Compiler Warning (level 1) CS3003

Type of 'variable' is not CLS-compliant

A public, protected, or protectedinternal variable must be of a type that is compliant with the Common Language Specification (CLS). For more information on CLS Compliance, see Writing CLS-Compliant Code and Common Language Specification.

Example

The following example generates CS3003:

// CS3003.cs

[assembly:System.CLSCompliant(true)]
public class a
{
    public ushort a1;   // CS3003, public variable
    public static void Main()
    {
    }
}