How to access to winform controls from the other thread?

For examle, I want to change text in the textBox from开发者_如何学编程 the method of the other class. How should I do it?

You can only access WinForm controls from the thread that created them (the same is true in WPF). But there is a mechanism inbuilt to help you: Invoke.

See this question for examples: WinForms interthread modification