Method not found: 'System.Net.Http.HttpRequestMessage System.Web.Http.Controllers.HttpActionContext.get_Request()'

Question

I have created One Filter Attribute

public class AuthFilterAttribute : System.Web.Http.Filters.ActionFilterAttribute { public AuthFilterAttribute() { } public override void OnActionExecuting(System.Web.Http.Controllers.HttpActionContext actionContext) { } }

I have registered this filter inside the global.asax.cs.

When I am trying to call my web API using Postman it is showing the error:

Method not found: 'System.Net.Http.HttpRequestMessage System.Web.Http.Controllers.HttpActionContext.get_Request()'.

My project target framework is 4.6.1 and the System.Net.Http version is 4.2.0.0

My API looks like this:

[AuthFilter] public class ScheduleApiController : BaseApiController { [Route("api/v1/schedules")] [HttpGet] public IHttpActionResult GetSchedules() { } }

I know this question has been asked before but none of the solutions worked for me.

Please help me to resolve this issue.

Please add the url with which your are trying to call from postman — Sulay Shah
– Sulay Shah, Commented Apr 11, 2018 at 6:51
I am trying to run in the local host Url is :localhost:54252/api/v1/schedules — Ankur Gupta
– Ankur Gupta, Commented Apr 11, 2018 at 7:11
Try removing [AuthFilter] .an make sure you have config.MapHttpAttributeRoutes(); in WebApiConfig — Sulay Shah
– Sulay Shah, Commented Apr 11, 2018 at 7:21
You can also try the default help that is available when you create new web api project.Try accessing localhost:54252/help — Sulay Shah
– Sulay Shah, Commented Apr 11, 2018 at 7:25
Do you have this file also at this location:C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Microsoft\Microsoft.NET.Build.Extensions\net461\lib If so, try deleting/renaming it. — Peter Bons
– Peter Bons, Commented Apr 11, 2018 at 8:12

Kiloh · Accepted Answer · 2018-07-19 12:22:08Z

29

Are you referencing a .NET Standard Library by any chance. I ran into this problem and solved it with a Binding Redirect:

 <dependentAssembly> <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.2.0.0" /> </dependentAssembly>

answered Jul 19, 2018 at 12:22

Kiloh

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4 Comments

user1689716 Over a year ago

This worked for me, I was using Standard 2.0 for dlls and Framework 4.7 for web api.

mituw16 Over a year ago

Saved my bacon!

aadi1295 Over a year ago

WTF why didn't publish wizard automatically added it in web.config?

Phate01 Over a year ago

After 6 hours this fixed the issue

Christian Nikolov · Accepted Answer · 2020-10-22 09:06:18Z

You could try to enable the auto-generate bindings. Right Click on your project --> Properties --> Application

Tick that

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