other way for hiding form

Majid Kamali

Hi.
in main form, Hide method does not work, but when I use code snippet below for hiding my form, it work.
What's the difference?

BeginInvoke(new MethodInvoker(delegate

        {
            Hide();
        } ) );

Why Hide does not work but this method works?
Thanks

4 Replies

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Vulpes15y ago
Accepted answer
You must be trying to hide the form from a different thread to the UI thread on which it was created.

In a case such as this, you have to marshal the call to Hide() back to the UI thread which is what your code does. BeginInvoke() does this asynchronously and Invoke() does it synchronously.
Vulpes15y ago
If you haven't consciously created a new thread, then one must have been created implicitly.

Possible reasons include using a BackgroundWorker, a multithreaded timer or the SerialPort class but there are several others.
Majid Kamali15y ago
RE: Vulpes
Why it should be in a different thread ?
Frogleg15y ago
Try
this.Hide();