"The type or namespace name could not be found" 发布时 ASP .NET MVC 项目
"The type or namespace name could not be found" when publishing ASP .NET MVC Project
我是 C# ASP .NET MVC 的新手，所以我不确定很多事情。但我在我的新公司继承了这个项目，我只是试图构建我在开始这里时接管的计算机上存储的文件。我很确定自从最后一个人离开后没有人碰过这些文件，所以我认为代码应该没有问题，因为该网站现在已经上线并正在运行。
但是当我尝试将这些文件发布到暂存站点（出于测试目的）时，我遇到了一堆相同的错误（取出了错误中给出的完整路径）并且项目无法发布。
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
项目中的很多文件出现了更多的同类错误。错误显示的方式让我相信这是一个简单的一次性修复，因为它们几乎都是相同的错误。
有人知道如何修复这些错误以便我可以成功构建此项目吗？
您需要确保您的项目引用了所有必需的命名空间。例如，HttpGetAttribute 和该列表中的所有其他人实际上属于 System.Web.Mvc。
如果您在 VS 中打开该项目的引用 'folder'，您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”。单击左侧的程序集树视图项，然后在右侧的搜索框中键入 System.Web.Mvc，它将显示该 DLL 的版本列表。
为了以后的参考，每当你看到这样的东西时，最好的解决方法是只搜索找不到的 class 的名称，然后是 'MSDN'，在您会搜索您的案例 'HttpGetAttribute msdn'。这将告诉您需要为它包括哪个参考。
首先确保基础项目（没有任何对其他项目的引用）构建正常。如果没有，请检查项目树中的 References 文件夹。如果任何图标有警告，则您对库的引用无效。
然后从基础项目转到引用基础项目的项目，继续进行，直到整个解决方案再次构建正常。
问题很可能是由于 nuget 包没有被恢复。如果您的团队没有将 nuget 包签入源代码管理，您将需要右键单击解决方案资源管理器中的解决方案和 select 'Enable Nuget Package Restore'，然后重建解决方案。
我是 C# ASP .NET MVC 的新手，所以我不确定很多事情。但我在我的新公司继承了这个项目，我只是试图构建我在开始这里时接管的计算机上存储的文件。我很确定自从最后一个人离开后没有人碰过这些文件，所以我认为代码应该没有问题，因为该网站现在已经上线并正在运行。
但是当我尝试将这些文件发布到暂存站点（出于测试目的）时，我遇到了一堆相同的错误（取出了错误中给出的完整路径）并且项目无法发布。
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
项目中的很多文件出现了更多的同类错误。错误显示的方式让我相信这是一个简单的一次性修复，因为它们几乎都是相同的错误。
有人知道如何修复这些错误以便我可以成功构建此项目吗？
您需要确保您的项目引用了所有必需的命名空间。例如，HttpGetAttribute 和该列表中的所有其他人实际上属于 System.Web.Mvc。
如果您在 VS 中打开该项目的引用 'folder'，您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”。单击左侧的程序集树视图项，然后在右侧的搜索框中键入 System.Web.Mvc，它将显示该 DLL 的版本列表。
为了以后的参考，每当你看到这样的东西时，最好的解决方法是只搜索找不到的 class 的名称，然后是 'MSDN'，在您会搜索您的案例 'HttpGetAttribute msdn'。这将告诉您需要为它包括哪个参考。
首先确保基础项目（没有任何对其他项目的引用）构建正常。如果没有，请检查项目树中的 References 文件夹。如果任何图标有警告，则您对库的引用无效。
然后从基础项目转到引用基础项目的项目，继续进行，直到整个解决方案再次构建正常。
问题很可能是由于 nuget 包没有被恢复。如果您的团队没有将 nuget 包签入源代码管理，您将需要右键单击解决方案资源管理器中的解决方案和 select 'Enable Nuget Package Restore'，然后重建解决方案。