Dear Sirs, I'm in trouble on trying to programmatically change connection properties for all layers on a map. I can do manually, but not by coding. All layers are based on Oracle views not registered into SDE. All these Oracle views have not a defined key. My approach is to get new feature class from a workspace based on my new connection and set this resulting feature class to original feature layer. The problem is that I loose definition for Unique Identifier Field (or OID): after setting new feature class, hasOID = false. But if I do manually, all works properly: 1) I press "Change Query", 2) I choose Oracle view from my new sde connection 3) ArcMap show me window for choosing Unique Identifier Field: I set it ..and all is ok. Here you are my code, the part in bold is where I try to set OID: it gives no errors, but if I try to open data window I get an error. So, my question is: how can I define OID field name to a feature class got from IFeatureWorkspace:OpenFeatureClass? foreach(IFeatureLayer featureLayer in featureLayers) { //check connection properties IDataset dataSet = (IDataset)featureLayer; IDatabaseConnectionInfo4 databaseConnectionInfo = (IDatabaseConnectionInfo4)dataSet.Workspace; string connectedUser = databaseConnectionInfo.ConnectedUser; //create workspace Type factoryType = Type.GetTypeFromProgID("esriDataSourcesGDB.SdeWorkspaceFactory"); IWorkspaceFactory workspaceFactory = (IWorkspaceFactory)Activator.CreateInstance(factoryType); IFeatureWorkspace featureWorkspace = (IFeatureWorkspace)workspaceFactory.OpenFromFile(@"C:\test\mySdeFile.sde", 0); //set new feature class by opening on new workspace IFeatureClass oldFestureClass = featureLayer.FeatureClass; featureLayer.FeatureClass = featureWorkspace.OpenFeatureClass(featureLayer.FeatureClass.AliasName); //set old spatial reference to new feature class IGeoDatasetSchemaEdit geoDatasetSchemaEdit = (IGeoDatasetSchemaEdit)featureLayer.FeatureClass; geoDatasetSchemaEdit.AlterSpatialReference(oldSpatialreference); //set old OID to new feature class int idx = featureLayer.FeatureClass.Fields.FindFieldByAliasName(oldOIDFieldName); IFieldEdit field = (IFieldEdit)featureLayer.FeatureClass.Fields.Field[idx]; field.Type_2 = esriFieldType.esriFieldTypeOID; //refresh ((IMapAdmin)mxDocument.FocusMap).FireChangeFeatureClass(oldFestureClass, featureLayer.FeatureClass); mxDocument.CurrentContentsView.Refresh(null); } Anybody has any idea on what I can do to set OID field?..
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