Question

Some context here…I have a System.Windows.Window that is used to display a modal message box. I created a Show() method that initializes the content of the window, and then calls ShowDialog(). The user clicks a button on this window, some information about the clicked button is set in the Tag property, and then the window is closed via Close().

As expected, I get a ShowDialog Exception when attempting to call ShowDialog() on the Window once is has been closed. Is there some way to reuse that same Window instance so that I don’t have to new up an instance every time I need a message box?

For example…

MessageBoxWindow mbw = new MessageBoxWindow();
result = mbw.Show("caption", "message 1");

mbw.Show("caption", "message 2");
// The above throws an exception, so I have to do this...
mbw = new MessageBoxWindow();
result = mbw.Show("caption", "message 2");

Any help would be greatly appreciated!

Answer 1

Use .Hide() instead of .Close(). That removes it without destroying it. Then you can call Show() again when needed.

 MainWindow test = new MainWindow();
  test.Show();
  test.Hide();
  test.Show();