/// <summary> /// Deletes the anno features in feature layer. /// </summary> /// <param name="featureLayer">The feature layer.</param> public static void DeleteAnnoFeaturesInFeatureLayer(IFeatureLayer featureLayer) { if (featureLayer == null) { return; } IFeatureClass featureClass = featureLayer.FeatureClass; IDataset dataset = featureClass as IDataset; IWorkspace pWorkspace = dataset.Workspace; IWorkspaceEdit pWorkspaceEdit = pWorkspace as IWorkspaceEdit; pWorkspaceEdit.StartEditing(true); pWorkspaceEdit.StartEditOperation(); IWorkspaceProperties2 workspaceProperties2 = (IWorkspaceProperties2)pWorkspace; //判断workspace是否可以执行SQL语句 IWorkspaceProperty canExecuteSqlProperty = workspaceProperties2.get_Property(esriWorkspacePropertyGroupType.esriWorkspacePropertyGroup, (int)esriWorkspacePropertyType.esriWorkspacePropCanExecuteSQL); if (canExecuteSqlProperty.IsSupported) { //ExecuteSQL删除feature pWorkspace.ExecuteSQL("delete from " + featureClass.AliasName + " where objectid >=0"); } pWorkspaceEdit.StopEditOperation(); pWorkspaceEdit.StopEditing(true); }
public static void ClearFeaturesInFeatureLayer(IFeatureLayer featureLayer) { if (featureLayer == null) { return; } IFeatureClass featureClass = featureLayer.FeatureClass; IDataset dataset = featureClass as IDataset; IWorkspace pWorkspace = dataset.Workspace; IWorkspaceProperties2 workspaceProperties2 = pWorkspace as IWorkspaceProperties2; //判断workspace是否可以执行SQL语句 IWorkspaceProperty canExecuteSqlProperty = workspaceProperties2.Property[ esriWorkspacePropertyGroupType.esriWorkspacePropertyGroup, (int)esriWorkspacePropertyType.esriWorkspacePropCanExecuteSQL]; if (canExecuteSqlProperty.IsSupported) { //ExecuteSQL删除feature pWorkspace.ExecuteSQL("delete from " + featureClass.AliasName + " where objectid >=0"); } }