Routing with multiple Get methods in ASP.NET Web API

Question

I am using Web Api with ASP.NET MVC, and I am very new to it. I have gone through some demo on asp.net website and I am trying to do the following.

I have 4 get meth

Answer 1

using Routing.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;

namespace Routing.Controllers
{
    public class StudentsController : ApiController
    {
        static List<Students> Lststudents =
              new List<Students>() { new Students { id=1, name="kim" },
           new Students { id=2, name="aman" },
            new Students { id=3, name="shikha" },
            new Students { id=4, name="ria" } };

        [HttpGet]
        public IEnumerable<Students> getlist()
        {
            return Lststudents;
        }

        [HttpGet]
        public Students getcurrentstudent(int id)
        {
            return Lststudents.FirstOrDefault(e => e.id == id);
        }
        [HttpGet]
        [Route("api/Students/{id}/course")]
        public IEnumerable<string> getcurrentCourse(int id)
        {
            if (id == 1)
                return new List<string>() { "emgili", "hindi", "pun" };
            if (id == 2)
                return new List<string>() { "math" };
            if (id == 3)
                return new List<string>() { "c#", "webapi" };
            else return new List<string>() { };
        }

        [HttpGet]
        [Route("api/students/{id}/{name}")]
        public IEnumerable<Students> getlist(int id, string name)
        { return Lststudents.Where(e => e.id == id && e.name == name).ToList(); }

        [HttpGet]
        public IEnumerable<string> getlistcourse(int id, string name)
        {
            if (id == 1 && name == "kim")
                return new List<string>() { "emgili", "hindi", "pun" };
            if (id == 2 && name == "aman")
                return new List<string>() { "math" };
            else return new List<string>() { "no data" };
        }
    }
}

Answer 2

I have two get methods with same or no parameters

[Route("api/ControllerName/FirstList")]
[HttpGet]
public IHttpActionResult FirstList()
{
}

[Route("api/ControllerName/SecondList")]
[HttpGet]
public IHttpActionResult SecondList()
{
}

Just define custom routes in AppStart=>WebApiConfig.cs => under register method

config.Routes.MapHttpRoute(
       name: "GetFirstList",
       routeTemplate: "api/Controllername/FirstList"          
       );
config.Routes.MapHttpRoute(
       name: "GetSecondList",
       routeTemplate: "api/Controllername/SecondList"          
       );

Answer 3

Also you will specify route on action for set route

[HttpGet]
[Route("api/customers/")]
public List<Customer> Get()
{
   //gets all customer logic
}

[HttpGet]
[Route("api/customers/currentMonth")]
public List<Customer> GetCustomerByCurrentMonth()
{
     //gets some customer 
}

[HttpGet]
[Route("api/customers/{id}")]
public Customer GetCustomerById(string id)
{
  //gets a single customer by specified id
}
[HttpGet]
[Route("api/customers/customerByUsername/{username}")]
public Customer GetCustomerByUsername(string username)
{
    //gets customer by its username
}

Answer 4

From here Routing in Asp.net Mvc 4 and Web Api

Darin Dimitrov has posted a very good answer which is working for me.

It says...

You could have a couple of routes:

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        config.Routes.MapHttpRoute(
            name: "ApiById",
            routeTemplate: "api/{controller}/{id}",
            defaults: new { id = RouteParameter.Optional },
            constraints: new { id = @"^[0-9]+$" }
        );

        config.Routes.MapHttpRoute(
            name: "ApiByName",
            routeTemplate: "api/{controller}/{action}/{name}",
            defaults: null,
            constraints: new { name = @"^[a-z]+$" }
        );

        config.Routes.MapHttpRoute(
            name: "ApiByAction",
            routeTemplate: "api/{controller}/{action}",
            defaults: new { action = "Get" }
        );
    }
}