❔ Only one compilation unit can have top-level statements. [C# start]

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢 · 2023-05-14T11:20:12.083Z

using VS code, just created new file apart from program.cs and got this error

C

cap5lut•5/14/23, 11:22 AM

then, dont use top level statements there, but normal classes

C

cap5lut•5/14/23, 11:23 AM

public class AClassInYourOtherFile
{
  public static void DoSomething()
  {
    // your code for this method
  }
}

public class AClassInYourOtherFile
{
  public static void DoSomething()
  {
    // your code for this method
  }
}

public class AClassInYourOtherFile
{
  public static void DoSomething()
  {
    // your code for this method
  }
}

public class AClassInYourOtherFile
{
  public static void DoSomething()
  {
    // your code for this method
  }
}

for example

C

cap5lut•5/14/23, 11:26 AM

if ur

Program.cs

Program.cs

Program.cs

Program.cs looks like this for example:

using System;

Console.WriteLine("hello world");

using System;

Console.WriteLine("hello world");

using System;

Console.WriteLine("hello world");

using System;

Console.WriteLine("hello world");

its nothing different than that it automatically will be converted to

using System;

public class Program
{
  public static void Main(string[] args)
  {
    Console.WriteLine("hello world");
  }
}

using System;

public class Program
{
  public static void Main(string[] args)
  {
    Console.WriteLine("hello world");
  }
}

using System;

public class Program
{
  public static void Main(string[] args)
  {
    Console.WriteLine("hello world");
  }
}

using System;

public class Program
{
  public static void Main(string[] args)
  {
    Console.WriteLine("hello world");
  }
}

in the end. top level statements are to get rid of that boiler plate code

C

cap5lut•5/14/23, 11:27 AM

also for beginners i would recommend using Visual Studio, not Visual Studio Code if possible

�

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢OP•5/14/23, 11:31 AM

im so confused, sorry Im so new to C#

�

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢OP•5/14/23, 11:31 AM

my code doesnt have "using system:"

T

Thinker•5/14/23, 11:32 AM

In every C# project, there is one file that will be run at the start of your program - Program.cs.

T

Thinker•5/14/23, 11:32 AM

You cannot have multiple of these files, there can only be one.

�

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢OP•5/14/23, 11:32 AM

ok

�

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢OP•5/14/23, 11:32 AM

so what if i want to write a new code but want to keep my old one

T

Thinker•5/14/23, 11:32 AM

You create a new project

�

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢OP•5/14/23, 11:33 AM

how do u do that on vs code?

T

Thinker•5/14/23, 11:33 AM

Same way you created your current project

T

Thinker•5/14/23, 11:33 AM

dotnet new console

dotnet new console

dotnet new console

dotnet new console presumably

�

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢OP•5/14/23, 11:33 AM

ok

�

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢OP•5/14/23, 11:33 AM

but when i did that it just runs my original project, not my new one

�

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢OP•5/14/23, 11:35 AM

@thinker227 what should i do?

�

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢OP•5/14/23, 11:35 AM

@cap5lut ???

T

Thinker•5/14/23, 11:36 AM

Go into your new project in the terminal and run

dotnet run

dotnet run

dotnet run

dotnet run

�

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢OP•5/14/23, 11:36 AM

what if i want to run it in terminal?

�

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢OP•5/14/23, 11:36 AM

does that not work?

T

Thinker•5/14/23, 11:37 AM

It does

�

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢OP•5/14/23, 11:37 AM

in terminal on my mac as in externally?

�

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢OP•5/14/23, 11:40 AM

whatever, ill just run in app

T

Thinker•5/14/23, 11:43 AM

Well, any terminal will work

�

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢OP•5/14/23, 11:43 AM

ok its fine i think I was running it wrong

�

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢OP•5/14/23, 11:44 AM

can i ask u if I have any more questions as I am very new to C# and coding in generall and you seem like you know what your doing

T

Thinker•5/14/23, 11:45 AM

You can always ask in #help or #help-0 catlurk

�

𝔎𝔦𝔰𝔰_𝔐𝔶_𝔄𝔵𝔢OP•5/14/23, 11:46 AM

ok

A

Accord•5/15/23, 12:18 PM

Was this issue resolved? If so, run

/close

/close

otherwise I will mark this as stale and this post will be archived until there is new activity.

❔ Only one compilation unit can have top-level statements. [C# start]

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