C#Winforms Designer调用基本属性而不是“新"属性? [英] C# Winforms Designer calling base property instead of 'new' one?

问题描述

我有一个继承自另一个类的类，该类具有非虚拟属性(控件").

I have a class that inherits from another class, who has a non-virtual property ("Controls").

由于我无法覆盖此属性，因此我将使用与我的属性相关联的'new'关键字.

Since I can't overwrite this property, Im using the 'new' keyword associated with my property.

在运行时，在正确的上下文中按需要调用此属性.

At runtime, this property is called as I want it to, in the correct context.

当我从设计器中打开表单时，设计器将调用base.Controls而不是"new"控件.

When I open my form from the designer, the designer calls the base.Controls instead of my 'new' control.

我是否缺少某些东西，或者这只是Winforms设计器中的错误行为?

Am I missing something, or is this just incorrect behavior in the winforms designer?

编辑，添加了有问题的代码以获取更多说明.我有以下课程:

Edit, added the code in question for more explanation. I have the following class:

public partial class BauerGroupBox : ComponentFactory.Krypton.Toolkit.KryptonGroupBox
   {
      public BauerGroupBox()
         : base()
      {
      }
      public new Control.ControlCollection Controls
      {
         get
         {
            MessageBox.Show("GOT THERE");
            return this.Panel.Controls;
         }
      }
   }

当我在Intialize组件中获得以下代码时:

When I get to the following code in my intializecomponent:

BauerGroupBox thisBox = new BauerGroupBox()
thisBox.Controls.Add(something)

当我在代码中添加新的'BauerGroupBox'时，它可以正常工作.但是，当我在设计器中打开代码时(即使在调试devenv时)，也不会显示消息框，也不会出现断点.

When I add a new 'BauerGroupBox' to my code, it works fine. However, when I open my code in the designer (even while using the debugging the devenv), the messagebox is NOT shown, and the breakpoint is NOT hit.

当我运行我的应用程序时，命中了断点.

When I run my app, the breakpoint is hit.

推荐答案

您遗漏了一些东西-您所描述的是正确的行为.

You're missing something - what you're describing is correct behaviour.

解决方法是在调用InitializeComponent()之后立即重新填充新的Controls属性.像这样:

The workaround is to re-populate your new Controls property right after the call to InitializeComponent(). Like so:

public MyForm()  {
    InitializeComponent();
    this.Controls.AddRange( base.Controls );
}

但是，为什么要尝试覆盖" Controls属性?您追求什么新的非标准行为?我相信还有更好的选择.

However, why are you trying to "override" the Controls property? What new, non-standard, behaviour are you after? I believe there is a better alternative.

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