Problem sending JSON data from JQuery to WCF REST method

Question

I\'m having some trouble getting jquery to post some json data to a rest method I have on my WCF service.

On the WCF side, here\'s the operation contract:

Answer 1

I'll just post a short answer that helped me, because other answers didn't.

• Scenario: ajax call to wcf service.
• Error cause: automatic OPTIONS request from ajax before sending POST request. The first request could not be handled by my service.
• Solution: allow OPTIONS request, and respond to it.

What you need to do:

1. Add this to web.config:

2. Add this to Global.asax.cs (if you don't have this file in your solution, then create it by: Add new item => Visual C# => Global Application Class (default name is "Global.asax")):

   protected void Application_BeginRequest(object sender, EventArgs e)
   {
       if (HttpContext.Current.Request.HttpMethod == "OPTIONS")
                       HttpContext.Current.Response.End();
   }