Hi,
Passing the DataTable from javaScript to C# is pretty simple by using AjaxPro.dll. Here I code you by using Ajax webmethod that transform the data faster than usual. Before placing the code add the AjaxPro.dll to the Solution and call in the namespace section.

Passing DataTable from Javascript to C#
Aspx Code :

<html >
<head runat="server">
    <title>Pass Datatable from Javascript to C# in Ajax Method </title>
     <script type="text/javascript">
         function ScheduleUpdn()
         {
            var dt = new Ajax.Web.DataTable();
            dt.addColumn("SLNo", "System.String");
            dt.addColumn("Location", "System.String");
            dt.addColumn("TeamLead", "System.String");
            dt.addColumn("Schedule", "System.String");
            dt.addColumn("StartDate", "System.String");
            dt.addColumn("EndDate", "System.String");

            var row = new Object();
            row.SLNo = "1";
            row.Location = "T Nagar";
            row.TeamLead = "Karthick";
            row.Schedule = "meeting";
            row.StartDate = "20-07-2015";
            row.EndDate = "21-07-2015";
            dt.addRow(row);
          
            var returnmessage = MyAPP.WebForm1.SendCuurentRowUpdn(dt);
            alert(returnmessage.value);
            return false;
         }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <input type="button" id="btnajaxpro" value="Click to Pass DataTable from JS to C#" onclick="return ScheduleUpdn();" />
    </div>
    </form>
</body>
</html>

C# Code:

using System;
using System.Web.UI.WebControls;
using AjaxPro;
using System.Data;

namespace MyAPP
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            AjaxPro.Utility.RegisterTypeForAjax(typeof(WebForm1));
        }
        
        [AjaxPro.AjaxMethod]
        public string SendCuurentRowUpdn(DataTable dtschdeduleupdn)
        {
            string ReturnString = "Datatable Successfully Received";
            try
            {
                return ReturnString;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
    }
}

 Add the below code in web.config after completion of system.web


<location path="ajaxpro">
  <system.webServer>
    <handlers>
     <add name="AjaxPro" verb="GET,POST" path="*.ashx" type="AjaxPro.AjaxHandlerFactory,AjaxPro" />
    </handlers>
   </system.webServer>
</location>


Karthik.R