升级Newtonsoft.JSON是否存在任何已知的向后兼容性问题，特别是在我的情况下从4.5.9升级到6.0.8？
答案 0 :(得分：0)
我没有看到与我的任何不兼容问题。我已经从v5.0.8升级到v6.0.8，它运行正常。但我想只是为了检查v4.5.9中的变化，因为我也很好奇。
因此，这是从v4.5.9到v6.0.8的更改列表。
v4.5.10
Change - Improved duplicate object reference id error message
v4.5.11
Change - Silverlight and Windows Phone assemblies in NuGet are strong named again
Change - Improved CamelCasePropertyNamesContractResolver camel casing property names
Change – Explicit JValue conversions are more flexible when converting values
v5.0.1
Change - NaN and Infinity floating point values are serialized as strings by default
Change - Minor breaking changes to JsonSchema type
Change - Upgraded Windows Phone assembly to WP8
Change - DateTime IDictionary keys are now serialized in ISO date format
Change - DataContractAttribute is no longer inherited to match DataConctractSerializer behavior
Change - StringEnumConverter converts empty strings to null for nullable enums
Change - Guids serialize to a binary UUID in BSON instead of a string
Remove - Removed SL4 library
Remove - Removed WP7 library
v5.0.2
Remove - Removed WP8 library
v5.0.3
(Fix)
v5.0.4
Change - Changed .NET 4.5 portable library and WinRT library to use compiled expressions reflection
v5.0.5
Change - Changed some explicit interface methods on JArray to public to support use with ImpromtuInterface
v5.0.6
(New features and fixes)
v5.0.7
Change - Extension data is now written when serializing
v5.0.8
(Fix)
v6.0.1
Change - Changed assembly version to 6.0.0.0
Change - .NET 4 Portable build targets MonoTouch and MonoDroid in NuGet package
Change - .NET 4 Portable build targets WP8 and SL5 instead of WP7 and SL4
Removed - DefaultMemberSearchFlags on DefaultContractResolver is obsolete
Removed - SerializeObjectAsync, DeserializeObjectAsync, PopulateObjectAsync on JsonConvert are obsolete
v6.0.2
(New feature)
v6.0.3
Change - Blank XML elements will be written as an empty string instead of null
Change - JValue with a null value will be written as null instead of empty string
Change - DateFormatString is now used when reading JSON
v6.0.4
Change - Limited integer parsing size to JavaScript integer size
Change - Validation that numbers don't end with an invalid character
v6.0.5
(New features and fixes)
v6.0.6
Change - Omit fields array for F# discriminated union serialization when there are no fields
Change - Escape property names in path on readers/writers/tokens when a name contains special characters
Change - Provide line numbers for end tokens on JTokenReader
v6.0.7
(New features and fixes)
v6.0.8
(New feature and fixes)
我希望这篇文章可以帮助那些决定升级的人。
干杯， 萨姆