using system.windows.forms reference not showing up asp.net 4.0 -

using system.windows.forms reference not showing up asp.net 4.0 -

i trying add together reference library stated in question. throwing error on 'windows' section of library reference. can help me.

thanks!

step 1: go "solution explorer"

step 2: right click on "add reference"

step 3: search in ".net" tab reference "system.windows.dll" or "system.windows.forms.dll" (don't know 1 nowadays there prefer later) , add together it.

this should resolve problem.

asp.net reference shared-libraries