i have two line,part of which covered each other,i need get the covered part
you mean the intersection, right? see here: ArcObjects Help for .NET developers (ITopologicalOperator.Intersect)
thanks for your reply，actually，it is not the intersection
i mean，some parts of two line，in the spatial，are almost same
i need get the same part
do you see the graphic in the link to the documentation for ITopologicalOperator.Intersect?
I guess the example with the two lines shows the solution for your problem... or i don't get it
thanks，you are right，i did not think about it carefully
thanks a lot
is ITopologicalOperator.Intersect can used in 3Dimension？
i got an argument exception，when set esriGeometry3Dimension
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