Question

Anyone know a messageBox in .NET that doesn’t block the thread that created it untill it’s closed ?

Answer 1

The default MessageBox which you are using through System.Windows.Forms namespace will always be Modal (i.e., Blocking). If you want to have a Modeless message box, you should create your own WindowsForm that looks like a MessageBox.

You will then display this Form as follows:

// C#
//Display frmAbout as a modeless dialog
Form f= new Form();
f.Show();