请教矢量裁切

<P>请教大家一下，因项目需要，需实现如下功能。</P>
<P>地图引擎：ArcEngine，使用的语言为C# ，</P>
<P>完成的功能：动态地将SDE服务5个图层的数据 根据一个面裁剪到本机，这5个图层的总数据量为20万条，且包括点、线、面。请问如何实现？</P>
<P>谢谢</P>

<PRE>Public Sub ClipFC()
        MsgBox("entra")
        Dim filePath As String
        filePath = "C:\mxd\PGDB.mdb"

        Dim pWorkspace As IWorkspace
        Dim pFact As IWorkspaceFactory
        pFact = New ESRI.ArcGIS.DataSourcesGDB.AccessWorkspaceFactory
        pWorkspace = pFact.OpenFromFile(filePath, 0)

        Dim pFWorkspace As IFeatureWorkspace
        pFWorkspace = pWorkspace

        Dim pInfc As IFeatureClass
        Dim pClipfc As IFeatureClass
        pInfc = pFWorkspace.OpenFeatureClass(txtEntrada.Text)
        'MsgBox(pFWorkspace.OpenFeatureDataset("PGDB.mdb"))
        pClipfc = pFWorkspace.OpenFeatureClass(txtClip.Text)

        Dim GP As Geoprocessor = New Geoprocessor
        GP.OverwriteOutput = True

        Dim clipTool As ESRI.ArcGIS.AnalysisTools.Clip = New ESRI.ArcGIS.AnalysisTools.Clip
        clipTool.in_features = pInfc
        clipTool.out_feature_class = "C:/mxd/PGDB.mdb/" ; txtSalida.Text
        clipTool.clip_features = pClipfc
        GP.Execute(clipTool, Nothing)
        MsgBox("salio")

    End Sub</PRE>

支持总统一个<img src="images/post/smile/dvbbs/em02.gif" />