Convert from HttpResponseMessage to IActionResult in .NET Core

Question

I'm porting over some code that was previously written in .NET Framework to .NET Core.

I had something like this:

HttpResponseMessage result = await client.SendAync(request);
if (result.StatusCode != HttpStatusCode.OK)
{
    IHttpActionResult response = ResponseMessage(result);
    return response;
}

The return value of this function is now IActionResult.

How do I take the HttpResponseMessage result object and return an IActionResult from it?

Answer 1

You can return using hardset status codes like Ok(); or BadRequest();

Or return using a dynamic one using

StatusCode(<Your status code number>,<Optional return object>);

This is using Microsoft.AspNetCore.Mvc

Below is this.StatusCode spelled out a little more:

/* "this" comes from your class being a subclass of Microsoft.AspNetCore.Mvc.ControllerBase */
StatusCodeResult scr = this.StatusCode(200);
/* OR */
Object myObject = new Object();
ObjectResult ores = this.StatusCode(200, myObject);
return scr; /* or return ores;*/

Answer 2

You should be able to migrate your existing code into ASP.NET Core 2.x by using Microsoft.AspNetCore.Mvc.WebApiCompatShim nuget package.

Then you may do:

return new ResponseMessageResult(result);

Or, as an alternative, you may inherit your Controller from ApiController and leave your code as is:

public class MyController : ApiController 
{
    public IActionResult Get()
    {
        // other code...
        HttpResponseMessage result = await client.SendAync(request);
        if (result.StatusCode != HttpStatusCode.OK)
        {
            IActionResult response = ResponseMessage(result);
            return response;
        }
        // other code...
    }    
}

More information inside the official documentation