How do we determine whether we are using Web API 1 or Web API 2?

Question

Introduce the problem

I would like to know whether we are using Web API 1 or 2. My own packages.config indicates version 5.0.0. Is that Web API 1 or 2?

Search, and research

I have tried Googling the following:

"web api 1" "web api 2"

and

ASP.NET Web API release history

and

ASP.NET Web API nuget

The best references seem to be these two nuget pages:

ASP.NET Web API Nuget seems to indicate that anything 4.* is Web API 1,
Microsoft ASP.NET Web API 2.1 Nuget that anything 5.* is Web API 2.

Is that right? How would I know for sure?

Install-Package Microsoft.AspNet.WebApi -Version 5.2.7 reference nuget.org/packages/Microsoft.AspNet.WebApi — Pranesh Janarthanan
– Pranesh Janarthanan, Commented Apr 13, 2019 at 4:23

John · Accepted Answer · 2014-09-18 12:59:26Z

30

I think what you found seems correct. I had the same question then I had a look under my installed packages when you go "Manage Nuget packages". There was an item installed with the name "Microsoft ASP.NET WEB API 2.2". So I was able to determine my own version from there.

answered Sep 18, 2014 at 12:59

John

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2 Comments

bob.mazzo Over a year ago

in VS2015, you can check packages.config file for version.

soniiic Over a year ago

The title of the package on NuGet shows the version number: nuget.org/packages/Microsoft.AspNet.WebApi

SerjG · Accepted Answer · 2015-09-09 20:23:08Z

20

I'm not sure what @John meant with the package name above. I'm having the following package right now:

Microsoft.AspNet.WebApi.5.2.3

Based on this article http://www.asp.net/web-api/overview/releases/whats-new-in-aspnet-web-api-22 I assume that starting from the package version 5.2.2 it's Web API 2.2 version.

answered Sep 9, 2015 at 20:23

SerjG

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2 Comments

The One Over a year ago

I hate that, you check the packages file and it says it's version 5 but actually is version 2, I hate this versions hell

Andrew Over a year ago

The article: "The latest ASP.NET Web API 2.2 package has the following version: '5.2.0'"

RBT · Accepted Answer · 2017-11-24 11:33:21Z

15

I always try this instead -

In the controller make a method

public IHttpActionResult MyResult(){
    return Ok();
}

If you get compilation error then it is API 1.0.

If no compilation error then you are referencing API 2.0.

edited Nov 24, 2017 at 11:33

RBT

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answered Jun 27, 2015 at 13:55

Newton Sheikh

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