Question

I have some code for a MessageBox, but I get a red line below the code and also in the beginning of the class at using System.Windows.Forms!?

Isn’t it enough to add the using System.Windows.Forms to show MessageBoxes? Or could I have missed something else? Hints are preciated! Thanks!

EDIT:

The error message:
Error 1 The type or namespace name ‘Windows’ does not exist in the namespace ‘System’ (are you missing an assembly reference?)

Answer 1

You should add a reference to System.Windows.Forms:

you can do that like this:

1. Right click on the project
2. click on “add reference”
3. in the opened window go to “.net” tab
4. look for System.Windows.Forms and press OK (or double click on it)