Using a base class with a type parameter for a User Control

Question

I have a user control and it does not seem to like me using a base class with a type parameter. Is there any way around this/am I missing something?

public partial class PopupSelector : PopupSelectionControl3<int>
{
    public PopupSelector()
    {
        InitializeComponent();
    }
}

... Plus the designer code ...

public class PopupSelectionControl3<TValue> : XtraUserControl
{
}

It doesn't have an error per se but it won't show me the form in the designer - it still builds and runs fine — William, Apr 26 '12 at 12:43
It says that the file cannot be displayed but it doesn't have any compile or run-time errors — William, Apr 26 '12 at 17:52

score 0 · Answer 1 · edited May 23 '17 at 10:34

0

The WinForms designer does not cope very well with generic UserControls.

bernhardrusch provides a workaround here

public partial class UserControl : UserControlDesignable  {  ... } 

public class UserControlDesignable : BaseUserControl<Someclass> { }

More detail on the workaround can be found here

edited May 23 '17 at 10:34

Community

1
1

answered Apr 26 '12 at 13:02

Laoujin

9,962
7
42
69

Using a base class with a type parameter for a User Control

1 Answers1