Create a Modeless Messagebox

Question

How might one go about creating a Modeless MessageBox? Do I have to just create my own Windows Form class and use that? If so, is there an easy way of adding a warning icon (rather than inserting my own image of one) and resizing based on text volume?

Answer 1

If you need a message box that just displays itself while your code continues running in the background (the box is still modal and will prevent the user from using other windows until OK is clicked), you can always start the message box in its own thread and continue doing what ever you do in the original thread:

    // Do stuff before.     // Start the message box -thread:     new Thread(new ThreadStart(delegate     {       MessageBox.Show       (         "Hey user, stuff runs in the background!",          "Message",         MessageBoxButtons.OK,         MessageBoxIcon.Warning       );     })).Start();     // Continue doing stuff while the message box is visible to the user.     // The message box thread will end itself when the user clicks OK. 

Answer 2

You'll have to create a Form and use Show() to display it Modeless. MessageBox.Show(...) behaved Modal as seen in the example by ghiboz; "Description of the message" is displayed until the user presses a button.

With MessageBox.Show(...) you get the result as soon as the messagebox is closed; with a modeless message box, your code will have to have a mechanism such as an event to react when the user eventually selects something on your message box.