C# 错误 CS0234：命名空间“System.Web”中不存在类型或命名空间名称“Script”
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error CS0234: The type or namespace name 'Script' does not exist in the namespace 'System.Web'
提问by scatmoi
I am trying to use JavaScriptSerializerin my application.
我正在尝试JavaScriptSerializer在我的应用程序中使用。
I initially received
我最初收到
Cannot find JavaScriptSerializer
找不到 JavaScriptSerializer
and I solved it by adding:
我通过添加解决了它：
using System.Web.Script.Serialization;
But then the sub-keyword Scriptis underlined with a blue line:
但是子关键字Script用蓝线下划线：
The type or namespace 'Script' does not exist in the namespace 'System.Web' (are you missing an assembly reference?)
命名空间“System.Web”中不存在类型或命名空间“Script”（您是否缺少程序集引用？）
So I added to the project a reference to:
所以我在项目中添加了对以下内容的引用：
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.0\System.Web.Extensions.dll
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.0\System.Web.Extensions.dll
That didn't help. I am still receiving the same blue underline with same error. The reference is marked with an exclamation mark yellow warning:
那没有帮助。我仍然收到相同的蓝色下划线和相同的错误。引用标有感叹号黄色警告：
I tried the suggested solutions on this thread, but as @user781490 indicated, they didn't help in my situation.
我在此线程上尝试了建议的解决方案，但正如@user781490 指出的那样，它们对我的情况没有帮助。
Any idea how to resolve this?
知道如何解决这个问题吗？
采纳答案by Tejas Sharma
I found this MSDN forum post which suggests two solutions to your problem.
我发现这篇 MSDN 论坛帖子为您的问题提出了两种解决方案。
First solution (not recommended):
第一种解决方案（不推荐）：
Find the .Net Framework 3.5 and 2.0 folder
Copy System.Web.Extensions.dll from 3.5 and System.Web.dll from 2.0 to the application folder
Add the reference to these two assemblies
Change the referenced assemblies property, setting "Copy Local" to true And build to test your application to ensure all code can work
找到 .Net Framework 3.5 和 2.0 文件夹
将 System.Web.Extensions.dll 从 3.5 和 System.Web.dll 从 2.0 复制到应用程序文件夹
添加对这两个程序集的引用
更改引用的程序集属性，将“Copy Local”设置为 true 并构建以测试您的应用程序以确保所有代码都可以工作
Second solution (Use a different class / library):
第二种解决方案（使用不同的类/库）：
The user who had posted the question claimed that Uri.EscapeUriStringand How to: Serialize and Deserialize JSON Datahelped him replicate the behavior of JavaScriptSerializer.
发布问题的用户声称，Uri.EscapeUriString以及如何：序列化和反序列化 JSON 数据帮助他复制了JavaScriptSerializer.
You could also try to use Json.Net. It's a third party library and pretty powerful.
您也可以尝试使用Json.Net。这是一个第三方库，非常强大。
回答by Costa Zachariou
I had the same. Script been underlined. I added a reference to System.Web.Extensions. Thereafter the Script was no longer underlined. Hope this helps someone.
我有同样的。脚本已加下划线。我添加了对 System.Web.Extensions 的引用。此后脚本不再有下划线。希望这可以帮助某人。
回答by Enkode
Since JsonSerializer is deprecated in .Net 4.0+ I used http://www.newtonsoft.com/jsonto solve this issue.
由于 JsonSerializer 在 .Net 4.0+ 中已弃用，我使用http://www.newtonsoft.com/json来解决这个问题。
NuGet- > Install-Package Newtonsoft.Json
NuGet-> 安装包 Newtonsoft.Json
回答by Usman
Just Add reference to System.Web.Extensions and happy to go.
只需添加对 System.Web.Extensions 的引用就可以了。
回答by Siddhartha
Add System.Web.Extensions as a reference to your project
添加 System.Web.Extensions 作为对您项目的引用
For Ref.
对于参考。
