https://forums.autodesk.com/t5/net-forum/how-can-vb-net-api-perform-like-the-function-vlax-curve-in-vlisp/m-p/2542541#M69335 There were some Vlax class in VBA or VB can achieve the vlax-curve-***** function in Vlisp by using vl16.tlb.But when they process a lot of data,always make AutoCAD System crash.I heard .Net API can make so the function safely and faster.who can help me and list some vb.net code for example? Wed, 19 Aug 2009 06:45:48 GMT Anonymous 2009-08-19T06:45:48Z https://forums.autodesk.com/t5/net-forum/how-can-vb-net-api-perform-like-the-function-vlax-curve-in-vlisp/m-p/2542541#M69335 There were some Vlax class in VBA or VB can achieve the vlax-curve-***** function in Vlisp by using vl16.tlb.But when they process a lot of data,always make AutoCAD System crash.I heard .Net API can make so the function safely and faster.who can help me and list some vb.net code for example? Wed, 19 Aug 2009 06:45:48 GMT https://forums.autodesk.com/t5/net-forum/how-can-vb-net-api-perform-like-the-function-vlax-curve-in-vlisp/m-p/2542541#M69335 Anonymous 2009-08-19T06:45:48Z