找不到编译动态表达式所需的一种或多种类型。您是否缺少对Microsoft.CSharp.dll和System.Core.dll的引用？

拼搏现实的明天。 2022-11-27 03:08 26阅读 0赞

本文翻译自：[One or more types required to compile a dynamic expression cannot be found. Are you missing references to Microsoft.CSharp.dll and System.Core.dll?][One or more types required to compile a dynamic expression cannot be found. Are you missing references to Microsoft.CSharp.dll and System.Core.dll]

*I am trying to compile this code in Microsoft Visual C\# 2010* **我正在尝试在Microsoft Visual C＃2010中编译此代码**

using System;
    using System.Globalization;
    
    
    class main
    {
        static void Main()
        {
    
            dynamic d;
            d = "dyna";
            Console.WriteLine(d);    
        }
    }

*but I am getting these two errors* **但是我遇到了这两个错误**

*Error 1 Predefined type 'Microsoft.CSharp.RuntimeBinder.Binder' is not defined or imported* ***错误1未定义或导入预定义的类型'Microsoft.CSharp.RuntimeBinder.Binder'***

*Error 2 One or more types required to compile a dynamic expression cannot be found.* ***错误2找不到编译动态表达式所需的一种或多种类型。*** *Are you missing references to Microsoft.CSharp.dll and System.Core.dll?* ***您是否缺少对Microsoft.CSharp.dll和System.Core.dll的引用？***

*I read this other [post][] but I am new to C\# and I couldn't understand what really is the problem.* **我读了另[一篇文章，][post]但是我是C＃的新手，我不明白真正的问题是什么。** *Especially what and where are these so called `.config` files..* **特别是这些所谓的`.config`文件在什么地方。**

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### \#1楼 ###

参考：[https://stackoom.com/question/Nclc/找不到编译动态表达式所需的一种或多种类型-您是否缺少对Microsoft-CSharp-dll和System-Core-dll的引用][https_stackoom.com_question_Nclc_-_Microsoft-CSharp-dll_System-Core-dll]

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### \#2楼 ###

在您的解决方案资源管理器窗口中，右键单击“引用”，选择“添加引用”，转到“ .NET”选项卡，找到并添加Microsoft.CSharp。

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### \#3楼 ###

*Make sure that your project is targeting the .NET framework 4.0.* **确保您的项目面向.NET Framework 4.0。** *Visual Studio 2010 supports .NET 3.5 framework target also, but .NET 3.5 does not support the `dynamic` keyword.* **Visual Studio 2010也支持.NET 3.5框架目标，但是.NET 3.5不支持`dynamic`关键字。**

*You can adjust the framework version in the project properties.* **您可以在项目属性中调整框架版本。** *See [http://msdn.microsoft.com/en-us/library/bb398202.aspx][http_msdn.microsoft.com_en-us_library_bb398202.aspx] for more info.* **有关更多信息，请参见[http://msdn.microsoft.com/zh-cn/library/bb398202.aspx][http_msdn.microsoft.com_en-us_library_bb398202.aspx] 。**

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### \#4楼 ###

*Red lines under the ViewBag was my headache for 3 month ).* **ViewBag下的红线让我头痛了3个月）。** *Just remove the Microsoft.CSharp reference from project and then add it again.* **只需从项目中删除Microsoft.CSharp引用，然后再次添加即可。**

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### \#5楼 ###

我遇到了同样的问题，并通过从项目中删除“ Microsoft.CSharp”引用来解决它，然后再次添加了它。

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### \#6楼 ###

*I had the same issue except removing and adding the reference back did not fix the error, so I changed .Net version from `4.5` to `4.5.1` .* **除了删除并添加回引用不能解决错误之外，我遇到了相同的问题，因此我将.Net版本从`4.5`更改为`4.5.1` 。**

*To achieve this go to your `web.config` file and change the following lines* **为此，请转到您的`web.config`文件并更改以下几行**

*to this* **对此**

*and rebuild.* **并重建。**

[One or more types required to compile a dynamic expression cannot be found. Are you missing references to Microsoft.CSharp.dll and System.Core.dll]: https://oldbug.net/q/Nclc/One-or-more-types-required-to-compile-a-dynamic-expression-cannot-be-found-Are-you-missing-references-to-Microsoft-CSharp-dll-and-System-Core-dll
[post]: https://stackoverflow.com/questions/7115055/why-am-i-getting-one-or-more-types-required-to-compile-a-dynamic-expression-can
[https_stackoom.com_question_Nclc_-_Microsoft-CSharp-dll_System-Core-dll]: https://stackoom.com/question/Nclc/%E6%89%BE%E4%B8%8D%E5%88%B0%E7%BC%96%E8%AF%91%E5%8A%A8%E6%80%81%E8%A1%A8%E8%BE%BE%E5%BC%8F%E6%89%80%E9%9C%80%E7%9A%84%E4%B8%80%E7%A7%8D%E6%88%96%E5%A4%9A%E7%A7%8D%E7%B1%BB%E5%9E%8B-%E6%82%A8%E6%98%AF%E5%90%A6%E7%BC%BA%E5%B0%91%E5%AF%B9Microsoft-CSharp-dll%E5%92%8CSystem-Core-dll%E7%9A%84%E5%BC%95%E7%94%A8
[http_msdn.microsoft.com_en-us_library_bb398202.aspx]: http://msdn.microsoft.com/en-us/library/bb398202.aspx