转自原文 

 

                    IFeatureLayer featureLayer = new FeatureLayerClass();

                    featureLayer.FeatureClass = featureClass;

                    IFeatureSelection featureSelection = featureLayer as IFeatureSelection;

                    IQueryFilter queryFilter1 = new QueryFilterClass();                     queryFilter1.WhereClause = "XZQDM like '" + xz_xzqdm + "%'";                     featureSelection.SelectFeatures(queryFilter1, esriSelectionResultEnum.esriSelectionResultNew, false);

                    ISelectionSet selectionSet = featureSelection.SelectionSet;

                    IFeatureLayer newFeatureLayer = null;                     if (selectionSet.Count > 0)                     {                         IFeatureLayerDefinition featureLayerDefinition = featureLayer as IFeatureLayerDefinition;                         newFeatureLayer = featureLayerDefinition.CreateSelectionLayer(featureClass.AliasName, true, null, null);                     }