无法在Visual Studio 2015 Web API项目中添加nuget程序包

Question

I am not able to add a simple nuget package in Visual Studio 2015 Web API project.

I have Visual Studio 2015 Professional Update 1.

Following are the steps I am following:

1. Created a new ASP .NET Web Application project with "Web API" template from ASP.NET 5 templates.
2. As soon as I get the project created my solution explorer show 2 DNX references. (i) DNX 4.5.1 (ii) DNX Core 5.0
3. Now I right click on project name and click "Manage Nuget Packages".
4. I search for JSON package and I see "Newtonsoft.Json" in the results. And I go ahead and select "Latest stable 8.0.2" version and hit install.

Result: Not able to add package:

And this is one of last few lines in the output window "Unable to locate Dependency Newtonsoft.Json >= 8.0.2"

Errors windows says something different"

Error NU1001 The dependency Newtonsoft.Json >= 6.0.6 could not be resolved.

Would be great if someone can help.

FYI: my project.json looks like this:

Please let me know if there is some more info I should add, I can share all steps screen shots.

Answer 1

I also have been bangin' my head with this for 5 days already.

I have been trying to install the erroneous library using the nuget, both on console and the GUI. Did not work and it made me nuts and go wild. Only to find out, that the solution was to locate the library manually on your local drive located on your users folder, you should find a folder /.dnx/packages

Locate your library on that folder, adding it manually. I'm not sure if this is the case with you, but it worked for me.

Hope this helps.