Display messagebox in dll library

Question

I am writing a dll library (for example for checking login details of a user) and I want to pop up a confirmation dialog or a informational dialog in the process, for example

Answer 1

To accomplish this you need to right click on the project and select "Add Reference", then select the ".NET" tab and click "System.Windows.Forms". Then this should work inside the .dll:

System.Windows.Forms.MessageBox.Show("Hello World!");

Of course this is a bad idea for the original poster (as covered by CodeCaster).