CSHARP

wpf show message box

MessageBox.Show("Hello MessageBox");

wpf MessageBox result

MessageBoxResult result = MessageBox.Show("Would you like to greet the world with a "Hello, world"?", "My App", MessageBoxButton.YesNoCancel);
switch(result)
{
	case MessageBoxResult.Yes:
		MessageBox.Show("Hello to you too!", "My App");
		break;
	case MessageBoxResult.No:
		MessageBox.Show("Oh well, too bad!", "My App");
		break;
	case MessageBoxResult.Cancel:
		MessageBox.Show("Nevermind then...", "My App");
		break;
}