Engine中如何打开.ags连接文件？

ESRI.ArcGIS.GISClient.IAGSServerConnectionFactory2 connectionFactory = (ESRI.ArcGIS.GISClient.IAGSServerConnectionFactory2)new ESRI.ArcGIS.GISClient.AGSServerConnectionFactory(); 

//create a property set to hold connection properties 

ESRI.ArcGIS.GISClient.IAGSServerConnection gisServer = connectionFactory.OpenFromFile(@C:\Users\Esri\Desktop10.5\AppData\Roaming\ESRI\ArcCatalog\arcgis on zhuxinying.arcgismap.com_6443 (admin).ags, 0);