ArcEngine连接数据库

public IPropertySet ConnectSdeSQL(string sAddress, string sDBName, string sUser, string sPassword)
        {
            IPropertySet propSet = new PropertySetClass();
            propSet.SetProperty("SERVER", sAddress);
            propSet.SetProperty("INSTANCE", "sde:sqlserver:" + sAddress + "");
            propSet.SetProperty("DATABASE", sDBName);
            propSet.SetProperty("USER", sUser);
            propSet.SetProperty("PASSWORD", sPassword);
            propSet.SetProperty("VERSION", "DBO.DEFAULT");
            propSet.SetProperty("AUTHENTICATION_MODE", "DBMS");
            return propSet;
        }

        public IPropertySet ConnectSdeOracle(string sAddress, string sDBName, string sUser, string sPassword)
        {
            IPropertySet propSet = new PropertySetClass();
            propSet.SetProperty("SERVER", sAddress);
            propSet.SetProperty("INSTANCE", "sde:oracle11g:" + sDBName + "");
            propSet.SetProperty("DATABASE", sDBName);
            propSet.SetProperty("USER", sUser);
            propSet.SetProperty("PASSWORD", sPassword);
            propSet.SetProperty("VERSION", "SDE.DEFAULT");
            return propSet;
        }