Could not add Access-Control-Allow-Origin to my WCF library Project

Question

I\'m trying to understand why this ajax called doesn\'t work

 $.ajax({
        type: \'GET\',
        url: \"http://localhost:8732/Design_Time_Addresses/InMotion         


        

Answer 1

I was getting the same problem when working with my WCF service directly in Visual Studio, in Chrome and Firefox. I fixed it with the following:

Edit the Global.asax file with below function:

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

                if (HttpContext.Current.Request.HttpMethod == "OPTIONS")
                {
                    HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "GET, POST");
                    HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers", "Content-Type, Authorization, Accept");
                    HttpContext.Current.Response.End();
                }
            }

Then call the function from

    protected void Application_BeginRequest(object sender, EventArgs e)
    {
       EnableCrossDomainAjaxCall();
    }

You can get more information from the following url:

http://blog.blums.eu/2013/09/05/restfull-wcf-service-with-cors-and-jquery-and-basic-access-authentication.