无法在 Visual Studio 2017 中打开项目答案

【问题标题】：Cannot open the project in Visual Studio 2017无法在 Visual Studio 2017 中打开项目
【发布时间】：2019-02-20 23:56:27
【问题描述】：

我正在尝试在 Visual Studio 2017 版本 15.8.4 中打开一个 Xamarin 项目，但它没有打开，它显示（需要迁移）。

当我尝试重新加载时，它会弹出这个窗口。

当我点击确定按钮时，它会将我重定向到此页面。

当我点击链接时，它会将我重定向到此页面。

https://docs.microsoft.com/en-us/visualstudio/porting/porting-migrating-and-upgrading-visual-studio-projects?view=vs-2015.

我已经浏览了上面的链接，但我无法解决问题。

我可以在 Visual Studio 2015 中打开这个项目。

Visual Studio 2017 关于窗口。

csproj 文件

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
  <PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <ProjectGuid>{D6C2377F-23C1-4998-A72F-622632553B58}</ProjectGuid>
    <OutputType>AppContainerExe</OutputType>
    <AppDesignerFolder>Properties</AppDesignerFolder>
    <RootNamespace>NECMobilePOS.Client.Windows</RootNamespace>
    <AssemblyName>NECMobilePOS.Client.Windows</AssemblyName>
    <DefaultLanguage>en-US</DefaultLanguage>
    <TargetPlatformVersion>8.1</TargetPlatformVersion>
    <MinimumVisualStudioVersion>12</MinimumVisualStudioVersion>
    <FileAlignment>512</FileAlignment>
    <ProjectTypeGuids>{BC8A1FFA-BEE3-4634-8014-F334798102B3};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
    <SccProjectName>SAK</SccProjectName>
    <SccLocalPath>SAK</SccLocalPath>
    <SccAuxPath>SAK</SccAuxPath>
    <SccProvider>SAK</SccProvider>
    <NuGetPackageImportStamp>
    </NuGetPackageImportStamp>
    <AppxAutoIncrementPackageRevision>True</AppxAutoIncrementPackageRevision>
    <AppxPackageDir>bin\Release\</AppxPackageDir>
    <AppxBundlePlatforms>x86</AppxBundlePlatforms>
    <AppxBundle>Auto</AppxBundle>
    <PackageCertificateThumbprint>54D50F2637891A440C3FCC71BB05D56DE984BFC0</PackageCertificateThumbprint>
    <PackageCertificateKeyFile>NECMobilePOS.Client.Windows_TemporaryKey.pfx</PackageCertificateKeyFile>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <PlatformTarget>x86</PlatformTarget>
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>bin\Debug\</OutputPath>
    <DefineConstants>TRACE;DEBUG;NETFX_CORE;WINDOWS_APP;POSTYPE_RESTO;</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <PlatformTarget>AnyCPU</PlatformTarget>
    <DebugType>pdbonly</DebugType>
    <Optimize>true</Optimize>
    <OutputPath>bin\Release\</OutputPath>
    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_APP;POSTYPE_RESTO;</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|ARM'">
    <DebugSymbols>true</DebugSymbols>
    <OutputPath>bin\ARM\Debug\</OutputPath>
    <DefineConstants>TRACE;DEBUG;WINDOWS_APP;POSTYPE_RESTO;</DefineConstants>
    <NoWarn>;2008</NoWarn>
    <DebugType>full</DebugType>
    <PlatformTarget>ARM</PlatformTarget>
    <UseVSHostingProcess>false</UseVSHostingProcess>
    <ErrorReport>prompt</ErrorReport>
    <Prefer32Bit>true</Prefer32Bit>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|ARM'">
    <OutputPath>bin\ARM\Release\</OutputPath>
    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_APP</DefineConstants>
    <Optimize>true</Optimize>
    <NoWarn>;2008</NoWarn>
    <DebugType>pdbonly</DebugType>
    <PlatformTarget>ARM</PlatformTarget>
    <UseVSHostingProcess>false</UseVSHostingProcess>
    <ErrorReport>prompt</ErrorReport>
    <Prefer32Bit>true</Prefer32Bit>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
    <DebugSymbols>true</DebugSymbols>
    <OutputPath>bin\x64\Debug\</OutputPath>
    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_APP</DefineConstants>
    <NoWarn>;2008</NoWarn>
    <DebugType>full</DebugType>
    <PlatformTarget>x64</PlatformTarget>
    <UseVSHostingProcess>false</UseVSHostingProcess>
    <ErrorReport>prompt</ErrorReport>
    <Prefer32Bit>true</Prefer32Bit>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
    <OutputPath>bin\x64\Release\</OutputPath>
    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_APP</DefineConstants>
    <Optimize>true</Optimize>
    <NoWarn>;2008</NoWarn>
    <DebugType>pdbonly</DebugType>
    <PlatformTarget>x64</PlatformTarget>
    <UseVSHostingProcess>false</UseVSHostingProcess>
    <ErrorReport>prompt</ErrorReport>
    <Prefer32Bit>true</Prefer32Bit>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
    <DebugSymbols>true</DebugSymbols>
    <OutputPath>bin\x86\Debug\</OutputPath>
    <DefineConstants>TRACE;DEBUG;NETFX_CORE;WINDOWS_APP;POSTYPE_RESTO;</DefineConstants>
    <NoWarn>;2008</NoWarn>
    <DebugType>full</DebugType>
    <PlatformTarget>x86</PlatformTarget>
    <UseVSHostingProcess>false</UseVSHostingProcess>
    <ErrorReport>prompt</ErrorReport>
    <Prefer32Bit>true</Prefer32Bit>
    <RunCodeAnalysis>false</RunCodeAnalysis>
    <WarningLevel>3</WarningLevel>
    <DocumentationFile>
    </DocumentationFile>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
    <OutputPath>bin\x86\Release\</OutputPath>
    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_APP;POSTYPE_RESTO;</DefineConstants>
    <Optimize>true</Optimize>
    <NoWarn>;2008</NoWarn>
    <DebugType>pdbonly</DebugType>
    <PlatformTarget>x86</PlatformTarget>
    <UseVSHostingProcess>false</UseVSHostingProcess>
    <ErrorReport>prompt</ErrorReport>
    <Prefer32Bit>true</Prefer32Bit>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '12.0' ">
    <VisualStudioVersion>12.0</VisualStudioVersion>
  </PropertyGroup>
  <PropertyGroup>
    <SignAssembly>false</SignAssembly>
  </PropertyGroup>
  <PropertyGroup>
    <DelaySign>false</DelaySign>
  </PropertyGroup>
  <PropertyGroup>
    <AssemblyOriginatorKeyFile>NECMobilePOS.Client.Windows_TemporaryKey.pfx</AssemblyOriginatorKeyFile>
  </PropertyGroup>
  <Import Project="$(MSBuildExtensionsPath)\Microsoft\WindowsXaml\v$(VisualStudioVersion)\Microsoft.Windows.UI.Xaml.CSharp.targets" />
  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
    <PropertyGroup>
      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
    </PropertyGroup>
    <Error Condition="!Exists('..\packages\SQLitePCL.raw.0.8.6\build\win81\SQLitePCL.raw.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\SQLitePCL.raw.0.8.6\build\win81\SQLitePCL.raw.targets'))" />
    <Error Condition="!Exists('..\packages\Xamarin.Forms.2.2.0.45\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Xamarin.Forms.2.2.0.45\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets'))" />
  </Target>
  <Import Project="..\packages\SQLitePCL.raw.0.8.6\build\win81\SQLitePCL.raw.targets" Condition="Exists('..\packages\SQLitePCL.raw.0.8.6\build\win81\SQLitePCL.raw.targets')" />
  <Import Project="..\packages\Xamarin.Forms.2.2.0.45\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets" Condition="Exists('..\packages\Xamarin.Forms.2.2.0.45\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets')" />
  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
       Other similar extension points exist, see Microsoft.Common.targets.
  <Target Name="BeforeBuild">
  </Target>
  <Target Name="AfterBuild">
  </Target>
  -->
</Project>

【问题讨论】：

@Saruman 你的意思是项目文件？它的 .csproj
是的，抱歉没有正确阅读帖子
你安装了 xamarin 吗？即Visual Studio安装程序中的移动开发工具？
我认为是的，这就是为什么我能够创建一个新的 Xamarin 项目并且我能够运行它。我能够在 VS 2015 中打开同一个项目的另一件事......我在安装 VS 2017 时选择了 Xamarin。我是否需要明确安装其他任何东西？
@viveknuna- 你还需要在 Visual Studio 中安装 xamarin.ios 和 windows 包。

标签： c# visual-studio xamarin visual-studio-2017

【解决方案1】：

我找到了问题背后的原因。

我有基于 VS 2015 构建的 Xamarin windows 8.1 应用程序项目。但我试图在 VS 2017 中打开它。VS 2017 不支持 windows 8.1 应用程序，它支持 UWP 应用程序。

所以你有两个选择。

如果您需要手动将 Windows 8.1 应用转换为 UWP 应用只想在 VS 2017 中工作。
只需对 VS 2015 感到满意并开发您的 Windows 8.1 应用即可。

【讨论】：