// using CmpDb = YourCompany.SecondPartNamespace.InnerNamespace.YourClass; namespace YourCompany.SecondPartNamespace { namespace InnerNamespace { public class YourClass { public static void Open( string tblName ) { System.Console.WriteLine("{0}", tblName ); } } } } public class CH1_14 { public static void Main() { CmpDb.Open("fred"); } }