ArcEngine 直连链接SDE

关键代码
IPropertySet pPropertySet = new PropertySetClass();             pPropertySet.SetProperty("SERVER", sde.IpAdress);             pPropertySet.SetProperty("INSTANCE", "sde:oracle11g$//" + sde.IpAdress + "/" + sde.Instance);             pPropertySet.SetProperty("USER", sde.User);             pPropertySet.SetProperty("PASSWORD", sde.Password);             pPropertySet.SetProperty("AUTHENTICATION_MODE", "DBMS");             pPropertySet.SetProperty("VERSION", "SDE.DEFAULT");标粗出的代码为关键代码