在 C#.net 上扩展复选框控件
我想扩展可以在每个表单上使用的复选框控件。
如果选中复选框，则返回“Y”，否则返回“N”。
我如何扩展复选框控件并以其他形式使用它？
I want to extend checkbox control which can use on every form.
If check box is checked than it will return "Y" otherwise "N".
How may i extend check box control and use it in other forms ?
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扩展方法既快速又简单，但正如您在标签中提到的那样，您不能在 .NET 2.0 中做到这一点。
您必须创建一个新的用户控件，并在其上放置一个
CheckBox。然后，您必须对最常见的事情做出响应，以使其像
CheckBox一样工作。例如，您必须处理控件的
Resize()事件，并将所做的任何更改相应地应用到其中的CheckBox。完成所有这些操作后，您现在就拥有了一个由您自己创建的功能齐全的
CheckBox控件，该控件非常模仿原始控件。只有这样你才能像这样创建一个公共获取属性：
就是这样。
但如果我是你，我就不会经历这些麻烦。
我会在写入数据库之前检查自己。
老实说，为这样一个微小的功能扩展现有的用户控件是不值得的。
Extension method is quick and easy, but you can't do that in .NET 2.0, as you mentioned in your tags.
You would have to create a new user control, and place a
CheckBoxon it.You would then have to respond to the most common things to make it act like a
CheckBox.For example, you would have to handle your control's
Resize()event, and apply whatever change made accordingly to theCheckBoxwithin.After all that is done, you now have a fully-functional
CheckBoxcontrol of your own creation that very much mimics that of the original one.Only then you can create a public get property like so:
And that is it.
But if I were you, I wouldn't go through all that hassle.
I would just do that check myself right before I write to the database.
Extending an existing user control for such a minute feature is not worth it, honestly.