C
C#•2mo ago
strikeouts27

I need help declaring an array of objects where the attributes of the properties are user inputted.

I have been tasked with creating an array of objects. The Application for my assignment says that I need to create a job array in which the user is prompted for details to fill out the form. A job number, a name of the business, the hours it takes for the job to be completed..... The first thing that I do is create a job class. 
        // Job Class 
        public class Job()
        {
            private int jobNumber = 0;
            private string customerName;
            private string businessName;
            private int jobHours;
            private double price;
            public int CreateJobNumber(int jobNumber)
            {
                this.jobNumber++;

                return jobNumber;
            }

                        public int jobNumber { get; set; }
            public string customerName { get; set; }
            public string businessName { get; set; }
            public int jobHours { get; set; }
            public double price { get; set; }
        // Job Class 
        public class Job()
        {
            private int jobNumber = 0;
            private string customerName;
            private string businessName;
            private int jobHours;
            private double price;
            public int CreateJobNumber(int jobNumber)
            {
                this.jobNumber++;

                return jobNumber;
            }

                        public int jobNumber { get; set; }
            public string customerName { get; set; }
            public string businessName { get; set; }
            public int jobHours { get; set; }
            public double price { get; set; }
Easy peasy, than I deciare the job object 
// job order array initialization 
jobOrders[] jobOrder = new jobOrder[4]; 
// job order array initialization 
jobOrders[] jobOrder = new jobOrder[4];
So I have to activate the class and create the objects. jobOrder[0] = new jobOrder; I say to myself what can I use to loop through this array and assign objects to each slot in the array. And when I do so I require the user to be prompted to input data. So my question is, do I use a for loop and prompt the user for each attribute and than somehow assign it to an object? Or do I use a constructor and make the object? I am a little lost because this requires user input. public CreateJob() { jobOrders[] jobOrder = new jobOrder[4]; for (int i = 0; i < jobOrders.Length; ++i) Console.WriteLine($"Enter job number {i}"); Console.WriteLine($"Enter customer name {customerName}"); jobOrders[i].customerName = Console.ReadLine(); } ``` Solution Output An example of the expected program is shown below: Enter job number 1 Enter customer name Bobbi Enter description Carpet Cleaning Enter estimated hours 4 Enter job number 2 Enter customer name Sarah Enter description Flooding Enter estimated hours 12 Enter job number 3 Enter customer name Taylor Enter description Flooring Enter estimated hours 12 Enter job number 4 Enter customer name Sam Enter description Gardening Enter estimated hours 6 Enter job number 5 Enter customer name Alex Enter description Renovations Enter estimated hours 60 Summary: RushJob 1 Bobbi Carpet Cleaning 4 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $330.00 RushJob 2 Sarah Flooding 12 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $690.00 RushJob 3 Taylor Flooring 12 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $690.00 RushJob 4 Sam Gardening 6 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $420.00 RushJob 5 Alex Renovations 60 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $2,850.00 Total for all jobs is $4,980.00
70 Replies
Angius
Angius•2mo ago
Got some errors in the code you posted, but I assume it's not the actual code. Just saying Yes, a loop would definitely be a good idea here Basically, for each slot, ask for a name, hours, price, then use those to create a new job instance and add it to the slot
Keswiik
Keswiik•2mo ago
Assuming that jobOrders class is what you're using, you can use an object initializer to create it with the values you want, like: 
new SomeClassName {
  SomeProperty = "your value here",
  . . .
}
new SomeClassName {
  SomeProperty = "your value here",
  . . .
}
you can also create the object first and set the values afterwards 
var job = new jobOrder();
job.WhateverProperty = "your value";
var job = new jobOrder();
job.WhateverProperty = "your value";
And this is a nitpick, but classes are normally named WithACapitalLetterLikeThis, same with properties.
Angius
Angius•2mo ago
Also known as PascalCase, instead of camelCase
strikeouts27
strikeouts27OP•2mo ago
this seems to be what my textbook is telling me to attempt so I will try it soley based on the fact the text book is teaching this method. my question to you is, I would have to create a method that first creates the object, than like @ZZZZZZZZZZZZZZZZZZZZZZZZZ was saying make a for loop and colelct properties and than assign it. Pascal case. Ok I will implement that now.
Keswiik
Keswiik•2mo ago
You don't need another method to create the object. C# lets you create objects like this if they have properties. You can do it directly in your for loop where you're gathering user input.
Angius
Angius•2mo ago
That said, making a separate method that handles the user input and creates and returns a job object could make the code a fair bit cleaner
strikeouts27
strikeouts27OP•2mo ago
public CreateJob() { jobOrders[] jobOrder = new jobOrder[4]; for (int i = 0; i < jobOrders.Length; ++i) Console.WriteLine($"Enter job number"); // TryParse needed intJobNumber = Console.ReadLine();
Console.WriteLine($"Enter customer name {customerName}"); jobOrders[i].customerName = Console.ReadLine(); } Like this? Would I capture the data in variables and than once that data is known in the scope of the method use those variables and the new operator to create the object and than return that object?
Angius
Angius•2mo ago
Something like that would work, yes
strikeouts27
strikeouts27OP•2mo ago
TIME TO CODE! 🙂 I'll let you know how it goes once I am done I'll post my solution for feedback.
Angius
Angius•2mo ago
:Ok:
strikeouts27
strikeouts27OP•2mo ago
@ded @ZZZZZZZZZZZZZZZZZZZZZZZZZ something like this? public CreateJob() { jobOrders[] jobOrder = new jobOrder[5]; double jobPrice = 45.00; for (int i = 0; i < jobOrders.Length; ++i) Console.WriteLine($"Enter job number "); string jobNum = Console.ReadLine(); // int jobNumber is created on the tryparse int.TryParse(jobNum, out int jobNum);
Console.WriteLine($"Enter customer name "); string cust = Console.ReadLine(); Console.WriteLine($"Enter description "); string desc = Console.ReadLine(); Console.WriteLine($"Enter estimated hours "); int.TryParse(Console.ReadLine(), out int jobHours); jobOrders[i] = new Job { jobNumber = jobNumber, customerName = cust, description = desc, jobHours = jobHours, jobPrice = price };
}
Keswiik
Keswiik•2mo ago
try it and see
strikeouts27
strikeouts27OP•2mo ago
It declared dmy project invalid and would not build. attempting troubleshooting. resolving errors.... still on it.
Angius
Angius•2mo ago
Take your time, there's no rush Or, if an error is particularly hard to solve, feel free to ask
strikeouts27
strikeouts27OP•2mo ago
What I am thinking so far..... I was taught to keep functions simple. So after much struggling I have the job function just return an object with Console.Write prompts and Console.Readline(). if the tryparse works out, than the value is stored. However, I need tdo fill an array with objects. so I need to initalize an object array. Probably in Main. 
using System;
using static System.Console;
using System.Globalization;

namespace JobDemo3
{
    class JobDemo3
    {
        static void Main()
        {
            // Write your code here
        var job = new Job().CreateJob();    // instance method version
            
        }

        // Job Class 
        public class Job
        {
            private int jobNumber = 0;
            private string customerName;
            private string description;
            private int jobHours;
            private double price;
            public int CreateJobNumber(int jobNumber)
            {
                this.jobNumber++;

                return jobNumber;
            }
            public int jobNumber { get; set; }
            public string customerName { get; set; }
            public string description { get; set; }
            public int jobHours { get; set; }
            public double price { get; set; }

            // I want to create an array that is empty and can hold different data types. 
            // I than want to create a series of prompts for the user to input the values into variables. 
            // I than want the array to have those values be assigned in the designated slots. 

            public Job CreateJob()
            {
                var job = new Job();

                Console.Write("Enter job number: ");
                if (int.TryParse(Console.ReadLine(), out int num)) job.jobNumber = num;

                Console.Write("Enter customer name: ");
                job.customerName = Console.ReadLine() ?? string.Empty;

                Console.Write("Enter description: ");
                job.description = Console.ReadLine() ?? string.Empty;

                Console.Write("Enter estimated hours: ");
                if (int.TryParse(Console.ReadLine(), out int hours)) job.jobHours = hours;

                Console.Write("Enter price: ");
                if (double.TryParse(Console.ReadLine(), NumberStyles.Any, CultureInfo.CurrentCulture, out double p)) job.price = p;

                return job;
            }

        }
        

        // RushJob Class 
        public class RushJob : Job
        {
            private double premiumFee = 150.00;


            // preimum calculation 
        }

    }
}
using System;
using static System.Console;
using System.Globalization;

namespace JobDemo3
{
    class JobDemo3
    {
        static void Main()
        {
            // Write your code here
        var job = new Job().CreateJob();    // instance method version
            
        }

        // Job Class 
        public class Job
        {
            private int jobNumber = 0;
            private string customerName;
            private string description;
            private int jobHours;
            private double price;
            public int CreateJobNumber(int jobNumber)
            {
                this.jobNumber++;

                return jobNumber;
            }
            public int jobNumber { get; set; }
            public string customerName { get; set; }
            public string description { get; set; }
            public int jobHours { get; set; }
            public double price { get; set; }

            // I want to create an array that is empty and can hold different data types. 
            // I than want to create a series of prompts for the user to input the values into variables. 
            // I than want the array to have those values be assigned in the designated slots. 

            public Job CreateJob()
            {
                var job = new Job();

                Console.Write("Enter job number: ");
                if (int.TryParse(Console.ReadLine(), out int num)) job.jobNumber = num;

                Console.Write("Enter customer name: ");
                job.customerName = Console.ReadLine() ?? string.Empty;

                Console.Write("Enter description: ");
                job.description = Console.ReadLine() ?? string.Empty;

                Console.Write("Enter estimated hours: ");
                if (int.TryParse(Console.ReadLine(), out int hours)) job.jobHours = hours;

                Console.Write("Enter price: ");
                if (double.TryParse(Console.ReadLine(), NumberStyles.Any, CultureInfo.CurrentCulture, out double p)) job.price = p;

                return job;
            }

        }
        

        // RushJob Class 
        public class RushJob : Job
        {
            private double premiumFee = 150.00;


            // preimum calculation 
        }

    }
}
Im going to take a walk. I am frustrated.d
Angius
Angius•2mo ago
Aside of some odd choices (Job class being nested in JobDemo3 class, CreateJob() not being static) this looks perfectly fine Now you just need to run the CreateJob() method in a loop It creates one job, you need multiple
strikeouts27
strikeouts27OP•2mo ago
On it. static void Main() { // Write your code here Job[] job = new Job[5]; var job = new Job().CreateJob(); // instance method version
}
Pobiega
Pobiega•2mo ago
Almost. You have the same variable name for your array and your single job, and that CreateJob method really should be static at this point so you dont need to create an instance of Job first.
strikeouts27
strikeouts27OP•2mo ago
@Pobiega
Here is where I am at now. I am under the impression that get set methods are utlized to access private members data without actually changing the private data. This protects the class from um, inexperienced programmers such as myself. Even so public get set methods are supposed to retrieve data. So why is it complaining about this? Error: CS1520: Method must have a return type. I have reimplemented the Job data type for now to satisfy return conditions. New error: C:\Users\Andrew\QuickAccess Groups\Programming_projects\DallasCollege\INEW-1340-1-ASP.NET Programming\ASPApp\JobDemo3App\JobDemo\JobDemo.cs(38,24): error CS0102: The type 'JobDemo3.Job' already contains a define Per copilots explanation The error means you declared the same member name twice in the same type. In your file you have both private fields and auto-properties with identical names (for example both private int jobNumber = 0; public int jobNumber { get; set; } C:\Users\Andrew\QuickAccess Groups\Programming_projects\DallasCollege\INEW-1340-1-ASP.NET Programming\ASP.NET_DallasCollege-main\CSharp-Intermediate-Dallas-College\Chapter10\10_3\JobDemo3App\JobDemo3App\JobDemo\JobDemo.cs(38,24): error CS0102: The type 'JobDemo3.Job' already contains a definition for 'jobNumber' 
using System;
using static System.Console;
using System.Globalization;

namespace JobDemo3
{
    class JobDemo3
    {
        static void Main()
        {
            // Write your code here
            Job[] jobs = new Job[5];

            for (int i = 0; i < jobs.Length; i++)
            {
                var newJob = new Job().CreateJob();
                jobs[i] = newJob;
            }
            


        }

        // Job Class 
        public class Job
        {
            private int jobNumber = 0;
            private string customerName;
            private string description;
            private int jobHours;
            private double price;
            public int CreateJobNumber(int jobNumber)
            {
                this.jobNumber++;

                return jobNumber;
            }
            public int jobNumber { get; set; }
            public string customerName { get; set; }
            public string description { get; set; }
            public int jobHours { get; set; }
            public double price { get; set; }

            // I want to create an array that is empty and can hold different data types. 
            // I than want to create a series of prompts for the user to input the values into variables. 
            // I than want the array to have those values be assigned in the designated slots. 

            public static CreateJob()
            {
                var job = new Job();

                Console.Write("Enter job number: ");
                if (int.TryParse(Console.ReadLine(), out int num)) job.jobNumber = num;

                Console.Write("Enter customer name: ");
                job.customerName = Console.ReadLine() ?? string.Empty;

                Console.Write("Enter description: ");
                job.description = Console.ReadLine() ?? string.Empty;

                Console.Write("Enter estimated hours: ");
                if (int.TryParse(Console.ReadLine(), out int hours)) job.jobHours = hours;

                Console.Write("Enter price: ");
                if (double.TryParse(Console.ReadLine(), NumberStyles.Any, CultureInfo.CurrentCulture, out double p)) job.price = p;

                return job;
            }

        }
        

        // RushJob Class 
        public class RushJob : Job
        {
            private double premiumFee = 150.00;


            // preimum calculation 
        }

    }
}
using System;
using static System.Console;
using System.Globalization;

namespace JobDemo3
{
    class JobDemo3
    {
        static void Main()
        {
            // Write your code here
            Job[] jobs = new Job[5];

            for (int i = 0; i < jobs.Length; i++)
            {
                var newJob = new Job().CreateJob();
                jobs[i] = newJob;
            }
            


        }

        // Job Class 
        public class Job
        {
            private int jobNumber = 0;
            private string customerName;
            private string description;
            private int jobHours;
            private double price;
            public int CreateJobNumber(int jobNumber)
            {
                this.jobNumber++;

                return jobNumber;
            }
            public int jobNumber { get; set; }
            public string customerName { get; set; }
            public string description { get; set; }
            public int jobHours { get; set; }
            public double price { get; set; }

            // I want to create an array that is empty and can hold different data types. 
            // I than want to create a series of prompts for the user to input the values into variables. 
            // I than want the array to have those values be assigned in the designated slots. 

            public static CreateJob()
            {
                var job = new Job();

                Console.Write("Enter job number: ");
                if (int.TryParse(Console.ReadLine(), out int num)) job.jobNumber = num;

                Console.Write("Enter customer name: ");
                job.customerName = Console.ReadLine() ?? string.Empty;

                Console.Write("Enter description: ");
                job.description = Console.ReadLine() ?? string.Empty;

                Console.Write("Enter estimated hours: ");
                if (int.TryParse(Console.ReadLine(), out int hours)) job.jobHours = hours;

                Console.Write("Enter price: ");
                if (double.TryParse(Console.ReadLine(), NumberStyles.Any, CultureInfo.CurrentCulture, out double p)) job.price = p;

                return job;
            }

        }
        

        // RushJob Class 
        public class RushJob : Job
        {
            private double premiumFee = 150.00;


            // preimum calculation 
        }

    }
}
My program is complaining about not being able to use the index for the for loop for the JobSummary method. 
using System;
using static System.Console;
using System.Globalization;

namespace JobDemo3
{
    class JobDemo3
    {
        static void Main()
        {
            // Write your code here
            Job[] jobs = new Job[5];

            for (int i = 0; i < jobs.Length; i++)
            {
                var newJob = new Job().CreateJob();
                jobs[i] = newJob;
            }
            


        }

        // Job Class 
        public class Job
        {
            private int jobNumber = 0;
            private string customerName;
            private string description;
            private int jobHours;
            private double price;
            public int CreateJobNumber(int jobNumber)
            {
                this.jobNumber++;

                return jobNumber;
            }
            public int JobNumber { get; set; }
            public string CustomerName { get; set; }
            public string Description { get; set; }
            public int JobHours { get; set; }
            public double Price { get; set; }

            // I want to create an array that is empty and can hold different data types. 
            // I than want to create a series of prompts for the user to input the values into variables. 
            // I than want the array to have those values be assigned in the designated slots. 

            public Job CreateJob()
            {
                var job = new Job();

                Console.Write("Enter job number: ");
                if (int.TryParse(Console.ReadLine(), out int num)) job.jobNumber = num;

                Console.Write("Enter customer name: ");
                job.customerName = Console.ReadLine() ?? string.Empty;

                Console.Write("Enter description: ");
                job.description = Console.ReadLine() ?? string.Empty;

                Console.Write("Enter estimated hours: ");
                if (int.TryParse(Console.ReadLine(), out int hours)) job.jobHours = hours;

                Console.Write("Enter price: ");
                if (double.TryParse(Console.ReadLine(), NumberStyles.Any, CultureInfo.CurrentCulture, out double p)) job.price = p;

                return job;
            }

            public double CalculateJobPrice(double JobHours, double Price)
            {
                double JobTotalCost = JobHours * Price;
                return JobTotalCost;
            }

            public string JobSummary(int JobHours, double Price, int index)
            {
                Console.WriteLine("Summary:");
                Console.WriteLine("\n");
                Console.WriteLine($"RushJob {JobSummary[index].JobSummary(i)} Bobbi Carpet Cleaning {JobHours} hours @{Price} per hour. Rush job adds {JobTotal}");
            }
        }
        

        // RushJob Class s
        public class RushJob : Job
        {
            private double premiumFee = 150.00;


            // preimum calculation 
        }

    }
}
using System;
using static System.Console;
using System.Globalization;

namespace JobDemo3
{
    class JobDemo3
    {
        static void Main()
        {
            // Write your code here
            Job[] jobs = new Job[5];

            for (int i = 0; i < jobs.Length; i++)
            {
                var newJob = new Job().CreateJob();
                jobs[i] = newJob;
            }
            


        }

        // Job Class 
        public class Job
        {
            private int jobNumber = 0;
            private string customerName;
            private string description;
            private int jobHours;
            private double price;
            public int CreateJobNumber(int jobNumber)
            {
                this.jobNumber++;

                return jobNumber;
            }
            public int JobNumber { get; set; }
            public string CustomerName { get; set; }
            public string Description { get; set; }
            public int JobHours { get; set; }
            public double Price { get; set; }

            // I want to create an array that is empty and can hold different data types. 
            // I than want to create a series of prompts for the user to input the values into variables. 
            // I than want the array to have those values be assigned in the designated slots. 

            public Job CreateJob()
            {
                var job = new Job();

                Console.Write("Enter job number: ");
                if (int.TryParse(Console.ReadLine(), out int num)) job.jobNumber = num;

                Console.Write("Enter customer name: ");
                job.customerName = Console.ReadLine() ?? string.Empty;

                Console.Write("Enter description: ");
                job.description = Console.ReadLine() ?? string.Empty;

                Console.Write("Enter estimated hours: ");
                if (int.TryParse(Console.ReadLine(), out int hours)) job.jobHours = hours;

                Console.Write("Enter price: ");
                if (double.TryParse(Console.ReadLine(), NumberStyles.Any, CultureInfo.CurrentCulture, out double p)) job.price = p;

                return job;
            }

            public double CalculateJobPrice(double JobHours, double Price)
            {
                double JobTotalCost = JobHours * Price;
                return JobTotalCost;
            }

            public string JobSummary(int JobHours, double Price, int index)
            {
                Console.WriteLine("Summary:");
                Console.WriteLine("\n");
                Console.WriteLine($"RushJob {JobSummary[index].JobSummary(i)} Bobbi Carpet Cleaning {JobHours} hours @{Price} per hour. Rush job adds {JobTotal}");
            }
        }
        

        // RushJob Class s
        public class RushJob : Job
        {
            private double premiumFee = 150.00;


            // preimum calculation 
        }

    }
}
Pobiega
Pobiega•2mo ago
Ok let's start with clearing up what a property is and does. a property is a class member that has the { get; set; } bit (note that you might see variations to this, like only a getter, private setter etc) now, these properties are backed by a private field - but that is hidden from you and not something to consider most of the time In fact, thats where { get; private set; } becomes very useful! that means you have a private setter, so your class can modify the value as much as it wants, while "everyone else" can only access the value via the getter so you dont need to declare your own backing field Thus, your code... 
private int jobNumber = 0;
public int JobNumber { get; set; }
private int jobNumber = 0;
public int JobNumber { get; set; }
doesnt actually connect these two values at all @strikeouts27
strikeouts27
strikeouts27OP•2mo ago
reading now....
Pobiega
Pobiega•2mo ago
yeah sorry was working, but I have a while now so feel free to ask and I'll "live" reply 🙂
strikeouts27
strikeouts27OP•2mo ago
using System; using static System.Console; using System.Globalization; namespace JobDemo3 { class JobDemo3 { static void Main() { // Write your code here Job[] jobs = new Job[5]; for (int i = 0; i < jobs.Length; i++) { var newJob = new Job().CreateJob(); jobs[i] = newJob; }
} // Job Class public class Job { private int jobNumber = 0; private string customerName; private string description; private int jobHours; private double price; public int CreateJobNumber(int jobNumber) { this.jobNumber++; return jobNumber; } public int JobNumber { get; set; } public string CustomerName { get; set; } public string Description { get; set; } public int JobHours { get; set; } public double Price { get; set; } // I want to create an array that is empty and can hold different data types. // I than want to create a series of prompts for the user to input the values into variables. // I than want the array to have those values be assigned in the designated slots. public Job CreateJob() { var job = new Job(); Console.Write("Enter job number: "); if (int.TryParse(Console.ReadLine(), out int num)) job.jobNumber = num; Console.Write("Enter customer name: "); job.customerName = Console.ReadLine() ?? string.Empty; Console.Write("Enter description: "); job.description = Console.ReadLine() ?? string.Empty; Console.Write("Enter estimated hours: "); if (int.TryParse(Console.ReadLine(), out int hours)) job.jobHours = hours; Console.Write("Enter price: "); if (double.TryParse(Console.ReadLine(), NumberStyles.Any, CultureInfo.CurrentCulture, out double p)) job.price = p; return job; } public double CalculateJobPrice(double JobHours, double Price) { double JobTotalCost = JobHours * Price; return JobTotalCost; } public string JobSummary(int JobHours, double Price, int index) { Console.WriteLine("Summary:"); Console.WriteLine("\n"); Console.WriteLine($"RushJob {JobSummary[index].JobSummary(i)} Bobbi Carpet Cleaning {JobHours} hours @{Price} per hour. Rush job adds {JobTotal}"); } }
// RushJob Class s public class RushJob : Job { private double premiumFee = 150.00; // preimum calculation } // CertifiedLetter Class // Child class of Job that adds a tracking number property public class CertifiedLetter : Job { // Auto-implemented nullable property to hold the tracking number public string? TrackingNumber { get; set; } } } } here is the code as it stands currently one sec
Pobiega
Pobiega•2mo ago
$code
MODiX
MODiX•2mo ago
To post C# code type the following: ```cs // code here ``` Get an example by typing $codegif in chat For longer snippets, use: https://paste.mod.gg/
Pobiega
Pobiega•2mo ago
please use this so its easier to read
strikeouts27
strikeouts27OP•2mo ago
That is a game changer! 🙂 
using System;
using static System.Console;
using System.Globalization;

namespace JobDemo3
{
    class JobDemo3
    {
        static void Main()
        {
            // Write your code here
        

            
        }

        // Job Class 
        public class Job()
        {
            private int jobNumber = 0;
            private string customerName;
            private string businessName;
            private int jobHours;
            private double price;
            public int CreateJobNumber(int jobNumber)
            {
                this.jobNumber++;

                return jobNumber;
            }
            public int jobNumber { get; set; }
            public string customerName { get; set; }
            public string businessName { get; set; }
            public int jobHours { get; set; }
            public double price { get; set; }

            // I want to create an array that is empty and can hold different data types. 
            // I than want to create a series of prompts for the user to input the values into variables. 
            // I than want the array to have those values be assigned in the designated slots. 

            public ValidateJobNumber(int jobNumber)
            {
                // needs to continue to run until the dumbass gets it right. 
                // console.readline takes in strings. 
                // look into keywords that C# uses. 

                while (true)

                {
                    Console.WriteLine("Enter job number");
                    Console.ReadLine(); 
                    
                }

            }
            
            jobOrders[] jobOrder = new jobOrder[4]; 
            public CreateJob()
            {

                for (int i = 0; i < jobOrders.Length; ++i)
                    Console.WriteLine("Enter job number:");
                jobOrders[i].jobNumber = Console.ReadLine(); 
                    
                    jobOrders[i].customerName = Console.ReadLine(); 

            }

        }
        

        // RushJob Class 
        public class RushJob : Job
        {
            private double premiumFee = 150.00;


            // preimum calculation 
        }

    }
}
using System;
using static System.Console;
using System.Globalization;

namespace JobDemo3
{
    class JobDemo3
    {
        static void Main()
        {
            // Write your code here
        

            
        }

        // Job Class 
        public class Job()
        {
            private int jobNumber = 0;
            private string customerName;
            private string businessName;
            private int jobHours;
            private double price;
            public int CreateJobNumber(int jobNumber)
            {
                this.jobNumber++;

                return jobNumber;
            }
            public int jobNumber { get; set; }
            public string customerName { get; set; }
            public string businessName { get; set; }
            public int jobHours { get; set; }
            public double price { get; set; }

            // I want to create an array that is empty and can hold different data types. 
            // I than want to create a series of prompts for the user to input the values into variables. 
            // I than want the array to have those values be assigned in the designated slots. 

            public ValidateJobNumber(int jobNumber)
            {
                // needs to continue to run until the dumbass gets it right. 
                // console.readline takes in strings. 
                // look into keywords that C# uses. 

                while (true)

                {
                    Console.WriteLine("Enter job number");
                    Console.ReadLine(); 
                    
                }

            }
            
            jobOrders[] jobOrder = new jobOrder[4]; 
            public CreateJob()
            {

                for (int i = 0; i < jobOrders.Length; ++i)
                    Console.WriteLine("Enter job number:");
                jobOrders[i].jobNumber = Console.ReadLine(); 
                    
                    jobOrders[i].customerName = Console.ReadLine(); 

            }

        }
        

        // RushJob Class 
        public class RushJob : Job
        {
            private double premiumFee = 150.00;


            // preimum calculation 
        }

    }
}
Pobiega
Pobiega•2mo ago
okay, so now you have compilation errors about duplicate members yes? 
private int jobNumber = 0;
public int jobNumber { get; set; }
private int jobNumber = 0;
public int jobNumber { get; set; }
these conflict
strikeouts27
strikeouts27OP•2mo ago
so your saying they cannot be named the same.
Pobiega
Pobiega•2mo ago
Well thats true, but thats not my main point You don't need both Pick one. Most likely the property and maybe change it to be public int JobNumber { get; private set; }
strikeouts27
strikeouts27OP•2mo ago
Um so get; set; gets the values and retrieves them, without properties how will my code get past the private lock?
Pobiega
Pobiega•2mo ago
it wont so thats why you probably want to use the property 
private int jobNumber = 0; // this is a _FIELD_
public int JobNumber { get; set; } // this is a _PROPERTY_ with a PUBLIC GETTER AND SETTER
private int jobNumber = 0; // this is a _FIELD_
public int JobNumber { get; set; } // this is a _PROPERTY_ with a PUBLIC GETTER AND SETTER
strikeouts27
strikeouts27OP•2mo ago
If I do not set a field value, than the class is incapable of holding that value correct?
Pobiega
Pobiega•2mo ago
no properties have backing fields they are automatic
strikeouts27
strikeouts27OP•2mo ago
backing fields are the targets of the get set right? they grab the fields of the class? Or am I mistaken.
Pobiega
Pobiega•2mo ago
it makes its own hidden field
strikeouts27
strikeouts27OP•2mo ago
oh cool okay reattempting 
Couldn't find a project to run. Ensure a project exists in C:\Users\Andrew\QuickAccess Groups\Programming_projects\DallasCollege\INEW-1340-1-ASP.NET Programming\ASP.NET_DallasCollege-main\CSharp-Intermediate-Dallas-College\Chapter10\10_3, or pass the path to the project using --project.
Couldn't find a project to run. Ensure a project exists in C:\Users\Andrew\QuickAccess Groups\Programming_projects\DallasCollege\INEW-1340-1-ASP.NET Programming\ASP.NET_DallasCollege-main\CSharp-Intermediate-Dallas-College\Chapter10\10_3, or pass the path to the project using --project.
Pobiega
Pobiega•2mo ago
um
strikeouts27
strikeouts27OP•2mo ago
-___- one sec
Pobiega
Pobiega•2mo ago
sounds like you moved your csproj file? 😄 I found a blurb I wanted to show you: $propvsfield
MODiX
MODiX•2mo ago
Why use properties over a public field? - Properties can individually specify access modifiers for get and set - With Visual Studio, you can type prop, press tab and it will auto complete for you - XAML requires properties for bindings - Many APIs don't handle public fields by default, such as json serialization - Field exposure is really only done in readonly structs - Using properties allows for future changes to the getter or setter without breaking your API/external programs (binary compatibility) Example of an auto property:
class Example
{
    public string Name { get; set; }
    public int Age { get; set; }
}
class Example
{
    public string Name { get; set; }
    public int Age { get; set; }
}
Example of a property with backing field:
class Example
{
    private string _name;
    public string Name
    {
        get { return _name; }
        set { _name = value; }
    }

    private int _age;
    public int Age
    {
        get { return _age; }
        set { _age = value; }
    }
}
class Example
{
    private string _name;
    public string Name
    {
        get { return _name; }
        set { _name = value; }
    }

    private int _age;
    public int Age
    {
        get { return _age; }
        set { _age = value; }
    }
}
Pobiega
Pobiega•2mo ago
here you have an example of an auto property and a manually implemented backing field they are functionally the same, but obviously the auto one is much cleaner so we mostly only use that
strikeouts27
strikeouts27OP•2mo ago
so the get set can act as a field and as its own value. its a field with a protection on it
Pobiega
Pobiega•2mo ago
kinda a property is actually 2 methods and a field, all in one the getter, the setter, and the backing field
strikeouts27
strikeouts27OP•2mo ago
Reviewing if the get set has a backing field that stores the value, than what is the purpose of getting and setting it?Is that for other methods to grab that value without influencing the backing field?
Pobiega
Pobiega•2mo ago
encapsulation and/or modifiability you can change what a getter or setter does and doing so wouldnt require a change in other classes that use your property
strikeouts27
strikeouts27OP•2mo ago
ok one more thing 
C:\Users\Andrew\QuickAccess 

Groups\Programming_projects\DallasCollege\INEW-1340-1-ASP.NET Programming\ASP.NET_DallasCollege-main\CSharp-Intermediate-Dallas-College\Chapter10\10_3\JobDemo3App\JobDemo.cs(34,22): error CS1061: 'JobDemo3.Job' does not contain a definition for 'jobNumber' and no accessible extension method 'jobNumber' accepting a first argument of type 'JobDemo3.Job' could be found (are you missing a using directive or an assembly reference?)
C:\Users\Andrew\QuickAccess 

Groups\Programming_projects\DallasCollege\INEW-1340-1-ASP.NET Programming\ASP.NET_DallasCollege-main\CSharp-Intermediate-Dallas-College\Chapter10\10_3\JobDemo3App\JobDemo.cs(34,22): error CS1061: 'JobDemo3.Job' does not contain a definition for 'jobNumber' and no accessible extension method 'jobNumber' accepting a first argument of type 'JobDemo3.Job' could be found (are you missing a using directive or an assembly reference?)
Pobiega
Pobiega•2mo ago
you're still refering to the lowerCased jobNumber somewhere
strikeouts27
strikeouts27OP•2mo ago
using System;
using static System.Console;
using System.Globalization;

namespace JobDemo3
{
    class JobDemo3
    {
        static void Main()
        {
            // Write your code here
            Job[] jobs = new Job[5];

            for (int i = 0; i < jobs.Length; i++)
            {
                var newJob = new Job().CreateJob();
                jobs[i] = newJob;
            }
            


        }

        // Job Class 
        public class Job
        {
            
            private string customerName;
            private string description;
            private int jobHours;
            private double price;
            public int CreateJobNumber(int jobNumber)
            {
                this.jobNumber++;

                return jobNumber;
            }
            public int JobNumber { get; set; }
            public string CustomerName { get; set; }
            public string Description { get; set; }
            public int JobHours { get; set; }
            public double Price { get; set; }

            // I want to create an array that is empty and can hold different data types. 
            // I than want to create a series of prompts for the user to input the values into variables. 
            // I than want the array to have those values be assigned in the designated slots. 

            public Job CreateJob()
            {
                var job = new Job();

                Console.Write("Enter job number: ");
                if (int.TryParse(Console.ReadLine(), out int num)) job.jobNumber = num;

                Console.Write("Enter customer name: ");
                job.customerName = Console.ReadLine() ?? string.Empty;

                Console.Write("Enter description: ");
                job.description = Console.ReadLine() ?? string.Empty;

                Console.Write("Enter estimated hours: ");
                if (int.TryParse(Console.ReadLine(), out int hours)) job.jobHours = hours;

                Console.Write("Enter price: ");
                if (double.TryParse(Console.ReadLine(), NumberStyles.Any, CultureInfo.CurrentCulture, out double p)) job.price = p;

                return job;
            }

            public double CalculateJobPrice(double JobHours, double Price)
            {
                double JobTotalCost = JobHours * Price;
                return JobTotalCost;
            }

            public string JobSummary(int JobHours, double Price, int index)
            {
                Console.WriteLine("Summary:");
                Console.WriteLine("\n");
                Console.WriteLine($"RushJob {JobSummary[index].JobSummary(i)} Bobbi Carpet Cleaning {JobHours} hours @{Price} per hour. Rush job adds {JobTotal}");
            }
        }
        

        // RushJob Class s
        public class RushJob : Job
        {
            private double premiumFee = 150.00;


            // preimum calculation 
        }

        // CertifiedLetter Class
        // Child class of Job that adds a tracking number property
        public class CertifiedLetter : Job
        {
            // Auto-implemented nullable property to hold the tracking number
            public string? TrackingNumber { get; set; }
        }

    }
}
using System;
using static System.Console;
using System.Globalization;

namespace JobDemo3
{
    class JobDemo3
    {
        static void Main()
        {
            // Write your code here
            Job[] jobs = new Job[5];

            for (int i = 0; i < jobs.Length; i++)
            {
                var newJob = new Job().CreateJob();
                jobs[i] = newJob;
            }
            


        }

        // Job Class 
        public class Job
        {
            
            private string customerName;
            private string description;
            private int jobHours;
            private double price;
            public int CreateJobNumber(int jobNumber)
            {
                this.jobNumber++;

                return jobNumber;
            }
            public int JobNumber { get; set; }
            public string CustomerName { get; set; }
            public string Description { get; set; }
            public int JobHours { get; set; }
            public double Price { get; set; }

            // I want to create an array that is empty and can hold different data types. 
            // I than want to create a series of prompts for the user to input the values into variables. 
            // I than want the array to have those values be assigned in the designated slots. 

            public Job CreateJob()
            {
                var job = new Job();

                Console.Write("Enter job number: ");
                if (int.TryParse(Console.ReadLine(), out int num)) job.jobNumber = num;

                Console.Write("Enter customer name: ");
                job.customerName = Console.ReadLine() ?? string.Empty;

                Console.Write("Enter description: ");
                job.description = Console.ReadLine() ?? string.Empty;

                Console.Write("Enter estimated hours: ");
                if (int.TryParse(Console.ReadLine(), out int hours)) job.jobHours = hours;

                Console.Write("Enter price: ");
                if (double.TryParse(Console.ReadLine(), NumberStyles.Any, CultureInfo.CurrentCulture, out double p)) job.price = p;

                return job;
            }

            public double CalculateJobPrice(double JobHours, double Price)
            {
                double JobTotalCost = JobHours * Price;
                return JobTotalCost;
            }

            public string JobSummary(int JobHours, double Price, int index)
            {
                Console.WriteLine("Summary:");
                Console.WriteLine("\n");
                Console.WriteLine($"RushJob {JobSummary[index].JobSummary(i)} Bobbi Carpet Cleaning {JobHours} hours @{Price} per hour. Rush job adds {JobTotal}");
            }
        }
        

        // RushJob Class s
        public class RushJob : Job
        {
            private double premiumFee = 150.00;


            // preimum calculation 
        }

        // CertifiedLetter Class
        // Child class of Job that adds a tracking number property
        public class CertifiedLetter : Job
        {
            // Auto-implemented nullable property to hold the tracking number
            public string? TrackingNumber { get; set; }
        }

    }
}
one sec i will find it and change it
Pobiega
Pobiega•2mo ago
theres a few of em also, Im very confused about CreateJobNumber
strikeouts27
strikeouts27OP•2mo ago
The programs requirements force me to verify that there are no repeat job numbers.
Pobiega
Pobiega•2mo ago
its public, it takes a number in, it mutates the member field, it then returns the same number you passed in?
MODiX
MODiX•2mo ago
Pobiega
REPL Result: Success
var person = new Person(new DateTime(2000, 01, 01));
Console.WriteLine($"Person is {person.YearsOld} years old.");

public class Person
{
    public DateTime Birthday { get; }

    public Person(DateTime birthday)
    {
        Birthday = birthday;
    }
    
    public int YearsOld
    {
        get { return DateTime.Now.Year - Birthday.Year; }
    }
}
var person = new Person(new DateTime(2000, 01, 01));
Console.WriteLine($"Person is {person.YearsOld} years old.");

public class Person
{
    public DateTime Birthday { get; }

    public Person(DateTime birthday)
    {
        Birthday = birthday;
    }
    
    public int YearsOld
    {
        get { return DateTime.Now.Year - Birthday.Year; }
    }
}
Console Output
Person is 25 years old.
Person is 25 years old.
Compile: 529.408ms | Execution: 50.198ms | React with ❌ to remove this embed.
Pobiega
Pobiega•2mo ago
example of a computational getter
strikeouts27
strikeouts27OP•2mo ago
Enter job number 1
Enter customer name Bobbi
Enter description Carpet Cleaning
Enter estimated hours 4
Enter job number 2
Enter customer name Sarah
Enter description Flooding
Enter estimated hours 12
Enter job number 3
Enter customer name Taylor
Enter description Flooring
Enter estimated hours 12
Enter job number 4
Enter customer name Sam
Enter description Gardening
Enter estimated hours 6
Enter job number 5
Enter customer name Alex
Enter description Renovations
Enter estimated hours 60

Summary:

RushJob 1 Bobbi Carpet Cleaning 4 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $330.00
RushJob 2 Sarah Flooding 12 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $690.00
RushJob 3 Taylor Flooring 12 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $690.00
RushJob 4 Sam Gardening 6 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $420.00
RushJob 5 Alex Renovations 60 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $2,850.00

Total for all jobs is $4,980.00
Enter job number 1
Enter customer name Bobbi
Enter description Carpet Cleaning
Enter estimated hours 4
Enter job number 2
Enter customer name Sarah
Enter description Flooding
Enter estimated hours 12
Enter job number 3
Enter customer name Taylor
Enter description Flooring
Enter estimated hours 12
Enter job number 4
Enter customer name Sam
Enter description Gardening
Enter estimated hours 6
Enter job number 5
Enter customer name Alex
Enter description Renovations
Enter estimated hours 60

Summary:

RushJob 1 Bobbi Carpet Cleaning 4 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $330.00
RushJob 2 Sarah Flooding 12 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $690.00
RushJob 3 Taylor Flooring 12 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $690.00
RushJob 4 Sam Gardening 6 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $420.00
RushJob 5 Alex Renovations 60 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $2,850.00

Total for all jobs is $4,980.00
Pobiega
Pobiega•2mo ago
is that the expected output?
strikeouts27
strikeouts27OP•2mo ago
Correct As you can see, the job number, is quite straight forward! So if it increments by one. it can never be the same. Unless some doofus messes with it.
Pobiega
Pobiega•2mo ago
hm okay Any particular reason you are entering the job number, instead of just letting the computer keep track of a counter?
strikeouts27
strikeouts27OP•2mo ago
Hmmmmm I am inexperienced and trying to understand you. One moment. Ah now I get what you are saying. Well the requirements show an output where one must enter the job number.
Pobiega
Pobiega•2mo ago
fair enough deffo gets problematic having to verify that as you go thou, but its doable. it means the job creator needs to have access to all previously created jobs
strikeouts27
strikeouts27OP•2mo ago
cs 
/workspaces/9780357429235_farrell-c-sharp-aaba885a-f662-4800-a980-c6b80f6b520c/chapter10/ex03C/student/JobDemo3.cs(80,34): error CS0021: Cannot apply indexing with [] to an expression of type 'method group' [/workspaces/9780357429235_farrell-c-sharp-aaba885a-f662-4800-a980-c6b80f6b520c/chapter10/ex03C/student/JobDemo3.csproj]
/workspaces/9780357429235_farrell-c-sharp-aaba885a-f662-4800-a980-c6b80
cs 
/workspaces/9780357429235_farrell-c-sharp-aaba885a-f662-4800-a980-c6b80f6b520c/chapter10/ex03C/student/JobDemo3.cs(80,34): error CS0021: Cannot apply indexing with [] to an expression of type 'method group' [/workspaces/9780357429235_farrell-c-sharp-aaba885a-f662-4800-a980-c6b80f6b520c/chapter10/ex03C/student/JobDemo3.csproj]
/workspaces/9780357429235_farrell-c-sharp-aaba885a-f662-4800-a980-c6b80
This one I think i understand. and this is what I have been stuck on. 
public string JobSummary(int JobHours, double Price, int index)
            {
Console.WriteLine($"RushJob {JobSummary[index].JobSummary(i)} Bobbi Carpet Cleaning {JobHours} hours @{Price} per hour. Rush job adds {JobTotal}");
            }
}
public string JobSummary(int JobHours, double Price, int index)
            {
Console.WriteLine($"RushJob {JobSummary[index].JobSummary(i)} Bobbi Carpet Cleaning {JobHours} hours @{Price} per hour. Rush job adds {JobTotal}");
            }
}
doggonit that is hard to read. one sec
Pobiega
Pobiega•2mo ago
Well, what are you trying to index there? JobSummary is a method you can't index methods
strikeouts27
strikeouts27OP•2mo ago
Correct, wishful thinking. I am so close to the goal line, but this error frustrates me. I need it to show an index number. I have considered dusing a for loop to increment by one just as the job is incremented. So when the object is created and the job number is incremented by one, it is stuck in that zone. But i can mimic the job number in job summary if I know that it is incremented by one. By that I mean, if job object one is created, I could in a separate method call a for loop and increment by one?
Pobiega
Pobiega•2mo ago
start from the data where is your job data right now? that will be your source
strikeouts27
strikeouts27OP•2mo ago
my job data is imaginary. It is not based on real world data. I can create the objects and provide the data. it just needs to mimic the job output Enter job number 1 Enter customer name Bobbi Enter description Carpet Cleaning Enter estimated hours 4 Enter job number 2 Enter customer name Sarah Enter description Flooding Enter estimated hours 12 Enter job number 3 Enter customer name Taylor Enter description Flooring Enter estimated hours 12 Enter job number 4 Enter customer name Sam Enter description Gardening Enter estimated hours 6 Enter job number 5 Enter customer name Alex Enter description Renovations Enter estimated hours 60 Summary: RushJob 1 Bobbi Carpet Cleaning 4 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $330.00 RushJob 2 Sarah Flooding 12 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $690.00 RushJob 3 Taylor Flooring 12 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $690.00 RushJob 4 Sam Gardening 6 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $420.00 RushJob 5 Alex Renovations 60 hours @$45.00 per hour. Rush job adds 150 premium. Total price is $2,850.00 Total for all jobs is $4,980.00
Pobiega
Pobiega•2mo ago
No I mean in the code you cant print the jobs until after you have created them, and when creating them, you store them somewhere start there
strikeouts27
strikeouts27OP•2mo ago
so utlize object instantiation, create the 5 jobs, store them in the array, than maybe uh.... call the job summary() method?
Pobiega
Pobiega•2mo ago
something like that yeah
strikeouts27
strikeouts27OP•2mo ago
        {
            // Write your code here
            Job[] jobs = new Job[5];

            for (int i = 0; i < jobs.Length; i++)
            {
                var newJob = new Job().CreateJob();
                jobs[i] = newJob;
            }
            
        {
            // Write your code here
            Job[] jobs = new Job[5];

            for (int i = 0; i < jobs.Length; i++)
            {
                var newJob = new Job().CreateJob();
                jobs[i] = newJob;
            }
This would initalize the objects You have given me a great deal of insight, and I am grateful to you. I will keep fighting this problem. I didn't mean to keep you on this but I really needed help. Thank you @Pobiega
Pobiega
Pobiega•2mo ago
so after that loop, you'll have your jobs array thats where your data is now so make JobSummary take in that array as part of its inputs 
How many jobs do you want to create?3
Enter job number: 1
Enter customer name: Steve
Enter description: Gardening
Enter estimated hours: 12
Enter job number: 1
Invalid value, try again.
Enter job number: 2
Enter customer name: Monkey
Enter description: asd
Enter estimated hours: 1  
Enter job number: 3
Enter customer name: fa
Enter description: asd
Enter estimated hours: 51
Summary:
Job { JobNumber = 1, Customer = Steve, Description = Gardening, EstimatedHours = 12 }
Job { JobNumber = 2, Customer = Monkey, Description = asd, EstimatedHours = 1 }
Job { JobNumber = 3, Customer = fa, Description = asd, EstimatedHours = 51 }

Process finished with exit code 0.
How many jobs do you want to create?3
Enter job number: 1
Enter customer name: Steve
Enter description: Gardening
Enter estimated hours: 12
Enter job number: 1
Invalid value, try again.
Enter job number: 2
Enter customer name: Monkey
Enter description: asd
Enter estimated hours: 1  
Enter job number: 3
Enter customer name: fa
Enter description: asd
Enter estimated hours: 51
Summary:
Job { JobNumber = 1, Customer = Steve, Description = Gardening, EstimatedHours = 12 }
Job { JobNumber = 2, Customer = Monkey, Description = asd, EstimatedHours = 1 }
Job { JobNumber = 3, Customer = fa, Description = asd, EstimatedHours = 51 }

Process finished with exit code 0.
something like this?

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