System.Text.Json not found even though it is part of the project

Asked May 18 '22 at 08:31

Active May 18 '22 at 08:42

Viewed 2,236 times

I have a Winforms project and I have the latest NET6 (currently 6.0.4) version installed.

I'm using RestSharp and when I created the RestClient I get the following exception:

File or Assembly "System.Text.Json, Version=5.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51" not found.

The RestSharp nuget package dependencies show:

In App.config I also having the following bindings:

<dependentAssembly>
    <assemblyIdentity name="System.Text.Json" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-6.0.0.4" newVersion="6.0.0.4" />
</dependentAssembly>

I also tried using Newtonsoft.Json instead as explained here, but I get the same exception above.

Any solution to this problem?

edited May 18 '22 at 08:42

asked May 18 '22 at 08:31

Ivan-Mark Debono

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Is the project built with .NET 6? Do you mean the instantiation of a `RestClient` with "created the RestClient"? – Markus May 18 '22 at 08:56
Also, RestClient is kind of obsolete in .Net 6, isn't it. Do you happen to have upgraded the project to .Net 6 from an older version? – Fildor May 18 '22 at 09:11
The project is NET4.8 but I added NET6 to it. – Ivan-Mark Debono May 18 '22 at 09:22
Did you figure out any solution for this problem? – Sam White Dec 20 '22 at 19:44
I ended up using Flurl instead of RestSharp. – Ivan-Mark Debono Dec 22 '22 at 16:28

System.Text.Json not found even though it is part of the project

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