WinForm UserControl 的通用基类 [英] Generic base class for WinForm UserControl

问题描述

我为 WinForm UserControl 创建了一个通用基类:

I created a generic base class for a WinForm UserControl:

public partial class BaseUserControl<T> : UserControl
{
    public virtual void MyMethod<T>() 
    { 
        // some base stuff here 
    }
}

以及基于此的 UserControl:

And a UserControl based on that:

public partial class MyControl : BaseUserControl<SomeClass>
{
    public override void MyMethod<SomeClass>() 
    { 
        // some specific stuff here 
        base.MyMethod<SomeClass>();
    }
}

它工作正常，但不能在 VisualStudio 设计器中编辑 MyControl，因为它说它不能加载基类.我试图定义另一个非通用类 BaseUserControl，希望它能加载它，但这个技巧似乎不起作用.

It works fine, but MyControl cannot be edited in the VisualStudio Designer, because it says it cannot load the base class. I tried to define another class BaseUserControl, non generic, hoping it would load it, but the trick doesn't seem to work.

我已经有了一个解决方法:定义一个接口，IMyInterface，然后将我的控件创建为

I already have a workaround: define an interface, IMyInterface<T>, and then create my control as

public partial class MyControl : UserControl, IMyInterface<SomeClass>

但是我丢失了我的基本虚拟方法(没什么大不了的，但仍然......).

But I lose my base virtual methods (not a big deal, but still...).

有没有办法为 UserControl 创建一个通用基类，并且可以在 VisualStudio 设计器中对其进行编辑?

Is there a way to create a base generic class for a UserControl, with the possiblity to edit it in the VisualStudio Designer?

推荐答案

我们正在做同样的事情，我们通过首先专门化一个类并从专门化的类派生来解决这个问题.使用您示例中的代码，这意味着:

We're doing the same thing and we work around by specializing a class first and derive from the specialized class. Using the code from your example this means something like:

public partial class UserControl : UserControlDesignable 
{

...
}
public class UserControlDesignable : BaseUserControl<Someclass> { }

设计师有时仍然表现得很古怪 - 但大多数时候它是有效的.

The designer is still acting flaky sometimes - but most of the time it works.

这篇关于WinForm UserControl 的通用基类的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！