How to integrate a web api with your project

this is what you need to do

Open NuGet Package manager consol and run

PM> Install-Package Microsoft.AspNet.WebApi
Add references to System.Web.Routing, System.Web.Net and System.Net.Http dlls if not there already
Right click controllers folder > add new item > web > Add Web API controller
Web.config will be modified accordingly by VS
Add Application_Start(){} method if not there already

protected void Application_Start() { //this should be line #1 in this method GlobalConfiguration.Configure(WebApiConfig.Register); }
Add the following class (I added in global.asax.cs file)

public static class WebApiConfig { public static void Register(HttpConfiguration config) { // Web API routes config.MapHttpAttributeRoutes(); config.Routes.MapHttpRoute( name: "DefaultApi", routeTemplate: "api/{controller}/{id}", defaults: new { id = RouteParameter.Optional } ); } }
Modify web api method accordingly

namespace { public class VSController : ApiController { // GET api/ : url to use => api/vs public string Get() { return "Hi from web api controller"; } // GET api//5 : url to use => api/vs/5 public string Get(int id) { return (id + 1).ToString(); } } }
Rebuild and test
Build a simple html page

....

or go to this address for full answers

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Yogie Ngubo8y ago
this is what you need to do
Open NuGet Package manager consol and run

PM> Install-Package Microsoft.AspNet.WebApi
Add references to System.Web.Routing, System.Web.Net and System.Net.Http dlls if not there already
Right click controllers folder > add new item > web > Add Web API controller
Web.config will be modified accordingly by VS
Add Application_Start(){} method if not there already

protected void Application_Start() { //this should be line #1 in this method GlobalConfiguration.Configure(WebApiConfig.Register); }
Add the following class (I added in global.asax.cs file)

public static class WebApiConfig { public static void Register(HttpConfiguration config) { // Web API routes config.MapHttpAttributeRoutes(); config.Routes.MapHttpRoute( name: "DefaultApi", routeTemplate: "api/{controller}/{id}", defaults: new { id = RouteParameter.Optional } ); } }
Modify web api method accordingly

namespace { public class VSController : ApiController { // GET api/ : url to use => api/vs public string Get() { return "Hi from web api controller"; } // GET api//5 : url to use => api/vs/5 public string Get(int id) { return (id + 1).ToString(); } } }
Rebuild and test
Build a simple html page

....
or go to this address for full answers
Sanwar Ranwa8y ago
Hello

please check these Links

https://www.codeproject.com/Articles/772479/Simple-Steps-for-Using-Web-API-in-ASP-NET-Web-Form

https://www.c-sharpcorner.com/article/using-web-api-with-asp-net-web-forms-part-seven/

https://www.codeproject.com/Articles/772479/Simple-Steps-for-Using-Web-API-in-ASP-NET-Web-Form