Giving security permission error when importing dll into the controlhosted on web page

[Gouri.Mahajan7]

Hello,

I am importing "user32.dll" for calling the " Send Message" API in the
user control for getting the line number in the richtext box. I am
hosting this control on the web page. This works fine on local PC. But
gives an security permission error on remote PC. How to solve this
problem can anybody please explain me.?

Thanks in advance.

Regards,
Gouri.