看看这两个参数

<P>IGeometryCollection.AddGeometry(ipPolygon,a,b);</P>
<P>在vb中a,b两个参数是可选择的，但在c#中必须给以设置。</P>
<P>那为高手知道后面这两个参数是什么意思。。。。</P><img src="images/post/smile/dvbbs/em12.gif" /><img src="images/post/smile/dvbbs/em12.gif" /><img src="images/post/smile/dvbbs/em12.gif" /><img src="images/post/smile/dvbbs/em12.gif" /><img src="images/post/smile/dvbbs/em12.gif" /><img src="images/post/smile/dvbbs/em12.gif" />

<P>帮助里的内容：</P><P>object.AddGeometry (inGeometry [,before] [,after] )</P><P>Remarks</P><P>When applying the AddGeometry method give either the before or after index and not both. Adding a Geometry to the collection as the first one is done by setting the before index as 0.
 </P>dim m_pGeoColl as IGeometryCollectionset m_pGeoColl = new multipoint Private Sub btnAddFirst_Click()
Dim pPoint As IPoint
Set pPoint = New point
pPoint.PutCoords CDbl(edtX.Text), CDbl(edtY.Text)
m_pGeoColl.AddGeometry pPoint, 0
End Sub