I do not think you can write one application at once for two versions of AutoCAD. So decide which version of AutoCAD you work. In any case, ObjectARX SDK 2011 is not suitable for AutoCAD 2010 - AutoCAD 2010 need to ObjectARX SDK 2010.
!!!! ObjectARX 2013 doesn't work with early version !!!!!!
Of course! You read casually (or not read?) what was write for you. gasty1001 wrote for you:
Use the ARX SDK with the same name as the AutoCAD version that the appliaction will run on. Also check the .NET framework supported by the AutoCAD version: AutoCAD 2011, ARX SDK 2011, .Net 2.0 or 3.5 AutoCAD 2012, ARX SDK 2012, .Net 4.0 AutoCAD 2013, ARX SDK 2013, .Net 4.0
in my company we use diffrenet version .. so i must create diffrenet dll to every version??
but it will be hard to create code three time or 4 , 5
AutoCAD 2011, ARX SDK 2011, .Net 2.0 or 3.5
AutoCAD 2012, ARX SDK 2012, .Net 4.0
AutoCAD 2013, ARX SDK 2013, .Net 4.0
so i think i can use ARX SDK 2013 with AutoCAD 2012 & AutoCAD 2013
and i think i can use ARX SDK 2012 with AutoCAD 2012 & AutoCAD 2013
cause it's have the same verison of .net??
It may be same source code (.vb - files) but different project/solution which produce different dll-files. Other way is most hard - using Reflection. As you are beginner I can not recommend to use reflection in order to produce one dll-file which can work in any AutoCAD version.
sorry i have a big confflict in my mind with this techonology
i think there is why to check version in class that i will do like
if Autocad2013 then
elseif AutoCAD2010 then