问题
I'm trying to add System.Web.Extensions.dll to my C# console application so I can parse JSON. I'm using VS2010.
When I right click -> Add reference though it does not list the dll. However when I search for the file on my computer it does exist.
Please advise on the proper way to add this dll.
回答1:
Right click on your project and go to properties.
In the Target framework drop down ensure that you have ".NET Framework 4" selected and not ".NET Framework 4 Client Profile".
When you have Client Profile selected it will filter out the server side dlls like System.Web and System.Web.Extensions
来源：https://stackoverflow.com/questions/4731282/vs2010-reference-dll-is-missing-from-the-list