转ArcEngine数据删除几种方法和性能比较

1、IFeatureCursor 游标查询后，遍历删除

2、更新游标删除IFeatureCursor.DeleteFeature()

3、ITable.DeleteSearchedRows删除

4、 IDataset.Workspace.ExecuteSQL

 

一、  几种删除方法代码

1.  查询结果中删除

 

 private void Delete1(IFeatureClass PFeatureclass)
 {
  IQueryFilter pQueryFilter = new QueryFilterClass();
  pQueryFilter.WhereClause = "objectID<=" + DeleteNum;
  IFeatureCursor pFeatureCursor = PFeatureclass.Search(pQueryFilter, false);            

  IFeature pFeature = pFeatureCursor.NextFeature();
while (pFeature != null)
  {
    pFeature.Delete();
    pFeature = pFeatureCursor.NextFeature();
  }
  System.Runtime.InteropServices.Marshal.ReleaseComObject(pQueryFilter);
 }

2.  更新游标删除

private void Delete2(IFeatureClass PFeatureclass)
{
    IQueryFilter pQueryFilter = new QueryFilterClass();
    pQueryFilter.WhereClause = "objectID<=" + DeleteNum;
    IFeatureCursor pFeatureCursor = PFeatureclass.Update(pQueryFilter, false);
    IFeature pFeature = pFeatureCursor.NextFeature();
    while (pFeature != null)
   {
      pFeatureCursor.DeleteFeature();
      pFeature = pFeatureCursor.NextFeature();
    }
    System.Runtime.InteropServices.Marshal.ReleaseComObject(pQueryFilter);
 }

3.  使用DeleteSearchedRows删除
private void Delete4(IFeatureClass PFeatureclass)
        {
            IQueryFilter pQueryFilter = new QueryFilterClass();
            pQueryFilter.WhereClause = "objectID<=" + DeleteNum;
            ITable pTable = PFeatureclass as ITable;
            pTable.DeleteSearchedRows(pQueryFilter);
            System.Runtime.InteropServices.Marshal.ReleaseComObject(pQueryFilter);
        }

4.  ExecuteSQL删除
private void Delete4(IFeatureClass PFeatureclass)
        {