Suddenly my solution tab stopped working on my Visual Studio 2013. Even it is existing project or brand new project it does not show files and folders in Solution Explorer. (File is attached)

突然，我的解决方案选项卡在我的Visual Studio 2013上停止工作。即使是现有项目或全新项目，它也不会在解决方案资源管理器中显示文件和文件夹。(文件已附上)

I tried to reset settings, restarted PC but did not work.
http://msdn.microsoft.com/en-us/library/ms247075(v=vs.100).aspx

我尝试重置设置，重新启动PC，但不起作用。Http://msdn.microsoft.com/en-us/library/ms247075(v=vs.100).aspx

I did not installed any new extensions recently I was working what ever I had for a while.

我最近没有安装任何新的扩展，我一直在做我有一段时间的工作。

Is there anything else I can do?

还有什么我能做的吗？

Update;

更新；

I am also getting this weird message when I click options Icon:

我也得到这个奇怪的消息，当我点击选项图标：

Check this out: http://www.hjerpbakk.com/blog/2014/7/25/no-content-in-solution-explorer-using-visual-studio-2013

看看这个：http://www.hjerpbakk.com/blog/2014/7/25/no-content-in-solution-explorer-using-visual-studio-2013

To quote... "This issue is because of a MEF cache corruption. Installing the feedback extension (or installing any extension) will invalidate the cache causing VS to rebuild it."

引用一下……“此问题是由于MEF缓存损坏造成的。安装反馈扩展(或安装任何扩展)将使缓存无效，从而导致VS重新生成它。”

Link to bug report: https://connect.microsoft.com/VisualStudio/feedback/details/794111/no-exports-were-found-that-match-the-constraint-contract-name

错误报告链接：https://connect.microsoft.com/VisualStudio/feedback/details/794111/no-exports-were-found-that-match-the-constraint-contract-name

Just to get the answer here on the same page as the question: users should install (or uninstall) an extension to Visual Studio as this will force a rebuild of the MEF cache. The linked article suggested installing the Microsoft Visual Studio 2013 Feedback Tool extension, which I did do and it worked, but any extension installed through the Tools, Extensions and Updates menu would probably do the job.

只需在与问题相同的页面上获得答案：用户应该安装(或卸载)一个对Visual Studio的扩展，因为这将强制重新构建MEF缓存。这篇链接的文章建议安装Microsoft Visual Studio 2013反馈工具扩展，我确实这样做了，而且它起作用了，但通过工具、扩展和更新菜单安装的任何扩展都可能完成这项工作。

I think the cause of this might have been related to an overzealous anti-virus program, but I can't say for sure.

我认为这可能与一个过于热心的反病毒程序有关，但我不能肯定。

Rebuilding didn't work for me, and I wasn't keen on installing another extension.

重建对我来说不起作用，我也不热衷于安装另一个扩展。

Got it to work in the following three steps:

通过以下三个步骤使其发挥作用：

1. Click "Show All Files" in solution explorer (in bar above search bar)
   


2. Right click folder that was previously missing, select "Include In Project"


3. Click (unselect) "Show All Files" in solution explorer.

it worked to click "show all files" in the Solution explorer!

它可以在解决方案资源管理器中单击“显示所有文件”！

As this issue is because of a MEF cache corruption. Just delete your .vs folder and re-open your solution.

由于此问题是由于MEF缓存损坏。只需删除.vs文件夹并重新打开解决方案。

For future Googlers / related issue in 2023, "Explorer" was not showing up for me in the sidebar at all. No way to view files and folders.

对于2023年谷歌用户/相关问题的未来，“探索者”根本不会出现在侧边栏中。无法查看文件和文件夹。

I had to delete the C:\Users\%username%\AppData\Roaming\Code\User\globalStorage folder to get it to show up.

我不得不删除C：\Users\%username%\AppData\Roaming\Code\User\globalStorage文件夹才能让它显示出来。

Even, it will work if you clear your local app data for visual studio.
%temp% AppData\Roaming\Microsoft\VisualStudio.
%temp% AppData\Local\Microsoft\VisualStudio.
Delete the files and restart your visual studio.

甚至，如果您清除本地应用程序数据以用于Visual Studio，它也会起作用。%Temp%AppData\Roaming\Microsoft\VisualStudio。%Temp%AppData\Local\Microsoft\VisualStudio。删除文件并重新启动您的Visual Studio。

1. Copy and paste the folders and files at the project location for integrating the project module and build the project even though namespace has correct. This are the way to resolve




2. The file/folder is not visible proper so Right-click
   improper visible file/folder and click the Include in Project




3. Build the project -> If any error occur then it like namespace may be error because copy from one project to another project or else same project with different location so that check it




4. If the error like Build action 'Page' is not supported by the specific combination of the project's targets.




5. Go and resolve by further steps

This worked for me:

这对我来说很管用：

1. Right-click on the project


2. Rebuild

with VS 2022 most of you must be trying to create a .NET 6 framework solutions. But you need to install the .NET 6 sdk separately for your projects to be listed under solution.

在VS2022中，你们中的大多数人肯定都在尝试创建一个.NET6框架解决方案。但是，您需要单独安装.NET6SDK，才能使您的项目列在解决方案下。

Installing .NET 6 SDK, resolved my issue.

安装.NET 6 SDK，解决了我的问题。

I came across this post looking for a solution about some methods not being found on Solution Explorer. Just in case, VS 2022 has options to search for methods within File Contents, see image below, activating this option my issue was solved:

我看到这篇文章是为了寻找有关解决方案资源管理器中找不到的某些方法的解决方案。以防万一，VS 2022有在文件内容中搜索方法的选项，请参见下图，激活此选项我的问题已解决：

Open the Solution Explorer and click on Show All Files Button, it will show the files which were there in your project and you were unable to see them. Then if you want to include them in your project, select the folder and right-click on it and select Include in the project.

打开解决方案资源管理器并单击显示所有文件按钮，它将显示您的项目中存在但您无法查看的文件。然后，如果您想要将它们包含在项目中，请选择该文件夹并右键单击它，然后选择Include in the Project。