what is Error (CS1752 Interop type 'PointClass' cannot be embedded. Use the applicable interface instead.)

Question

I am trying to update my Addin from ArcObject 10.3 to 10.5 using VS2015 .net 5.2 Frame work but I am getting Error CS1752: CS1752 Interop type 'PointClass' cannot be embedded. Use the applicable interface instead.) // Get selected line segments end points pPolyline = pFeature.Shape as IPolyline; IPoint pOutPoint = new PointClass(); // Convert screen coordinates to Map coordinates //pPoint = ; pMxApp = pApp as IMxApplication; pPoint = pMxApp.Display.DisplayTransformation.ToMapPoint(X, Y); ‍‍‍‍‍‍‍ and same Error here as Well. //Get normal ILine pTangent = new LineClass(); pPolyline.QueryTangent(esriSegmentExtension.esriExtendTangentAtFrom, FromDist, false, 100.0, pTangent);‍‍‍ I do appreciate any help or hint Husham

HushamMohamed · Accepted Answer

Thank you Sean, I found that just Removing the suffix Class solve the Problem.. // Get selected line segments end points pPolyline = pFeature.Shape as IPolyline; IPoint pOutPoint = new Point(); // Convert screen coordinates to Map coordinates //pPoint = ; pMxApp = pApp as IMxApplication; pPoint = pMxApp.Display.DisplayTransformation.ToMapPoint(X, Y); //Get normal ILine pTangent = new Line(); pPolyline.QueryTangent(esriSegmentExtension.esriExtendTangentAtFrom, FromDist, false, 100.0, pTangent);