config.MapODataServiceRoute error

Question

I am currently following this guide -> Link to asp.net website

As the guide says I added all the necessary packages via the nuget console and added the necessary usings

Answer 1

I just had this problem. Very frustrating.

I resolved it by adding this in the references at the top of the code page

using System.Web.OData.Extensions;

Right clicking the method did not bring up the resolve menu item either.

Reinstalling everything did no resolve anything for me.

Answer 2

I fixed this by opening the package manager console, setting the default project to the project that gave the error message, and then:

Install-Package Microsoft.AspNet.WebApi.OData

Answer 3

MapODataServiceRoute is available in Routes Collection, hence below code will do

config.Routes.MapODataServiceRoute(
"odata",
 null, 
GetEdmModel(), 
new DefaultODataBatchHandler(GlobalConfiguration.DefaultServer));

Answer 4

FOR OData V3

1. Install Microsoft.AspNet.WebApi.OData
2. Add using System.Web.Http.OData.Builder; and using System.Web.Http.OData.Extensions;
3. use like config.Routes.MapODataServiceRoute(...)

FOR OData V4

1. Install Microsoft.AspNet.OData
2. Add using System.Web.OData.Builder; and using System.Web.OData.Extensions;
3. use like config.MapODataServiceRoute(...)

Dont get stuck on WebApi word, they are both for web api.

Answer 5

MapODataServiceRoute is extension method. So to use it a reference to its namespace is required. For me it was fixed by referencing:

using System.Web.Http.OData.Extensions;

Answer 6

If you have upgraded to Microsoft.AspNet.OData 7.0.0 then the namespace you are looking for is:

using Microsoft.AspNet.OData.Extensions;