将Json.Net安装到针对Windows Phone 7的项目时出错

Question

我尝试使用命令install-package newtonsoft.json通过NuGet安装Json.Net。

我得到了如下所示的错误。我该如何解决这个问题？

Install-Package Newtonsoft.Json 
Installing 'Newtonsoft.Json 6.0.6'. 
Successfully installed 'Newtonsoft.Json 6.0.6'. 
Removing 'Newtonsoft.Json 6.0.3' from ReadJSON. 
Successfully removed 'Newtonsoft.Json 6.0.3' from ReadJSON. 
Adding 'Newtonsoft.Json 6.0.6' to ReadJSON. 
Uninstalling 'Newtonsoft.Json 6.0.6'. 
Successfully uninstalled 'Newtonsoft.Json 6.0.6'. 
Install failed. Rolling back... 
Install-Package : Could not install package 'Newtonsoft.Json 6.0.6'. You are trying to install this package into a project that 
targets 'Silverlight,Version=v4.0,Profile=WindowsPhone71', but the package does not contain any assembly references or content files 
that are compatible with that framework. For more information, contact the package author. 
At line:1 char:1 
+ Install-Package Newtonsoft.Json 
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
    + CategoryInfo   : NotSpecified: (:) [Install-Package], InvalidOperationException 
    + FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PowerShell.Commands.InstallPackageCommand 

Answer 1

支持Windows Phone 7和Silverlight 4中从Json.Net在6.0版本（source）去除。如果你仍然需要定位WP7/SL4，那么你需要使用Json.Net v5.0.8。您可以在软件包管理器控制台中使用以下命令来安装此软件：

Install-Package Newtonsoft.Json -Version 5.0.8