REST interface // Newtonsoft.Json.dll // Problem with System.Net.Http

Question

REST interface // Newtonsoft.Json.dll // Problem with System.Net.Http

Markus Freitag 3,791

Hello,

System.Net.Http.Formatting

Newtonsoft.Json.dll

NuGet\Install-Package Newtonsoft.Json -Version 6.0.1

https://www.nuget.org/packages/Newtonsoft.Json/

Messages
//Could not load file or assembly 'Newtonsoft.Json, Version=6.0.0.0'
//A dependency on it was not found. The found manifest definition of the assembly does not match the assembly reference.

//System.IO.FileLoadException: Could not load file or assembly 'Newtonsoft.Json, Version=6.0.0.0, 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)


//Could not load file or assembly 'Newtonsoft.Json, Version=12.0.0.0, Culture=neutral

// I needed for a REST interface.
 response = client.PostAsJsonAsync(urlParameters, p).Result;

I use these two files. Updated on the version 12.0.0 at Newtonsoft.Json.dll

Now I get the error message. Where do I get the correct System.Net.Http.Formatting file?

I suspect this file uses the 6.0.0 and gives a version conflict.

Which tool can I use to see which dlls the current dll contains?

What is the best way to solve it? A Dll does not load a config file, isn't?

Thanks.

/////////// Please note I found this on the net. I use this in my own DLL. I have no App.Config, no Package Config. Or maybe is it possible inside a setting file? But how and who reads the values?

  app.config 
      <dependentAssembly>
          <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
          <bindingRedirect oldVersion="0.0.0.0-9.0.1" newVersion="12.0.1" />
      </dependentAssembly

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="Newtonsoft.Json" version="6.0.1" targetFramework="net472" />
  <package id="System.Net.Http" version="2.0.20126.16343" targetFramework="net472" />
  <package id="System.Net.Http.Formatting.Extension" version="5.2.3.0" targetFramework="net472" />
</packages>

Lan Huang-MSFT 30,186 Reputation points Microsoft External Staff

2023-10-13T05:47:00.48+00:00
Hi @Markus Freitag,

I have no App.Config, no Package Config.

What specific project did you use? Do you have a web.config file in your project?

You need to make sure you have updated or have the correct version by doing the following in the package manager console:

update-package Newtonsoft.Json -reinstall

Delete your bin by enabling viewing the hidden files and deleting the bin folder.

OR removed the following from web.config:

<dependentAssembly> <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" /> </dependentAssembly>

Then Close your Visual Studio and re-open it.
Markus Freitag 3,791 Reputation points

2023-10-14T16:40:06.79+00:00
Hello,

<dependentAssembly> <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" /> </dependentAssembly>

namespace ClassLibraryPrinter { public class STADASystem { } }

I call the containing functions via CLI C++. Do you have a good tip for me? The XML, the configuration redirects this? Who would read that in? How, automatically or by itself?

I only have one class that connects to a Stada system via REST interface.

C++/CLI ----- C# Library (easier to make connection to TEST) ---- Customer system (REST)

Accepted answer

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Your answer

Lan Huang-MSFT 30,186 Reputation points Microsoft External Staff

2023-10-13T05:47:00.48+00:00

Hi @Markus Freitag,

I have no App.Config, no Package Config.

What specific project did you use? Do you have a web.config file in your project?

You need to make sure you have updated or have the correct version by doing the following in the package manager console:

update-package Newtonsoft.Json -reinstall

Delete your bin by enabling viewing the hidden files and deleting the bin folder.

OR removed the following from web.config:

<dependentAssembly> <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" /> </dependentAssembly>

Then Close your Visual Studio and re-open it.
Markus Freitag 3,791 Reputation points

2023-10-14T16:40:06.79+00:00

Hello,

<dependentAssembly> <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" /> </dependentAssembly>

namespace ClassLibraryPrinter { public class STADASystem { } }

I call the containing functions via CLI C++. Do you have a good tip for me? The XML, the configuration redirects this? Who would read that in? How, automatically or by itself?

I only have one class that connects to a Stada system via REST interface.

C++/CLI ----- C# Library (easier to make connection to TEST) ---- Customer system (REST)

Answer 1

Bruce (SqlWork.com) 77,686 Volunteer Moderator

the nuget package System.Net.Http.Formatting was deprecated and removed from nuget for security issues. It should not be used. a replacement is:

Microsoft.AspNet.WebApi.Client

Markus Freitag 3,791 Reputation points

2023-10-14T16:37:43.46+00:00
Hello,

difficult.

I downloaded this.

In this package is the DLL System.Net.Http.Formatting.dll inside.

You mean I should take this one? Everything else remains the same?

https://www.nuget.org/packages/Microsoft.AspNet.WebApi.Client/

NuGet\Install-Package Newtonsoft.Json -Version 13.0.3 NuGet\Install-Package Microsoft.AspNet.WebApi.Client -Version 5.2.9

I do it, is not work. Same error.

NuGet\Install-Package Newtonsoft.Json -Version 6.0.1

NuGet\Install-Package Microsoft.AspNet.WebApi.Client -Version 5.2.9

Works again. New version from System.Net.Http.Formatting.dll and old from json.

Two pictures

//////////////////
Markus Freitag 3,791 Reputation points

2023-10-16T16:35:33.7366667+00:00

@Bruce (SqlWork.com) , thanks.

Question answered. One more request. The System.NET.HTTP.Formatting dll is not old. I can take this. I just need to take these from this package. Am I correct? https://www.nuget.org/packages/Microsoft.AspNet.WebApi.Client/
Minxin Yu 13,501 Reputation points Microsoft External Staff

2023-10-17T08:00:51.6533333+00:00

Hi, glad to know your problem has been solved! Please consider accepting it as an answer to change its status to Answered.

I just need to take these from this package. Am I correct?

Yes. I am able to call the member in namespace Formatting, such as JsonMediaTypeFormatter^ jsonFormatter = gcnew JsonMediaTypeFormatter();. You can try adding dll reference and building the project. Microsoft.AspNet.WebApi.Client is still under support.
Markus Freitag 3,791 Reputation points

2023-10-17T17:22:27.2633333+00:00

ok, thanks!

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REST interface // Newtonsoft.Json.dll // Problem with System.Net.Http

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