blocks|key|226977|text|你遗漏了一些东西--你描述的是正确的行为。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|226978|解决方法是在调用InitializeComponent()之后立即重新填充新的Controls属性。如下所示：|offset|length|style|CODE|226979|public+MyForm()++{
++++InitializeComponent();
++++this.Controls.AddRange(+base.Controls+);
}|code-block|syntax|javascript|226980|但是，为什么要“覆盖”Controls属性呢？你在追求什么新的、非标准的行为？我相信还有更好的选择。|226981|entityMap^0|0|8|L|13|8|0|0|B|8|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@$D|S|E|T|F|G]|$D|U|E|V|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|W|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|X|8|@$D|Y|E|Z|F|G]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|P|$]]

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

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

<pre><code>public MyForm() {
 InitializeComponent();
 this.Controls.AddRange( base.Controls );
}
</code></pre>

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

blocks|key|3338405|text|您误解了new关键字的工作原理。New不会覆盖该属性，它会隐藏该属性。如果你引用对象作为它的基元素，它仍然会调用基属性，而不是你的新属性。使用新版本的唯一方法是将其引用为新版本。即。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3338406|public+class+A+{
++++public+A1+{get;set;}
}

public+class+B+:+A+{
++++public+new+A1+{get;set;}
}

B+b+=+new+B();
A+a+=+b;

a.A1;+//+references+A.A1
b.A1;+//+references+B.A1|code-block|syntax|javascript|3338407|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You misunderstand how the new keyword works. New doesn't override the property, it hides it. If you reference the object as it's base element, it will still call the base property, not your new one. The only way to use the new one is to reference it as the new one. ie.

<pre><code>public class A {
 public A1 {get;set;}
}

public class B : A {
 public new A1 {get;set;}
}

B b = new B();
A a = b;

a.A1; // references A.A1
b.A1; // references B.A1
</code></pre>

blocks|key|3393578|text|我想我理解你的情况，所以让我来解释一下设计师在做什么：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3393579|首先，在运行时，您实际上是在运行BauerGroupBox控件的一个实例。(也就是说，您很可能是通过这个派生类型的引用来访问Controls属性的，即BauerGroupBox，正如@Mystere+Man正确地指出的那样，成员BauerGroupBox.Controls隐藏了继承的成员(无论它是在哪里最后定义的)+--它不会覆盖它。|offset|length|style|CODE|3393580|但问题是，在设计时，在BauerGroupBox控件的设计器中，您不是在“运行”+BauerGroupBox的实例，而是designing一个基于ComponentFactory.Krypton.Toolkit.KryptonGroupBox的原型，这实际上就是您正在“运行”的控件的类型。|3393581|我重复一遍，BauerGroupBox的设计者没有运行BauerGroupBox的实例，而是ComponentFactory.Krypton.Toolkit.KryptonGroupBox的实例。设计器中不存在BauerGroupBox，因为..你正在设计它！|3393582|现在，为了增加一点混淆(实际上没有，如果你仔细考虑一下，这一切都很简单)，你会看到，如果你转到任何其他控件的设计器，比如窗体，然后你拖放你的BauerGroupBox的一个实例，并在其中添加一些控件，你会看到你的消息框，是的，在这种情况下，就像在“运行时”的情况下，这意味着你实际上是在托管一个BauerGroupBox……但在这种情况下，您并不是在设计BauerGroupBox。|3393583|正如其他@Dai所提到的，如果您尝试做的是阻止人们向其添加控件，那么您应该遵循其他设计计划:例如，重写|3393584|protected+virtual+Control.ControlCollection+CreateControlsInstance();|code-block|syntax|javascript|3393585|方法。|3393586|entityMap^0|0|G|D|1Q|8|23|D|36|M|0|B|D|15|D|1O|9|21|1C|0|6|D|R|D|1A|1C|2X|D|0|1Y|D|43|D|4X|D|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@$D|10|E|11|F|G]|$D|12|E|13|F|G]|$D|14|E|15|F|G]|$D|16|E|17|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|18|8|@$D|19|E|1A|F|G]|$D|1B|E|1C|F|G]|$D|1D|E|1E|F|G]|$D|1F|E|1G|F|G]]|9|@]|A|$]]|$1|J|3|K|5|6|7|1H|8|@$D|1I|E|1J|F|G]|$D|1K|E|1L|F|G]|$D|1M|E|1N|F|G]|$D|1O|E|1P|F|G]]|9|@]|A|$]]|$1|L|3|M|5|6|7|1Q|8|@$D|1R|E|1S|F|G]|$D|1T|E|1U|F|G]|$D|1V|E|1W|F|G]]|9|@]|A|$]]|$1|N|3|O|5|6|7|1X|8|@]|9|@]|A|$]]|$1|P|3|Q|5|R|7|1Y|8|@]|9|@]|A|$S|T]]|$1|U|3|V|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|W|3|-4|5|6|7|20|8|@]|9|@]|A|$]]]|X|$]]

I think I understand your situation, so let me explain what the designer is doing:

First, at runtime, you are effectively running an instance of your <code>BauerGroupBox</code> control. (That said, it's also all likely that you are accessing the <code>Controls</code> property through a reference of this derived type, namely <code>BauerGroupBox</code>, and as @Mystere Man correctly argues, the member <code>BauerGroupBox.Controls</code> hides the inherited member (wherever it is last defined) -- it does not override it.

Bur the issue in question is that at design-time, in the designer of the <code>BauerGroupBox</code> control, you are NOT "running" an instance of <code>BauerGroupBox</code>, instead you are <code>designing</code> a prototype based on <code>ComponentFactory.Krypton.Toolkit.KryptonGroupBox</code> and that is effectively the type of the control you are "running".

I repeat, the designer of <code>BauerGroupBox</code> does not have an instance of <code>BauerGroupBox</code> running, but an instance of <code>ComponentFactory.Krypton.Toolkit.KryptonGroupBox</code>. No <code>BauerGroupBox</code> exists in the designer, because, well.. you are designing it!!!

NOW, to add a bit more confusion to that (none really, it's all very simple if you think a bit about it,) you will see that if you go to any other designer of any other control, say a form, and then you drag and drop an instance of your <code>BauerGroupBox</code>, and add some controls to it, you will your message box, and yes, in that case, just like in the "runtime" case, it means that you are effectively hosting a <code>BauerGroupBox</code>... but in this case, you are not designing <code>BauerGroupBox</code>.

As other @Dai mentioned, if what you're trying to do is to prevent people from adding controls to it, then you should follow other design plans: for example, override the 

<pre><code>protected virtual Control.ControlCollection CreateControlsInstance();
</code></pre>

method.

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

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

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

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

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

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

<pre><code>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;
 }
 }
 }
</code></pre>

When I get to the following code in my intializecomponent:

<pre><code>BauerGroupBox thisBox = new BauerGroupBox()
thisBox.Controls.Add(something)
</code></pre>

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.

When I run my app, the breakpoint is hit.

C# Winforms Designer calling base property instead of 'new' one?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个继承自另一个类的类，这个类有一个非虚拟属性(“控件”)。因为我不能覆盖这个属性，所以我使用了与我的属性相关的'new‘关键字。在运行时，这个属性按照我想要的方式在正确的上下文中调用。当我从设计器打开我的窗体时，设计器调用base.Controls而不是我的“新”控件。我是否遗漏了什么，或者这只是winforms...

问C# Winforms Designer调用基属性而不是“new”属性吗？
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问C# Winforms Designer调用基属性而不是“new”属性吗？EN