//file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
            Console.WriteLine(Assembly.GetCallingAssembly().CodeBase);
            //D:\仿真终端\DB4oStudy\DB4oStudy\DB4oTest\bin\Debug
            Console.WriteLine(Environment.CurrentDirectory);
            //C:\Documents and Settings\Administrator\Local Settings\Application Data           
            Console.WriteLine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData));