C#•10mo ago

❔ ✅ CS0116 [SOLVED]

and CS1061: 'Form1' does not contain a definition for 'button1_Click' and no accessible extension method 'button1_Click' accepting a first argument of type 'Form1' could be found (are you missing a using directive or a assembly reference?) I'm just making a installer and i'm a C# beginner so I don't know how to fix this

22 Replies

Angius•10mo ago

Methods go into classes Classes go into namespaces Seems like your titular error is because some of your methods have been placed in a namespace

Angius•10mo ago

This is sus in particular

Angius•10mo ago

Make sure you format your code properly so you can see where each class and method starts and ends $prettycode

MODiX•10mo ago

To format your code in Visual Studio, Visual Studio Code, Rider, use the following shortcut:

Visual Studio        CTRL  + K     + D
Rider / Resharper    CTRL  + ALT   + L
Visual Studio Code   SHIFT + ALT   + F

Visual Studio        CTRL  + K     + D
Rider / Resharper    CTRL  + ALT   + L
Visual Studio Code   SHIFT + ALT   + F

NOTE: the first key must be held while doing it. https://cdn.discordapp.com/attachments/569261465463160900/899513918567890944/2021-10-18_01-26-35.gif

br0kE•10mo ago

I restarted VS 2019 and Main.Designer.cs changed so whats a methof d

Angius•10mo ago

A function

br0kE•10mo ago

i just followed this tutorial then this happened https://www.youtube.com/watch?v=n5jDXRDg070

DM Velocity

YouTube

C# WinForm UI - Round Rect / Ellipse Button

This tutorial is to teach you how to make an ellipse button in C# without 3rd party app. #UIDesign #CSharp #Button For more videos please go to my channel: https://www.youtube.com/channel/UCCViFHnPq_IQV5eQTbjVu1A Music: https://www.youtube.com/watch?v=B7xai5u_tnk&list=RDMMcMg8KaMdDYo&index=2

br0kE•10mo ago

how do i know if the thing im looking at is a function

Angius•10mo ago

$structure

MODiX•10mo ago

namespace Namespace;

[Attribute]
public class Class
{
  public string PublicField;
  private bool _privateField;
  protected double protectedField;    

  public int PublicProperty { get; set; }

  public Class() {} // Constructor

  public void Method(int parameter)
  {
    var localVariable = parameter; 
  } 
}

namespace Namespace;

[Attribute]
public class Class
{
  public string PublicField;
  private bool _privateField;
  protected double protectedField;    

  public int PublicProperty { get; set; }

  public Class() {} // Constructor

  public void Method(int parameter)
  {
    var localVariable = parameter; 
  } 
}

For C# versions older than 10, see $StructureOld

Angius•10mo ago

Here's the basic structore of a C# file

br0kE•10mo ago

i dont understand 💀

Angius•10mo ago

Which part?

br0kE•10mo ago

$StructureOld i think i have an older version of C#

MODiX•10mo ago

namespace Namespace
{
  [Attribute]
  public class Class
  {
    public string PublicField;
    private bool _privateField;
    protected double protectedField;    

    public int PublicProperty { get; set; }

    public Class() {} // Constructor

    public void Method(int parameter)
    {
      var localVariable = parameter; 
    } 
  }
}

namespace Namespace
{
  [Attribute]
  public class Class
  {
    public string PublicField;
    private bool _privateField;
    protected double protectedField;    

    public int PublicProperty { get; set; }

    public Class() {} // Constructor

    public void Method(int parameter)
    {
      var localVariable = parameter; 
    } 
  }
}

For C# versions from 10 onwards, see $structure

br0kE•10mo ago

idfk man maybe both

Angius•10mo ago

This example shows most of what can be in a file, but not everything has to be there The stripped down version would be

namespace Namespace
{
    public class Class
    {
        public void Method()
        {

        }
    }
}

namespace Namespace
{
    public class Class
    {
        public void Method()
        {

        }
    }
}

So, in short, make sure that - Your class is within the namespaces braces ({}) or make sure the namespace is file-scoped, so ends with a semicolon (;) and doesn't have braces - All your methods are within the class's braces Prettyinfying your code will help you see whether or not everything is correct It's easier to spot the error when your code isn't

class Animal
{
public void Bark() {

    }
  }
}

class Animal
{
public void Bark() {

    }
  }
}

but

class Animal
{
    public void Bark() 
    {

    }
}
}

class Animal
{
    public void Bark() 
    {

    }
}
}

instead You immediately see you have one } too many

br0kE•10mo ago

well deleting that } solved the problem thanks cs0161 is also fixed

Denis•10mo ago

$close

MODiX•10mo ago

Use the /close command to mark a forum thread as answered

br0kE•10mo ago

didnt know there was a close command

Accord•10mo ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ ✅ CS0116 [SOLVED]