page does not redirected using HttpContext.Current.Server.Transfer("transferedPageName.aspx")
<p>I am trying to authenticate my users using their facebook ids. For that I have their facebook id. saved in my database at the time of registration. I am using javascript API of facebook for that and it is working fine brings back user to my site with the user basci information where from .aspx page on success i am using jQuery ajax call</p>

<pre><code>FB.Event.subscribe('auth.statusChange', function (response) {
if (response.authResponse) {                                                                                       FB.api('/me?email?dob', function (me) {                                                   if (me.name) {                                                       
   emid = me.email;
   $.ajax({
           url: 'index.aspx/checkuser',
           type: 'POST',
           contentType: 'application/json',
           data: JSON.stringify({ eid: emid }),
}
})
});
</code></pre>

<p>the above code is on my masterpage.aspx
to a webMethod in my code behind which is a static method </p>

<pre><code>[WebMethod]
    public static void checkuser(string eid)
    {
        checkFBDB objChk = new checkFBDB();
        objChk.isFBIDExists(eid);


    }
</code></pre>

<p>this code is on the content page index.aspx
and within that method i am calling a class function by creating class object 
public class checkFBDB : System.Web.UI.Page
{</p>

<pre><code>    public void isFBIDExists(string fbID)
    {

        string cnString = string.Empty;

        cnString = ConfigurationManager.ConnectionStrings["connectionString"].ToString();

            SqlDataReader dR = SqlHelper.ExecuteReader(cnString,
         CommandType.Text, "SELECT * FROM smsUsers WHERE fbA='" + fbID + "' ");

            if (dR.Read())
            {

                Session["userName"] = dR["userName"].ToString();
                Session["smsCredit"] = int.Parse(dR["SMSCredit"].ToString());
                Session["sender"] = dR["FName"].ToString();
                Session["userMob"] = dR["MobileNo"].ToString();
                HttpContext.Current.Server.Transfer("AuthenticatedForms/sendMessage.aspx");

            }

            else
            {
                HttpContext.Current.Server.Transfer("~/mapFBID.aspx",true);
            }
       }
}
</code></pre>

<p>which opens connections with the database and verifies if the user exists in our DB with the provided facebook id then "HttpContext.Current.Server.Transfer("AuthenticatedForms/sendMessage.aspx");" i am using this statement but the problem is if i use the same statement from a nomral page it transfers fine but from this code class it transfers performs all operations i have seen in debug mode but comes back to the page from where web method has been called which is calling this code class for the transfering of control. I am using master pages. Visual Studio 2010, back end is SQL SERVER 2000. Following is my Code.
Thank You in advance for any assistance.</p>
