https://forums.autodesk.com/t5/net-forum/how-to-insert-vertex-at-the-beginning-of-the-polyline3d/m-p/2618470#M67485 Tony, great thanks for your help! Tue, 19 Jan 2010 20:39:48 GMT azaytsev 2010-01-19T20:39:48Z https://forums.autodesk.com/t5/net-forum/how-to-insert-vertex-at-the-beginning-of-the-polyline3d/m-p/2618468#M67483 Hello.<BR /> I need to insert vertex at the beginning of the polyline3d entity. The Managed Class Reference Guide suggest using Polyline3d.InsertVertexAt (ObjectId, PolylineVertex3d) or Polyline3d.InsertVertexAt (PolylineVertex3d, PolylineVertex3d) specifying NULL as the first parameters for both methods. But in this case I get NullReferenceException.<BR /> Does anybody have any ideas how to solve this problem? Thank you. Mon, 18 Jan 2010 23:19:40 GMT https://forums.autodesk.com/t5/net-forum/how-to-insert-vertex-at-the-beginning-of-the-polyline3d/m-p/2618468#M67483 azaytsev 2010-01-18T23:19:40Z https://forums.autodesk.com/t5/net-forum/how-to-insert-vertex-at-the-beginning-of-the-polyline3d/m-p/2618469#M67484 Unfortunately, the managed class reference is a classic<BR /> example of the old axiom that says that if something is<BR /> not worth doing right, it's probably not worth doing at all.<BR /> <BR /> The docs you're reading were translated from the native<BR /> API docs by someone that is relatively clueless, and with<BR /> little/no oversight by someone qualified to do that. Quite<BR /> possibly the fruit of 'that great talent at 1/5 the cost'.<BR /> <BR /> Where it says 'pass NULL', you should interpret that to<BR /> mean ObjectId.Null, in the case where the parameter is<BR /> an ObjectId. The overload that takes an ObjectId is the<BR /> one you typically use for database-resident objects.<BR /> <BR /> My advice to anyone who routinely finds themself stymied<BR /> by the managed API docs is to write Carl Bass a nice little<BR /> note suggesting that the people responsible for this trash<BR /> be reassigned to serve as 'roadies' for Shaan Hurley and<BR /> Lynn Allen.<BR /> <BR /> -- <BR /> http://www.caddzone.com<BR /> <BR /> AcadXTabs: MDI Document Tabs for AutoCAD<BR /> Supporting AutoCAD 2000 through 2010<BR /> <BR /> http://www.acadxtabs.com<BR /> <BR /> Email: string.Format("{0}@{1}.com", "tonyt", "caddzone");<BR /> <BR /> <AZAYTSEV> wrote in message news:6320348@discussion.autodesk.com...<BR /> Hello.<BR /> I need to insert vertex at the beginning of the polyline3d entity. The Managed <BR /> Class Reference Guide suggest using Polyline3d.InsertVertexAt (ObjectId, <BR /> PolylineVertex3d) or Polyline3d.InsertVertexAt (PolylineVertex3d, <BR /> PolylineVertex3d) specifying NULL as the first parameters for both methods. But <BR /> in this case I get NullReferenceException.<BR /> Does anybody have any ideas how to solve this problem? Thank you.</AZAYTSEV> Tue, 19 Jan 2010 01:20:40 GMT https://forums.autodesk.com/t5/net-forum/how-to-insert-vertex-at-the-beginning-of-the-polyline3d/m-p/2618469#M67484 Anonymous 2010-01-19T01:20:40Z https://forums.autodesk.com/t5/net-forum/how-to-insert-vertex-at-the-beginning-of-the-polyline3d/m-p/2618470#M67485 Tony, great thanks for your help! Tue, 19 Jan 2010 20:39:48 GMT https://forums.autodesk.com/t5/net-forum/how-to-insert-vertex-at-the-beginning-of-the-polyline3d/m-p/2618470#M67485 azaytsev 2010-01-19T20:39:48Z