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I need to load 2 versions of assembly Newtonsoft.Json version 4.0.8.0 and 4.5.0.0. My current config file :
<dependentAssembly> <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-4.0.8.0" newVersion="4.0.8.0" /> </dependentAssembly> but it needs to be: old 4.0.8.0 and new 4.5.0.0
<dependentAssembly> <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-4.0.8.0" newVersion="4.5.0.0" /> </dependentAssembly> I installed Newtonsoft from Package Console - the latest version - but it gives me an error:
Error 80 Could not load file or assembly 'Newtonsoft.Json, Version=4.5.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)**
786
Yet Newtonsoft. Json was basically scrapped by Microsoft with the coming of . NET Core 3.0 in favor of its newer offering designed for better performance, System. Text.
The Newtonsoft. JSON namespace provides classes that are used to implement the core services of the framework. It provides methods for converting between . NET types and JSON types.
Json library is included in the runtime for . NET Core 3.1 and later versions.
I got this problem today, I found the solution in this link.
Basically update the Newtonsoft.Json package. And register this assembly in the web.config
<dependentAssembly> <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" /> <bindingRedirect oldVersion="0.0.0.0-4.5.0.0" newVersion="5.0.8"/> </dependentAssembly> I had the same problem after installing SignalR to my project. First I updated to the latest version of Newtonsoft.Json, and then I add the dependentAssembly to my web.config. But I had to put the value of 6.0.0.0 in the new Version, even if in my packages I have version 6.0.8 declared.
<dependentAssembly> <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed"/> <bindingRedirect oldVersion="0.0.0.0-4.5.0.0" newVersion="6.0.0.0"/> </dependentAssembly> If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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