[求助][讨论]关于ISet的对象无法实现.Add方法

<P><FONT color=#3809f7>部分代码如下：问题是循环的pDelSet.Add pFeat后，pDelSet.Count = 1，不知道有人知道吗?为什么?难道是bug?</FONT></P>
<P><FONT color=#ff0000>Dim pDelSet As ISet<BR>    Dim pFeatEdit As IFeatureEdit    <BR>    <BR>    Dim pDS As IDataset<BR>    Dim pWS As IWorkspace<BR>    Dim pWSEdit As IWorkspaceEdit<BR>    Set pDS = pFeatCls<BR>    Set pWS = pDS.Workspace<BR>    Set pWSEdit = pWS<BR>    <BR>    pWSEdit.StartEditing True<BR>    pWSEdit.StartEditOperation<BR>    <BR>    Set pDelSet = New esriSystem.Set<BR>    Dim pFeat As IFeature<BR>    Set pFeat = pFeatCur.NextFeature<BR>    Do While Not pFeat Is Nothing<BR>    <BR>        pDelSet.Add pFeat<BR>        Set pFeat = pFeatCur.NextFeature<BR>    <BR>    Loop<BR>    <BR>    pDelSet.Reset<BR>    Set pFeatEdit = pDelSet.Next<BR>    <BR>    Do While Not pFeatEdit Is Nothing<BR>    <BR>        pFeatEdit.DeleteSet pDelSet<BR>        Set pFeatEdit = pDelSet.Next<BR>    <BR>    Loop<BR>    <BR>    pWSEdit.StopEditOperation<BR>    pWSEdit.</FONT><FONT color=#f70909>StopEditing True</FONT></P>
<P><FONT color=#000000>QQ 394994662</FONT></P>
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<P>这个接口做删除时效率很高，至于count的问题，要先reset，ao示例代码里有</P>

<P>为什么用这种方式删除feature，似乎多了一次循环，难道这个接口效率更高？</P>
<P>另外，如果你能正确删除对象，那在reset后在获取count试试，不一定是真正bug</P>