参考：

• http://docs.nuget.org/docs/workflows/using-nuget-without-committing-packages
• http://blog.nuget.org/20120518/package-restore-and-consent.html
• http://stackoverflow.com/questions/11261310/nuget-dont-see-allow-nuget-to-download-missing-packages-during-build

错误：error : Package restore is disabled by default. To give consent, open the Visual Studio Options dialog, click on Package Manager node and check ‘Allow NuGet to download missing packages during build.’ You can also give consent by setting the environment variable ‘EnableNuGetPackageRestore’ to ‘true’.

解决：提示在环境变量中新增一个变量：

EnableNuGetPackageRestore = true

手动改变配置：

1..sln主项目中新增：

Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = ".nuget", ".nuget", "{07BDA4AF-B93E-4F33-9E09-2FCA670A0A98}"
	ProjectSection(SolutionItems) = preProject
		.nuget\NuGet.Config = .nuget\NuGet.Config
		.nuget\NuGet.exe = .nuget\NuGet.exe
		.nuget\NuGet.targets = .nuget\NuGet.targets
	EndProjectSection
EndProject

2.拷贝.nuget目录包含3文件(nuget.config

exe

targets)

3.子项目文件.csproj新增：

<Project ....
  <PropertyGroup>
	**<SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\</SolutionDir>**
	**<RestorePackages>true</RestorePackages>**
  </PropertyGroup>
  **<Import Project="$(SolutionDir)\.nuget\nuget.targets" />**
	.....
</Project>