问题描述
我有一个基于一个面板自定义控制。这只是一个简单的面板3 DropDownLists。如果我添加一个 CompareValidator 我的WebForm和的ControlToValidate 属性设置为我定制控件的ID，我得到以下错误：
I have a custom control based on a Panel. It's merely a simple panel with 3 DropDownLists. If I add a CompareValidator to my WebForm and set the ControlToValidate property to the ID of my custom control I get the following error:
控制{0}由ControlToValidate属性引用{1}无法验证。
我明白为什么，在CompareValidator无法理智地验证对面板东西。那么，我需要添加到我的自定义控制，有可能使验证程序能够验证呢？
I understand why, the CompareValidator cannot sensibly validate anything against the Panel. So what do I need to add to my custom control to make it possible for a validator to be able to validate it?
我曾尝试添加文本属性来我面板，返回3 DropDownLists的Text属性的组合。没有结果。
I have tried adding a Text property to my Panel which returns a combination of the Text properties of the 3 DropDownLists. No avail.
我试图寻找某些接口（ ITextControl ）的可验证的控件（文本框）来实现，并把它们添加到我的自定义控制。没有结果。
I have tried looking for certain interfaces (ITextControl) that validatable controls (TextBox) implement and add them to my custom control. No avail.
我怎样才能让我的自定义控制基于一个小组，由正规.NET验证可验证？ （的RequiredFieldValidator，CompareValidator等）
How can I make my custom control based on a Panel, validatable by the regular .net validators? (RequiredFieldValidator, CompareValidator, etc.)
推荐答案
如果您还没有拥有它，你需要在 ValidationProperty 属性添加到您的类，以便它知道要用于验证这些属性：
If you don't already have it, you need to add the ValidationProperty attribute to your class so it knows which property to use for validation:
[ValidationProperty("Text")]
[ToolboxData("<{0}:YourCustomControl runat=server></{0}:YourCustomControl>")]
public class YourCustomControl : WebControl
...
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