类型< type>同时存在于"A"和"B"中 [英] The type <type> exists in both 'A' and 'B'

问题描述

现在，我知道这里已经有很多这样的问题，但是翻阅它们之后，我还没有找到能够解决我的特定问题的问题.

Now I know there are a number of these questions already up here, but after flipping through them, I haven't found one that solves my specific problem.

我有一个ASP.NET MVC 4.5项目.我使用了NuGet并将Newtonsoft.Json添加到了项目中.一旦我在代码中使用了它(以驼峰方式进行一些序列化)，我的项目就不再正确构建，并出现以下错误:

I have an ASP.NET MVC 4.5 project. I used NuGet and added Newtonsoft.Json to the project. As soon as I used it in my code (to do some serialization in camel-case), my project no longer builds correctly with the following error:

"C:.. \ Microsoft Visual Studio 12.0 \ Blend \ Newtonsoft.Json.dll"和"C:.. \ Visual Studio 2013 \ Projects \ myProject"中都存在类型"Newtonsoft.Json.Serialization.CamelCasePropertyNamesContractResolver" \ packages \ Newtonsoft.Json.6.0.1 \ lib \ net45 \ Newtonsoft.Json.dll'

The type 'Newtonsoft.Json.Serialization.CamelCasePropertyNamesContractResolver' exists in both 'C:..\Microsoft Visual Studio 12.0\Blend\Newtonsoft.Json.dll" and 'C:..\Visual Studio 2013\Projects\myProject\packages\Newtonsoft.Json.6.0.1\lib\net45\Newtonsoft.Json.dll'

不幸的是，每个文件都是相同的文件，直到公用密钥，所以我不能使用Web.config中的依赖程序集引用(如在其他地方建议的那样).我宁愿使用通过NuGet检索的dll，以便更轻松地升级到新版本.

Unfortunately, it's the same file down to the public key on each so I can't use the dependency assembly reference in Web.config (as suggested elsewhere). I would prefer to use the dll retrieved via NuGet so upgrades to new versions are easier.

此外，Temporary Internet文件夹中都没有该文件夹，因此我不能简单地删除它并使它工作.

Additionally, neither one is in the Temporary Internet folder, so I can't simply delete that and have it work either.

我该如何指定要使用的特定程序集文件，以便正确构建项目?谢谢！

How can I go about specifying the specific assembly file I want to use so I can build the project correctly? Thanks!

推荐答案

Xaniff，手动打开项目文件并查找Newtonsoft.您很有可能会找到一个项目组，该项目组所引用的版本与您的nuget软件包不匹配.

Xaniff, open your project file manually and look for Newtonsoft. You will more than likely find an item group with a reference to a version that is not matching your nuget package.. In my case I found this:

<ItemGroup>
    <Reference Include="Newtonsoft.Json">
        <HintPath>..\packages\Newtonsoft.Json.5.0.6\lib\net45\Newtonsoft.Json.dll</HintPath>
    </Reference>
</ItemGroup>

我删除了该项目组，关闭了项目文件，重新加载，一切都很好.

I deleted this item group, closed the project file, reloaded, and all was well.

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