Simple Page Method in asp.net

On May 29

Following is the Code for async PageMethod call in asp.net :

HTML :

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

function asyncmethod() {
PageMethods.set_path('<%=ResolveUrl("~/Default.aspx")%>');
PageMethods.Async_Method("a", OnOk);

//PageMethods.Insert_UserPD(document.getElementById('name').value, strCity, strCity_id, document.getElementById('mob_no').value, document.getElementById('verify_code').value, document.getElementById('email').value, '0', 'Browser', OnOk);

}

function OnOk(response) {
alert(response);
}

</script>

</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true">
</asp:ScriptManager>
<div>
<input id="Button1" type="button" value="button" onclick="asyncmethod()" />

</div>
</form>
</body>
</html>

Code Behind (.cs file) :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page
{
[System.Web.Services.WebMethod()]
[System.Web.Script.Services.ScriptMethod(UseHttpGet = true)]
public static string Async_Method(string p1)
{
return p1+"b";
}
protected void Page_Load(object sender, EventArgs e)
{

}
}

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