I have read some topic talk about UCS but. I wonder if how can i make Commanline "UCS" in Autocad by .net. This mean, Instead i input in command "UCS", i will code by vb.net have function the same UCS in Autocad. Thanks Everybody.
It sounds to me like you are looking to redefine the UCS command with your own custom procedure. Check out Kean Walmsley's post on "Replacing AutoCAD's OPEN command using .NET". Your solution will be similar, only you'll be redefining the UCS command instead of the OPEN command.