CODEWITHSUNDEEP
c#.netgenericsasp.net-web-api
Dheeraj Kumar
Dheeraj Kumar

Reputation: 4175

How to call a generic WebApi controller?

I am trying to implement a generic API Controller to be used for all models.

public class DefaultController<T> : ApiController
{
    // GET: api/Default
    public IEnumerable<string> Get()
    {
        return new string[] { "value1", "value2" };
    }

    // GET: api/Default/5
    public string Get(int id)
    {
        return "value";
    }
}

When I call localhost:xxxxxx/api/Default. It throws error

No type was found that matches the controller named 'Default'.

Can someone please guide me the correct way to implement.

Also, How do I specify type while calling API?

Thanks.

Upvotes: 0

Views: 2107

Answers (2)

Dabbas
Dabbas

Reputation: 3230

Try inherit from a generic base controller instead. 

public class MyBaseController<T> : ApiController
{
    // GET: api/Default
    public IEnumerable<T> Get()
    {
        return callGenericMethod<T>();
    }
}

And now create as many controller as you want: 

public class DefaultController : MyBaseController<MySpecificType>
{
   //add extra specific methods here or depend on the inherited ones only.
}

And calling the controller will be the same as calling none generic one: 

yourApiPath/Default/Get

Upvotes: 0

SLDev
SLDev

Reputation: 336

If this is your Generic API Controller (Base Controller):

[Route("api/[controller]")]
public class DefaultController<T> : ApiController
{
    // GET: api/{ControllerName}
    [HttpGet]
    public IEnumerable<string> Get()
    {
        return new string[] { "first", "second" };
    }

    // GET: api/{ControllerName}/5
    [HttpGet("{id}")]
    public string Get(int id)
    {
        return "value";
    }
}

You can use the base controller for Posts:

public class PostsController : DefaultController<Post> {}

Or use for others such as Comments:

public class CommentsController : DefaultController<Comment> {}

And you can call controller actions localhost:xxxx/api/posts, localhost:xxxx/api/posts/5, localhost:xxxx/api/comments, localhost:xxxx/api/comments/12

Upvotes: 2

Related Questions