在 VS2010 中找不到 DataContractJsonSerializer [英] Cannot find DataContractJsonSerializer in VS2010

问题描述

我正在开发一个演示 Silverlight 应用程序，我想做一些简单的 JSON.我找到了 System.Runtime.SerializationMSDN 上的 .Json.DataContractJsonSerializer 类，但我似乎无法在 Visual Studio 2010 中成功引用它.

我已经添加了对 System.Runtime.Serialization 的引用，但是如果我有一个 DataContractJsonSerializer(即使使用完全限定的类名)，我仍然会收到编译错误.我的项目配置为 Silverlight 4.添加引用时，程序集确实有 2.0 版本号，但我找不到 4.0 版本的程序集.

为什么我不能使用这个类?

<前>命名空间:System.Runtime.Serialization.Json程序集:System.Runtime.Serialization(在 System.Runtime.Serialization.dll 中)

解决方案

有一个 System.Runtime.Serialization.Json.dll 文件，但您无法在该文件中找到 System.Runtime.Serialization.Json 命名空间.您实际上必须引用 System.ServiceModel.Web.dll 库，这就是 DataContractJsonSerializer 类所在的位置.在我的机器上，DLL 位于:C:\Program Files\Reference Assemblies\Microsoft\Framework\Silverlight\v4.0\System.ServiceModel.Web.dll

I am working on a demo Silverlight app and I'd like to do some simple JSON. I found the System.Runtime.Serialization.Json.DataContractJsonSerializer class on MSDN, but I can't seem to reference it successfully in Visual Studio 2010.

I have added a reference to System.Runtime.Serialization, but I still get a compile error if I have a DataContractJsonSerializer (even with a fully qualified class name. My project is configured to Silverlight 4. The assembly does have a 2.0 version number when I add the reference, but I can't find a version 4.0 assembly.

Why can't I use this class?

Namespace:  System.Runtime.Serialization.Json
Assembly:  System.Runtime.Serialization (in System.Runtime.Serialization.dll)

解决方案

There is a System.Runtime.Serialization.Json.dll file but that is not where you can find the System.Runtime.Serialization.Json namespace. You actually have to reference the System.ServiceModel.Web.dll library and that is where the DataContractJsonSerializer class. On my machine, the DLL was found here: C:\Program Files\Reference Assemblies\Microsoft\Framework\Silverlight\v4.0\System.ServiceModel.Web.dll

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