当尝试安装NuGet包时，我收到错误“方法或操作未实现。”这同样的操作适用于我的同事。在创建新的Mvc 3应用程序时，我在对话框中收到相同的错误：“方法或操作未实现。”有谁知道这里发生了什么？
install-package entityframework -verbose
You are downloading EntityFramework from Microsoft, the license agreement to which is available at http://go.microsoft.com/fwlink/?LinkId=242868. Check the package for additional dependencies, which may come with their own license agreement(s). Your use of the package and dependencies constitutes your acceptance of their license agreements. If you do not accept the license agreement(s), then delete the relevant components from your device.
Added file 'App.config.transform' to folder 'EntityFramework.4.3.1\Content'.
Added file 'Web.config.transform' to folder 'EntityFramework.4.3.1\Content'.
Added file 'EntityFramework.dll' to folder 'EntityFramework.4.3.1\lib\net40'.
Added file 'EntityFramework.xml' to folder 'EntityFramework.4.3.1\lib\net40'.
Added file 'EF4.3on.NET4.5Readme.txt' to folder 'EntityFramework.4.3.1\tools'.
Added file 'EntityFramework.PowerShell.dll' to folder 'EntityFramework.4.3.1\tools'.
Added file 'EntityFramework.psd1' to folder 'EntityFramework.4.3.1\tools'.
Added file 'EntityFramework.psm1' to folder 'EntityFramework.4.3.1\tools'.
Added file 'init.ps1' to folder 'EntityFramework.4.3.1\tools'.
Added file 'install.ps1' to folder 'EntityFramework.4.3.1\tools'.
Added file 'migrate.exe' to folder 'EntityFramework.4.3.1\tools'.
Added file 'EntityFramework.4.3.1.nupkg' to folder 'EntityFramework.4.3.1'.
Successfully installed 'EntityFramework 4.3.1'.
Executing script file 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1\tools\init.ps1'.
'packages.config' already exists. Skipping...
Removed file 'EntityFramework.dll' to folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1\lib\net40'.
Removed file 'EntityFramework.xml' to folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1\lib\net40'.
Removed folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1\lib\net40'.
Removed file 'App.config.transform' to folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1\Content'.
Removed file 'Web.config.transform' to folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1\Content'.
Removed folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1\Content'.
Removed file 'EF4.3on.NET4.5Readme.txt' to folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1\tools'.
Removed file 'EntityFramework.PowerShell.dll' to folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1\tools'.
Removed file 'EntityFramework.psd1' to folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1\tools'.
Removed file 'EntityFramework.psm1' to folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1\tools'.
Removed file 'init.ps1' to folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1\tools'.
Removed file 'install.ps1' to folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1\tools'.
Removed file 'migrate.exe' to folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1\tools'.
Removed folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1\tools'.
Removed folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1\lib'.
Removed file 'EntityFramework.4.3.1.nupkg' to folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1'.
Removed folder 'C:\Users\JRT3ZHJ\Documents\Visual Studio 2010\Projects\MvcApplication5\packages\EntityFramework.4.3.1'.
Successfully uninstalled 'EntityFramework 4.3.1'.
Install failed. Rolling back...
Install-Package : The method or operation is not implemented.
At line:1 char:16
+ install-package <<<< entityframework -verbose
+ CategoryInfo : NotSpecified: (:) [Install-Package], NotImplementedException
+ FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PowerShell.Commands.InstallPackageCommand
答案 0 :(得分：0)
您使用的是什么版本的NuGet，我最近更新了我的NuGet副本以便使用EntityFramework。我不得不完全卸载NuGet，然后重新安装以使用最新的EntityFramework包，希望这有帮助！