c# - 发布ASP .NET MVC项目时的“The type or namespace name could not be found”

Question

我是C#ASP .NET MVC的新手，所以我不确定很多事情。但是我在新公司继承了这个项目，而我只是试图构建我在这里开始工作时存储在接管的计算机上的文件。我敢肯定，自从最后一个家伙离开以来，没有人碰过这些文件，所以我认为代码应该没有问题，因为该站点现在可以正常使用并且可以正常工作。

但是，当我尝试将这些文件发布到登台站点(出于测试目的)时，我遇到了一堆相同的错误(找出错误中给出的完整路径)，并且该项目无法发布。

    Error   77  The type or namespace name 'Controller' could not be found (are you missing a using directive or an assembly reference?)    \Controllers\AccountController.cs   15  38  Project
Error   99  The type or namespace name 'HttpGetAttribute' could not be found (are you missing a using directive or an assembly reference?)  \Controllers\AccountController.cs   17  10  Project
Error   100 The type or namespace name 'HttpGet' could not be found (are you missing a using directive or an assembly reference?)   \Controllers\AccountController.cs   17  10  Project
Error   115 The type or namespace name 'ActionResult' could not be found (are you missing a using directive or an assembly reference?)  \Controllers\AccountController.cs   18  16  Project
Error   182 The type or namespace name 'HttpPostAttribute' could not be found (are you missing a using directive or an assembly reference?) \Controllers\AccountController.cs   40  10  Project
Error   183 The type or namespace name 'HttpPost' could not be found (are you missing a using directive or an assembly reference?)  \Controllers\AccountController.cs   40  10  Project
Error   186 The type or namespace name 'ActionResult' could not be found (are you missing a using directive or an assembly reference?)  \Controllers\AccountController.cs   41  16  Project
Error   257 The type or namespace name 'HttpGetAttribute' could not be found (are you missing a using directive or an assembly reference?)  \Controllers\AccountController.cs   78  10  Project
Error   258 The type or namespace name 'HttpGet' could not be found (are you missing a using directive or an assembly reference?)   \Controllers\AccountController.cs   78  10  Project
Error   265 The type or namespace name 'ActionResult' could not be found (are you missing a using directive or an assembly reference?)  \Controllers\AccountController.cs   79  16  Project
Error   284 The type or namespace name 'HttpPostAttribute' could not be found (are you missing a using directive or an assembly reference?) \Controllers\AccountController.cs   89  10  Project
Error   285 The type or namespace name 'HttpPost' could not be found (are you missing a using directive or an assembly reference?)  \Controllers\AccountController.cs   89  10  Project
Error   291 The type or namespace name 'ActionResult' could not be found (are you missing a using directive or an assembly reference?)  \Controllers\AccountController.cs   90  16  Project
Error   332 The type or namespace name 'AuthorizeAttribute' could not be found (are you missing a using directive or an assembly reference?)    \Controllers\AccountController.cs   112 10  Project
Error   333 The type or namespace name 'Authorize' could not be found (are you missing a using directive or an assembly reference?) \Controllers\AccountController.cs   112 10  Project
Error   335 The type or namespace name 'ActionResult' could not be found (are you missing a using directive or an assembly reference?)  \Controllers\AccountController.cs   113 16  Project
Error   343 The type or namespace name 'AuthorizeAttribute' could not be found (are you missing a using directive or an assembly reference?)    \Controllers\AccountController.cs   121 10  Project
Error   344 The type or namespace name 'Authorize' could not be found (are you missing a using directive or an assembly reference?) \Controllers\AccountController.cs   121 10  Project
Error   345 The type or namespace name 'ActionResult' could not be found (are you missing a using directive or an assembly reference?)  \Controllers\AccountController.cs   122 16  Project
Error   363 The type or namespace name 'HttpGetAttribute' could not be found (are you missing a using directive or an assembly reference?)  \Controllers\AccountController.cs   150 10  Project
Error   364 The type or namespace name 'HttpGet' could not be found (are you missing a using directive or an assembly reference?)   \Controllers\AccountController.cs   150 10  Project
Error   365 The type or namespace name 'AuthorizeAttribute' could not be found (are you missing a using directive or an assembly reference?)    \Controllers\AccountController.cs   151 10  Project
Error   366 The type or namespace name 'Authorize' could not be found (are you missing a using directive or an assembly reference?) \Controllers\AccountController.cs   151 10  Project
Error   367 The type or namespace name 'ActionResult' could not be found (are you missing a using directive or an assembly reference?)  \Controllers\AccountController.cs   152 16  Project
Error   377 The type or namespace name 'HttpGetAttribute' could not be found (are you missing a using directive or an assembly reference?)  \Controllers\AccountController.cs   162 10  Project
Error   378 The type or namespace name 'HttpGet' could not be found (are you missing a using directive or an assembly reference?)   \Controllers\AccountController.cs   162 10  Project
Error   379 The type or namespace name 'AuthorizeAttribute' could not be found (are you missing a using directive or an assembly reference?)    \Controllers\AccountController.cs   163 10  Project
Error   380 The type or namespace name 'Authorize' could not be found (are you missing a using directive or an assembly reference?) \Controllers\AccountController.cs   163 10  Project
Error   384 The type or namespace name 'ActionNameAttribute' could not be found (are you missing a using directive or an assembly reference?)   \Controllers\AccountController.cs   164 10  Project
Error   385 The type or namespace name 'ActionName' could not be found (are you missing a using directive or an assembly reference?)    \Controllers\AccountController.cs   164 10  Project

对于项目中的许多文件，还有很多同类错误。错误的显示方式使我相信这是一个容易解决的问题，因为它们几乎都是相同的错误。

任何人都知道如何解决这些错误，以便我可以成功地构建此项目？

Answer 1

您需要确保您的项目具有对所有必需 namespace 的引用。例如，HttpGetAttribute和该列表中的所有其他名称实际上属于System.Web.Mvc。

如果您在VS中打开该项目的引用“文件夹”，则可能会在某些引用旁边看到警告标志。删除它们并重新添加它们。

要重新添加引用，请首先将其删除，然后右键单击“引用”文件夹，然后单击“添加引用”。单击左侧的Assembles treeview项目，然后在右侧的搜索框中键入System.Web.Mvc，它将 pop 该DLL版本的列表。

为了将来引用，每当您看到类似这样的内容时，解决该问题的最佳方法是只搜索无法找到的类的名称，后跟“MSDN”，在这种情况下，您将搜索“HttpGetAttribute msdn”。这将告诉您需要包括哪个引用。