[AttributeUsage(AttributeTargets.Class)] 
public class InspiredByAttribute : System.Attribute 
{ 
public string InspiredBy; 
public InspiredByAttribute( string inspiredBy ) 
{ 
InspiredBy = inspiredBy; 
} 
} 
[InspiredBy("your Message")] 
class CTest 
{ 
}
class CApp 
{ 
public static void Main() 
{ 
object[] atts = typeof(CTest).GetCustomAttributes(true); 
foreach( object att in atts ) 
if( att is InspiredByAttribute ) 
Console.WriteLine( "Class CTest was inspired by {0}", ((InspiredByAttribute)att).InspiredBy ); 
} 
}