i am using vs 2010 httpclient shows name space error

that dll i attached but it not working its shows httl client assembly reference errro only

system.net.http is a assembly which you don't need to install , it is always present under framework tab of assembly

just right click on references in your project---->Add Reference----->Sytem.Net.Http

System.net.http is not there newget package manager installation time path not found error will show newget package manager not eachable issue

right click on references add reference and make sure you have checked system.net.http

then

open package manager console and install below package