How to debug winform userControl in designer with dotnet 6?

Question

I want to know how to debug winform userControl in design time?

1. dotnet sdk version:6.0.403;
2. IDE:Visual Studio 2022 community 17.3.0;
3. as the document say,as fallow:
   

Answer 1

Hi @昌杰 王 , Welcome to Q&A.

From my testing, this document works fine for .Net 6.

Both my library files and project are .Net 6

My steps:

• Create a .Net 6 usercontrol library file and modify the design of UserControl1.
• Add the following code to the class: private string demoStringValue = null;
  [Browsable(true)]
  public string DemoString
  {
  get
  {
  return this.demoStringValue;
  }
  set
  {
  demoStringValue = value;
  }
  }
• Build library files.
• Add a breakpoint to the property.
• Modify the startup item of the project to the current project.

• Create a new .Net 6 winform project, add the library file to reference.
• Drag usercontrol1 into design and add a button.
• Add the following code to the button: private void button1_Click(object sender, EventArgs e)
  {
  userControl12.DemoString = (string)button1.Text;
  MessageBox.Show(userControl12.DemoString);
  }
• You can see it hit the breakpoint.

Best Regards,
Jiale

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Answer 2

Reference: https://learn.microsoft.com/en-us/dotnet/desktop/winforms/controls/walkthrough-debugging-custom-windows-forms-controls-at-design-time?view=netframeworkdesktop-4.8&viewFallbackFrom=netdesktop-6.0[walkthrough-debugging-custom-windows-forms-controls-at-design-time][1]