topic How to convert IGeometry to IPolyline in ArcObjects SDK Questions https://community.esri.com/t5/arcobjects-sdk-questions/how-to-convert-igeometry-to-ipolyline/m-p/569790#M15365 <HTML><HEAD></HEAD><BODY><SPAN>Hi, </SPAN><BR /><BR /><SPAN>I'm trying to convert IGeometry object to IPolyline. Specifically, IGeometry, that is polygon, and convert its boundary to IPolyline object. </SPAN><BR /><BR /><SPAN>I tried </SPAN><BR /><BR /><SPAN>&nbsp;&nbsp; IPolyline plObject = (IPolyline)IGeometryobject; </SPAN><BR /><BR /><SPAN>but it was failed. </SPAN><BR /><BR /><BR /><BR /><SPAN>How can I do that? </SPAN><BR /><BR /><BR /><BR /><SPAN>Thanks. </SPAN><BR /><BR /><BR /><SPAN>Insu</SPAN></BODY></HTML> Wed, 27 Jun 2012 03:52:53 GMT InsuHong1 2012-06-27T03:52:53Z How to convert IGeometry to IPolyline https://community.esri.com/t5/arcobjects-sdk-questions/how-to-convert-igeometry-to-ipolyline/m-p/569790#M15365 <HTML><HEAD></HEAD><BODY><SPAN>Hi, </SPAN><BR /><BR /><SPAN>I'm trying to convert IGeometry object to IPolyline. Specifically, IGeometry, that is polygon, and convert its boundary to IPolyline object. </SPAN><BR /><BR /><SPAN>I tried </SPAN><BR /><BR /><SPAN>&nbsp;&nbsp; IPolyline plObject = (IPolyline)IGeometryobject; </SPAN><BR /><BR /><SPAN>but it was failed. </SPAN><BR /><BR /><BR /><BR /><SPAN>How can I do that? </SPAN><BR /><BR /><BR /><BR /><SPAN>Thanks. </SPAN><BR /><BR /><BR /><SPAN>Insu</SPAN></BODY></HTML> Wed, 27 Jun 2012 03:52:53 GMT https://community.esri.com/t5/arcobjects-sdk-questions/how-to-convert-igeometry-to-ipolyline/m-p/569790#M15365 InsuHong1 2012-06-27T03:52:53Z Re: How to convert IGeometry to IPolyline https://community.esri.com/t5/arcobjects-sdk-questions/how-to-convert-igeometry-to-ipolyline/m-p/569791#M15366 <HTML><HEAD></HEAD><BODY><SPAN>You can't cast a polygon to a polyline because they aren't the same thing.&nbsp; You need to extract the polygon boundary.&nbsp; You can do this via ITopologicalOperator.Boundary.</SPAN></BODY></HTML> Wed, 27 Jun 2012 12:21:49 GMT https://community.esri.com/t5/arcobjects-sdk-questions/how-to-convert-igeometry-to-ipolyline/m-p/569791#M15366 NeilClemmons 2012-06-27T12:21:49Z Re: How to convert IGeometry to IPolyline https://community.esri.com/t5/arcobjects-sdk-questions/how-to-convert-igeometry-to-ipolyline/m-p/569792#M15367 <HTML><HEAD></HEAD><BODY><SPAN>Thanks. It works!!</SPAN><BR /><BR /><SPAN>Thank you. It's great help for me.</SPAN></BODY></HTML> Wed, 27 Jun 2012 17:33:10 GMT https://community.esri.com/t5/arcobjects-sdk-questions/how-to-convert-igeometry-to-ipolyline/m-p/569792#M15367 InsuHong1 2012-06-27T17:33:10Z