Archives / 2012 / February
  • Json.NET 4.0 Release 8 – Bug fixes

    This is a relatively minor release that fixes all outstanding bugs and adds a couple of enhancements.

    NuGet Silverlight/Windows Phone Assemblies No Longer Strong-Named

    The big change this release is that the Silverlight/Windows Phone NuGet assemblies are no longer strong-named.

    Unfortunately Silverlight/Windows Phone applications do not support redirecting strong-named assemblies like normal .NET apps do via <assemblyBinding> configuration. If a Silverlight or Windows Phone application uses two libraries that each reference a different version of Json.NET then the only solution is to get the source code for the libraries and recompile them yourself to use the same version of Json.NET – not ideal.

    From 4.0.8 the NuGet assemblies for Silverlight/Windows Phone are no longer strong-named. If you do need strong-named versions of Json.NET for SL/WP then they are still available in the Json.NET zip download from CodePlex in the Bin\Silverlight\Signed and Bin\WindowsPhone\Signed zip folders. I don’t recommend using them with reusable SL/WP libraries because of the reasons above.

    Json.NET Assembly Redirection

    In case you ever do end up with multiple libraries that reference different versions of Json.NET in a normal .NET application, here is the configuration to fix your application use one version of Json.NET:

          <assemblyIdentityname="Newtonsoft.Json"publicKeyToken="30ad4fe6b2a6aeed" />
          <bindingRedirectoldVersion=""newVersion="" />

    Update newVersion as needed to the version of Json.NET you are using. This can be found in Visual Studio by right-clicking on Newtonsoft.Json reference and selecting Properties.

    Mr. Simpson, you're smarter than you look, or sound, or our best testing indicates.


    Here is a complete list of what has changed since Json.NET 4.0 Release 6 (if you’re curious where v7 is, it was a minor release to fix a couple of urgent bugs).

    • New feature - Added VersionConverter for System.Version
    • New feature - Added a JSON schema IsValid overload that returns a list of error messages
    • Change - NuGet Silverlight/Windows Phone assembies are no longer strong-named
    • Fix - Fixed Json.NET attributes on nullable struct properties not being used
    • Fix - Fixed deserializing nullable enums
    • Fix - Fixed JsonConstructor incorrectly being allowed on properties
    • Fix - Fixed empty string being changed to null when deserializing object properties
    • Fix - Fixed not replacing ignored properties when resolving an object's contract
    • Fix - Fixed JsonReader.ReadAsDateTimeOffset throwing an incorrect error message
    • Fix - Fixed error when converting XML to JSON with a default namespace
    • Fix - Fixed JsonValidatingReader.ReadAsBytes throwing an exception
    • Fix - Fixed a unit test failing because of the running computer’s timezone


    Json.NET CodePlex Project

    Json.NET 4.0 Release 8 Download – Json.NET source code, documentation and binaries