table表与图层之间的Join

           IFeatureLayer pFeatureLayer = axMapControl1.Map.get_Layer(0) as IFeatureLayer;             IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass;             IWorkspaceFactory pWsFact;             IWorkspace pWorkspace;              pWsFact = new OLEDBWorkspaceFactoryClass();             IPropertySet pPropertySet=new PropertySetClass();             pPropertySet.SetProperty("CONNECTSTRING", "Provider=SQLOLEDB;server=.;database=test;User Id=sa;Password=123");             pWorkspace = pWsFact.Open(pPropertySet, 0);             IFeatureWorkspace pFeatWS = (IFeatureWorkspace)pWorkspace;             ITable pOleTable = pFeatWS.OpenTable(inTable);             IMemoryRelationshipClassFactory pMemRelFact = new MemoryRelationshipClassFactoryClass();             IRelationshipClass pRelClass = pMemRelFact.Open("", pFeatureClass, "村", (IObjectClass)pOleTable, "cunWei", "forward", "backward", esriRelCardinality.esriRelCardinalityOneToOne);             IDisplayRelationshipClass pDispRC=pFeatureLayer as IDisplayRelationshipClass;             pDispRC.DisplayRelationshipClass(pRelClass, esriJoinType.esriLeftOuterJoin);