将继承的控件添加到面板

Question

I have a base form with two buttons (eg OK and Cancel). I want to use a TableLayoutPanel and have the two buttons in it. Child forms should be able to add more controls to the table as well as modify its layout itself via the designer.

So far I can't get this to work. I have tried the following:

• Adding the TableLayoutPanel to the child form. Designer refuses to add the two buttons to the panel.
• Adding the TableLayoutPanel in the base form. Can't add controls to the panel from the child form.

Answer 1

在基本表单中，必须为TableLayoutPanel设置属性Modifiers = Protected，并在子表单中设置要更改的任何其他控件。

Answer 2

The reason why you cant edit your TableLayoutPanel in the derived class is because you are attempting to use a feature of WinForms called 'visual inheritance'. Unfortunately, the TableLayoutPanel does not support visual inheritance:

http://msdn.microsoft.com/en-us/library/ms171689.aspx (read at the bottom of the page) http://msdn.microsoft.com/en-us/library/1z3efhd2.aspx

This is why it appears blocked in the inherited controls. I am not sure why they do not support this feature, but I have recently come across the same problem and ended up having to solve the problem another way.

Answer 3

由于这已经有将近一年的时间了，而且WindowsForms在对抗WPF方面正在缓慢失败，因此答案似乎是“只是不做”。