Messagebox and Custom Class Library

[SThornton]

Hi,

I am writing a custom control to accept date values only.

I wish to display an error message if an incorrect date is entered, however when I use the Messagebox.Show() command the dll will not compile.

The error message is "Name 'Messagebox' is not declared."

Either this is not possible, or I have to import a system reference of some kind into my project.

Can someone assist?

[Lethal]

You have to set a reference to the System.Windows.Forms assembly.

[SThornton]

Hi,

I had already done what you suggested when I started the project.

Project ->Add Reference -> .Net Tab

System.Windows.Forms.dll

Is his correct/what you mean?

[Lethal]

Yes, you may also want to import the namespace to alleviate having to use the fully qualified name when referencing types in the namespace.

[SThornton]

ahh, thats better!.

Thanks!