How to create webapi in website without MVC Namespace - My First Webapi

 >First you have to add three files in project 1)Global.asax 2) testApiController.cs by adding web api controller class in project(add new item) 3)WebApiConfig.cs file

> Add below code in these files

  Global.asax

void Application_Start(object sender, EventArgs e) 

    {

        // Code that runs on application startup

        YashWebsiteWebForm.WebApiConfig.Register(System.Web.Http.GlobalConfiguration.Configuration);

    }

WebApiConfig.cs

 public static class WebApiConfig

    {

      

        public static void Register(HttpConfiguration config)

        {

            

            config.Routes.MapHttpRoute(

                name: "DefaultApi",

                routeTemplate: "api/{controller}/{id}",    

                defaults: new { id = RouteParameter.Optional }

                );

        }

    }

testApiController.cs

public class testApiController : ApiController

{

    // GET api/values

    //public IEnumerable<string> Get()

    //{

    //    return new string[] { "value1", "value2" };

        

    //}

    public string Get()

    {

        return "Welcome To Web API";

    }

and run the project with localhost:0000/api/testapi

Note if you give file name of controller with abccontroller1.cs than it will give error

if you want to get the value by id than use   localhost:0000/api/testapi/1

Also there are different classes for creating web api eg { (Controller, Controllerbase) These are from System.Web.Mvc namespace}, ApiController.  I am using APIController

routeTemplate: "api/{controller}/{id}",    // This can be change to "webapi/{controller}/{id}" etc.