构建项目时出错 - 无法在包文件夹中找到程序集
Error building project - unable to find assemblies in the package folder
我在本地visual studio 2017加载了一个用旧visual studio版本开发的解决方案。有很多外部dll的引用。当我编译解决方案时，尽管 dll 在解决方案的“packages”文件夹下可用，但我仍收到如下错误。解决方案中项目的目标框架设置为.NET Framework 4。我的计算机上安装了.NET Framework 4.7.1。我将不胜感激。
已更新 项目文件
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
<ProductVersion>9.0.30729</ProductVersion>
<SchemaVersion>2.0</SchemaVersion>
<ProjectGuid>{D47A4044-AC8E-49F8-AD93-9D595F594C85}</ProjectGuid>
<OutputType>Library</OutputType>
<AppDesignerFolder>Properties</AppDesignerFolder>
<RootNamespace>Biz</RootNamespace>
<AssemblyName>TakstNettBiz</AssemblyName>
<TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
<FileAlignment>512</FileAlignment>
<SccProjectName>SAK</SccProjectName>
<SccLocalPath>SAK</SccLocalPath>
<SccAuxPath>SAK</SccAuxPath>
<SccProvider>SAK</SccProvider>
<FileUpgradeFlags>
</FileUpgradeFlags>
<OldToolsVersion>3.5</OldToolsVersion>
<UpgradeBackupLocation />
<PublishUrl>publish\</PublishUrl>
<Install>true</Install>
<InstallFrom>Disk</InstallFrom>
<UpdateEnabled>false</UpdateEnabled>
<UpdateMode>Foreground</UpdateMode>
<UpdateInterval>7</UpdateInterval>
<UpdateIntervalUnits>Days</UpdateIntervalUnits>
<UpdatePeriodically>false</UpdatePeriodically>
<UpdateRequired>false</UpdateRequired>
<MapFileExtensions>true</MapFileExtensions>
<ApplicationRevision>0</ApplicationRevision>
<ApplicationVersion>1.0.0.%2a</ApplicationVersion>
<IsWebBootstrapper>false</IsWebBootstrapper>
<UseApplicationTrust>false</UseApplicationTrust>
<BootstrapperEnabled>true</BootstrapperEnabled>
<TargetFrameworkProfile />
<NuGetPackageImportStamp>
</NuGetPackageImportStamp>
</PropertyGroup>
<PropertyGroup>
<StyleCopEnabled>false</StyleCopEnabled>
<StyleCopTreatErrorsAsWarnings>false</StyleCopTreatErrorsAsWarnings>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
<DebugSymbols>true</DebugSymbols>
<DebugType>full</DebugType>
<Optimize>false</Optimize>
<OutputPath>bin\Debug\</OutputPath>
<DefineConstants>DEBUG;TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
<CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
<TreatWarningsAsErrors>true</TreatWarningsAsErrors>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
<DebugType>pdbonly</DebugType>
<Optimize>true</Optimize>
<OutputPath>bin\Release\</OutputPath>
<DefineConstants>TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
<CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
<TreatWarningsAsErrors>true</TreatWarningsAsErrors>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'CIFastBuild|AnyCPU'">
<OutputPath>bin\CIFastBuild\</OutputPath>
<DefineConstants>TRACE</DefineConstants>
<Optimize>true</Optimize>
<TreatWarningsAsErrors>true</TreatWarningsAsErrors>
<DebugType>pdbonly</DebugType>
<PlatformTarget>AnyCPU</PlatformTarget>
<ErrorReport>prompt</ErrorReport>
<CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
</PropertyGroup>
<ItemGroup>
<Reference Include="AutoMapper, Version=3.3.0.0, Culture=neutral, PublicKeyToken=be96cd2c38ef1005, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\AutoMapper.3.3.0\lib\net40\AutoMapper.dll</HintPath>
</Reference>
<Reference Include="AutoMapper.Net4, Version=3.3.0.0, Culture=neutral, PublicKeyToken=be96cd2c38ef1005, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\AutoMapper.3.3.0\lib\net40\AutoMapper.Net4.dll</HintPath>
</Reference>
<Reference Include="Castle.Core, Version=3.2.0.0, Culture=neutral, PublicKeyToken=407dd0808d44fbdc, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\Castle.Core.3.2.2\lib\net40-client\Castle.Core.dll</HintPath>
</Reference>
<Reference Include="Common.Logging">
<HintPath>..\..\packages\Common.Logging.2.1.2\lib\net40\Common.Logging.dll</HintPath>
</Reference>
<Reference Include="EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\EntityFramework.6.0.2\lib\net40\EntityFramework.dll</HintPath>
</Reference>
<Reference Include="EntityFramework.SqlServer">
<HintPath>..\..\packages\EntityFramework.6.0.2\lib\net40\EntityFramework.SqlServer.dll</HintPath>
</Reference>
<Reference Include="FluentMigrator">
<HintPath>..\..\packages\FluentMigrator.1.4.0.0\lib\FluentMigrator.dll</HintPath>
</Reference>
<Reference Include="Magnum">
<HintPath>..\..\packages\Magnum.2.1.3\lib\NET40\Magnum.dll</HintPath>
</Reference>
<Reference Include="MassTransit">
<HintPath>..\..\packages\MassTransit.2.9.9\lib\net40\MassTransit.dll</HintPath>
</Reference>
<Reference Include="MassTransit.Transports.MSMQ">
<HintPath>..\..\packages\MassTransit.MSMQ.2.9.9\lib\net40\MassTransit.Transports.MSMQ.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Data.Edm, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\Microsoft.Data.Edm.5.2.0\lib\net40\Microsoft.Data.Edm.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Data.OData, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\Microsoft.Data.OData.5.2.0\lib\net40\Microsoft.Data.OData.dll</HintPath>
</Reference>
<Reference Include="Microsoft.IdentityModel, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\lib\Microsoft Windows Identity Foundation 3.5\Microsoft.IdentityModel.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="Microsoft.Web.Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>..\..\packages\Microsoft.Web.Infrastructure.1.0.0.0\lib\net40\Microsoft.Web.Infrastructure.dll</HintPath>
</Reference>
<Reference Include="Microsoft.WindowsAzure.Configuration, Version=1.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>..\..\packages\Microsoft.WindowsAzure.ConfigurationManager.1.8.0.0\lib\net35-full\Microsoft.WindowsAzure.Configuration.dll</HintPath>
</Reference>
<Reference Include="Microsoft.WindowsAzure.Storage, Version=2.1.0.3, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\WindowsAzure.Storage.2.1.0.3\lib\net40\Microsoft.WindowsAzure.Storage.dll</HintPath>
</Reference>
<Reference Include="Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\Newtonsoft.Json.6.0.6\lib\net40\Newtonsoft.Json.dll</HintPath>
</Reference>
<Reference Include="Ninject, Version=3.2.0.0, Culture=neutral, PublicKeyToken=c7192dc5380945e7, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\Ninject.3.2.2.0\lib\net40\Ninject.dll</HintPath>
</Reference>
<Reference Include="RestSharp">
<HintPath>..\..\packages\RestSharp.104.2.0\lib\net4\RestSharp.dll</HintPath>
</Reference>
<Reference Include="System" />
<Reference Include="System.ComponentModel.DataAnnotations" />
<Reference Include="System.configuration" />
<Reference Include="System.Core">
<RequiredTargetFramework>3.5</RequiredTargetFramework>
</Reference>
<Reference Include="System.Data" />
<Reference Include="System.Data.Linq" />
<Reference Include="System.Data.Services.Client" />
<Reference Include="System.Drawing" />
<Reference Include="System.EnterpriseServices" />
<Reference Include="System.Runtime.Serialization">
<RequiredTargetFramework>3.0</RequiredTargetFramework>
</Reference>
<Reference Include="System.Security" />
<Reference Include="System.ServiceModel" />
<Reference Include="System.Spatial, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\System.Spatial.5.2.0\lib\net40\System.Spatial.dll</HintPath>
</Reference>
<Reference Include="System.Transactions" />
<Reference Include="System.Web" />
<Reference Include="System.Web.DataVisualization" />
<Reference Include="System.Web.Extensions" />
<Reference Include="System.Web.Helpers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>..\..\packages\Microsoft.AspNet.WebPages.2.0.30506.0\lib\net40\System.Web.Helpers.dll</HintPath>
</Reference>
<Reference Include="System.Web.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>..\..\packages\Microsoft.AspNet.Razor.2.0.30506.0\lib\net40\System.Web.Razor.dll</HintPath>
</Reference>
<Reference Include="System.Web.Services" />
<Reference Include="System.Web.WebPages, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>..\..\packages\Microsoft.AspNet.WebPages.2.0.30506.0\lib\net40\System.Web.WebPages.dll</HintPath>
</Reference>
<Reference Include="System.Web.WebPages.Deployment, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>..\..\packages\Microsoft.AspNet.WebPages.2.0.30506.0\lib\net40\System.Web.WebPages.Deployment.dll</HintPath>
</Reference>
<Reference Include="System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>..\..\packages\Microsoft.AspNet.WebPages.2.0.30506.0\lib\net40\System.Web.WebPages.Razor.dll</HintPath>
</Reference>
<Reference Include="System.Xml" />
<Reference Include="System.Xml.Linq" />
<Reference Include="WebActivatorEx">
<HintPath>..\..\packages\WebActivatorEx.2.0.5\lib\net40\WebActivatorEx.dll</HintPath>
</Reference>
</ItemGroup>
<ItemGroup>
问题是您项目的 hintpath 没有指向解决方案文件夹下 packages 文件夹的正确 dll 路径。
如果 csproj 存在于 proejct 文件夹下，而 packages 文件夹位于文件的上一个文件夹中，则会发生错误。
您应该将 ..\..\ 更改为 ..\。使用正确的路径。
或者在工具-->Nuget包管理器-->包管理器控制台
update-package -reinstall
重新安装所有 nuget 包。
客户的回答
令人尴尬的是，整个问题都与我的解决方案位于本地计算机的解决方案路径有关。我有很长的路要走，包括一个也有两个词的文件夹。在尝试了所有其他方法后，我将解决方案文件夹移至 C:\temp 文件夹，问题不再存在。 VS 中显示的错误具有误导性。真是浪费时间。感谢您的努力！
我在本地visual studio 2017加载了一个用旧visual studio版本开发的解决方案。有很多外部dll的引用。当我编译解决方案时，尽管 dll 在解决方案的“packages”文件夹下可用，但我仍收到如下错误。解决方案中项目的目标框架设置为.NET Framework 4。我的计算机上安装了.NET Framework 4.7.1。我将不胜感激。
已更新 项目文件
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
<ProductVersion>9.0.30729</ProductVersion>
<SchemaVersion>2.0</SchemaVersion>
<ProjectGuid>{D47A4044-AC8E-49F8-AD93-9D595F594C85}</ProjectGuid>
<OutputType>Library</OutputType>
<AppDesignerFolder>Properties</AppDesignerFolder>
<RootNamespace>Biz</RootNamespace>
<AssemblyName>TakstNettBiz</AssemblyName>
<TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
<FileAlignment>512</FileAlignment>
<SccProjectName>SAK</SccProjectName>
<SccLocalPath>SAK</SccLocalPath>
<SccAuxPath>SAK</SccAuxPath>
<SccProvider>SAK</SccProvider>
<FileUpgradeFlags>
</FileUpgradeFlags>
<OldToolsVersion>3.5</OldToolsVersion>
<UpgradeBackupLocation />
<PublishUrl>publish\</PublishUrl>
<Install>true</Install>
<InstallFrom>Disk</InstallFrom>
<UpdateEnabled>false</UpdateEnabled>
<UpdateMode>Foreground</UpdateMode>
<UpdateInterval>7</UpdateInterval>
<UpdateIntervalUnits>Days</UpdateIntervalUnits>
<UpdatePeriodically>false</UpdatePeriodically>
<UpdateRequired>false</UpdateRequired>
<MapFileExtensions>true</MapFileExtensions>
<ApplicationRevision>0</ApplicationRevision>
<ApplicationVersion>1.0.0.%2a</ApplicationVersion>
<IsWebBootstrapper>false</IsWebBootstrapper>
<UseApplicationTrust>false</UseApplicationTrust>
<BootstrapperEnabled>true</BootstrapperEnabled>
<TargetFrameworkProfile />
<NuGetPackageImportStamp>
</NuGetPackageImportStamp>
</PropertyGroup>
<PropertyGroup>
<StyleCopEnabled>false</StyleCopEnabled>
<StyleCopTreatErrorsAsWarnings>false</StyleCopTreatErrorsAsWarnings>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
<DebugSymbols>true</DebugSymbols>
<DebugType>full</DebugType>
<Optimize>false</Optimize>
<OutputPath>bin\Debug\</OutputPath>
<DefineConstants>DEBUG;TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
<CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
<TreatWarningsAsErrors>true</TreatWarningsAsErrors>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
<DebugType>pdbonly</DebugType>
<Optimize>true</Optimize>
<OutputPath>bin\Release\</OutputPath>
<DefineConstants>TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
<CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
<TreatWarningsAsErrors>true</TreatWarningsAsErrors>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'CIFastBuild|AnyCPU'">
<OutputPath>bin\CIFastBuild\</OutputPath>
<DefineConstants>TRACE</DefineConstants>
<Optimize>true</Optimize>
<TreatWarningsAsErrors>true</TreatWarningsAsErrors>
<DebugType>pdbonly</DebugType>
<PlatformTarget>AnyCPU</PlatformTarget>
<ErrorReport>prompt</ErrorReport>
<CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
</PropertyGroup>
<ItemGroup>
<Reference Include="AutoMapper, Version=3.3.0.0, Culture=neutral, PublicKeyToken=be96cd2c38ef1005, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\AutoMapper.3.3.0\lib\net40\AutoMapper.dll</HintPath>
</Reference>
<Reference Include="AutoMapper.Net4, Version=3.3.0.0, Culture=neutral, PublicKeyToken=be96cd2c38ef1005, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\AutoMapper.3.3.0\lib\net40\AutoMapper.Net4.dll</HintPath>
</Reference>
<Reference Include="Castle.Core, Version=3.2.0.0, Culture=neutral, PublicKeyToken=407dd0808d44fbdc, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\Castle.Core.3.2.2\lib\net40-client\Castle.Core.dll</HintPath>
</Reference>
<Reference Include="Common.Logging">
<HintPath>..\..\packages\Common.Logging.2.1.2\lib\net40\Common.Logging.dll</HintPath>
</Reference>
<Reference Include="EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\EntityFramework.6.0.2\lib\net40\EntityFramework.dll</HintPath>
</Reference>
<Reference Include="EntityFramework.SqlServer">
<HintPath>..\..\packages\EntityFramework.6.0.2\lib\net40\EntityFramework.SqlServer.dll</HintPath>
</Reference>
<Reference Include="FluentMigrator">
<HintPath>..\..\packages\FluentMigrator.1.4.0.0\lib\FluentMigrator.dll</HintPath>
</Reference>
<Reference Include="Magnum">
<HintPath>..\..\packages\Magnum.2.1.3\lib\NET40\Magnum.dll</HintPath>
</Reference>
<Reference Include="MassTransit">
<HintPath>..\..\packages\MassTransit.2.9.9\lib\net40\MassTransit.dll</HintPath>
</Reference>
<Reference Include="MassTransit.Transports.MSMQ">
<HintPath>..\..\packages\MassTransit.MSMQ.2.9.9\lib\net40\MassTransit.Transports.MSMQ.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Data.Edm, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\Microsoft.Data.Edm.5.2.0\lib\net40\Microsoft.Data.Edm.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Data.OData, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\Microsoft.Data.OData.5.2.0\lib\net40\Microsoft.Data.OData.dll</HintPath>
</Reference>
<Reference Include="Microsoft.IdentityModel, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\lib\Microsoft Windows Identity Foundation 3.5\Microsoft.IdentityModel.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="Microsoft.Web.Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>..\..\packages\Microsoft.Web.Infrastructure.1.0.0.0\lib\net40\Microsoft.Web.Infrastructure.dll</HintPath>
</Reference>
<Reference Include="Microsoft.WindowsAzure.Configuration, Version=1.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>..\..\packages\Microsoft.WindowsAzure.ConfigurationManager.1.8.0.0\lib\net35-full\Microsoft.WindowsAzure.Configuration.dll</HintPath>
</Reference>
<Reference Include="Microsoft.WindowsAzure.Storage, Version=2.1.0.3, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\WindowsAzure.Storage.2.1.0.3\lib\net40\Microsoft.WindowsAzure.Storage.dll</HintPath>
</Reference>
<Reference Include="Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\Newtonsoft.Json.6.0.6\lib\net40\Newtonsoft.Json.dll</HintPath>
</Reference>
<Reference Include="Ninject, Version=3.2.0.0, Culture=neutral, PublicKeyToken=c7192dc5380945e7, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\Ninject.3.2.2.0\lib\net40\Ninject.dll</HintPath>
</Reference>
<Reference Include="RestSharp">
<HintPath>..\..\packages\RestSharp.104.2.0\lib\net4\RestSharp.dll</HintPath>
</Reference>
<Reference Include="System" />
<Reference Include="System.ComponentModel.DataAnnotations" />
<Reference Include="System.configuration" />
<Reference Include="System.Core">
<RequiredTargetFramework>3.5</RequiredTargetFramework>
</Reference>
<Reference Include="System.Data" />
<Reference Include="System.Data.Linq" />
<Reference Include="System.Data.Services.Client" />
<Reference Include="System.Drawing" />
<Reference Include="System.EnterpriseServices" />
<Reference Include="System.Runtime.Serialization">
<RequiredTargetFramework>3.0</RequiredTargetFramework>
</Reference>
<Reference Include="System.Security" />
<Reference Include="System.ServiceModel" />
<Reference Include="System.Spatial, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\packages\System.Spatial.5.2.0\lib\net40\System.Spatial.dll</HintPath>
</Reference>
<Reference Include="System.Transactions" />
<Reference Include="System.Web" />
<Reference Include="System.Web.DataVisualization" />
<Reference Include="System.Web.Extensions" />
<Reference Include="System.Web.Helpers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>..\..\packages\Microsoft.AspNet.WebPages.2.0.30506.0\lib\net40\System.Web.Helpers.dll</HintPath>
</Reference>
<Reference Include="System.Web.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>..\..\packages\Microsoft.AspNet.Razor.2.0.30506.0\lib\net40\System.Web.Razor.dll</HintPath>
</Reference>
<Reference Include="System.Web.Services" />
<Reference Include="System.Web.WebPages, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>..\..\packages\Microsoft.AspNet.WebPages.2.0.30506.0\lib\net40\System.Web.WebPages.dll</HintPath>
</Reference>
<Reference Include="System.Web.WebPages.Deployment, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>..\..\packages\Microsoft.AspNet.WebPages.2.0.30506.0\lib\net40\System.Web.WebPages.Deployment.dll</HintPath>
</Reference>
<Reference Include="System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>..\..\packages\Microsoft.AspNet.WebPages.2.0.30506.0\lib\net40\System.Web.WebPages.Razor.dll</HintPath>
</Reference>
<Reference Include="System.Xml" />
<Reference Include="System.Xml.Linq" />
<Reference Include="WebActivatorEx">
<HintPath>..\..\packages\WebActivatorEx.2.0.5\lib\net40\WebActivatorEx.dll</HintPath>
</Reference>
</ItemGroup>
<ItemGroup>
问题是您项目的 hintpath 没有指向解决方案文件夹下 packages 文件夹的正确 dll 路径。
如果 csproj 存在于 proejct 文件夹下，而 packages 文件夹位于文件的上一个文件夹中，则会发生错误。
您应该将 ..\..\ 更改为 ..\。使用正确的路径。
或者在工具-->Nuget包管理器-->包管理器控制台
update-package -reinstall
重新安装所有 nuget 包。
客户的回答
令人尴尬的是，整个问题都与我的解决方案位于本地计算机的解决方案路径有关。我有很长的路要走，包括一个也有两个词的文件夹。在尝试了所有其他方法后，我将解决方案文件夹移至 C:\temp 文件夹，问题不再存在。 VS 中显示的错误具有误导性。真是浪费时间。感谢您的努力！