I've viewed this link http://msdn.microsoft.com/en-us/library/zyzhdc6b.aspx?cs-save-lang=1&cs-lang=csharp#code-snippet-1
.It talks about Invode method.And I haven't got clear about some points of
this.As refered in the article : "The Invoke
method searches up the control's parent chain until it finds a control or form
that has a window handle if the current control's underlying window handle does
not exist yet. If no appropriate handle can be found, the Invoke
method will throw an exception. Exceptions that are raised during the call will
be propagated back to the caller."
I don't understand some definitions such as "the
control's parent chain", "a window handle",
"if the current control's underlying window handle",
so I hope someone gives me explainations about these ones !