Dll importing

[Exiled Hero]

Can anyone tell me why this doesn't seem tow work?

[DllImport( "MRS.dll", CallingConvention = CallingConvention.StdCall, CharSet=CharSet.Ansi)]

This is the error I recieve..

The type or namespace name 'DllImportAttribute' could not be found (are you missing a using directive or an assembly reference?) (CS0246)

This is C# btw.

Edit: nevermind, fixed it. Had to call:

using System.Runtime.InteropServices;

[MentaL]

[PenguinGuys]

(are you missing a using directive or an assembly reference?) (CS0246)

Your missing System.Runtime.InteropServices;

google
msdn C# visual CS0246