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);