/// <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");
}
}
