How to fix Error Type 'System.Web.Script.Serialization.JavaScriptSerializer' is not defined

问题

The super obvious way is to add reference to System.web

I did that. It doesn't work.

回答1:

Add a reference to System.Web.Extensions

http://msdn.microsoft.com/en-us/library/system.web.script.serialization.javascriptserializer.aspx

Namespace: System.Web.Script.Serialization

Assembly: System.Web.Extensions (in System.Web.Extensions.dll)

回答2:

How to add System.Web.Extensions in Visual Studio 2012:

• Right-click your project.
• Click "Properties"
• Click the "References" tab on the left.
• Click the "Add" button
• Click "Assemblies"
• Click "Framework"
• Scroll down and find "System.Web.Extensions" and check the box next to it, then click OK, and save the Properties window.
• Type Imports System.Web.Script.Serialization at the top of your file (or, for C# using System.Web.Script.Serialization;)

I just had to figure this out, and it took me way longer than it should have to find the answer, so maybe that will help someone.

来源：https://stackoverflow.com/questions/19467109/how-to-fix-error-type-system-web-script-serialization-javascriptserializer-is