Javascript Error : No 'Access-Control-Allow-Origin' header is present on the requested resource

Solution  - Add below code in Global.asax.cs file in API Project

        protected void Application_BeginRequest(object sender, EventArgs e)

        {

            HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "*");

            if (HttpContext.Current.Request.HttpMethod == "OPTIONS")

            {

                HttpContext.Current.Response.AddHeader("Cache-Control", "no-cache");

                HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "GET, POST");

                HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers", "Content-Type, Accept");

                HttpContext.Current.Response.AddHeader("Access-Control-Max-Age", "1728000");

                HttpContext.Current.Response.End();

            }

        }