VS2008 新建项目提示无法识别工具版本3.5
将下列代码保存为.reg，导入注册表即可
代码
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSBuild]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSBuild\3.5]
"DefaultToolsVersion"="2.0"
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSBuild\ToolsVersions]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSBuild\ToolsVersions\2.0]
"MSBuildToolsPath"="C:\\WINDOWS\\Microsoft.NET\\Framework\\v2.0.50727\\"
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSBuild\ToolsVersions\3.5]
"MSBuildToolsPath"="C:\\WINDOWS\\Microsoft.NET\\Framework\\v3.5\\"
