How to create lightweight page on mobile browser?

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ASP.NET

Ajax

I wrote a code that depends on one text file. This file stores data.
I read this file & get details from it, bind it to GridView. This all process is in page_load event.
Please tell me how can i create lightweight page when page load event is called using scriptmanager & updatepanel for Gridview. Please help.

Code is in Page Load Event:-----

AddressBookSearch AddressSearch = new AddressBookSearch();
string mStr = AddressSearch.GetData();
Dt = AddressSearch.processAllDetails(mStr);
try
{
   if (Dt.Rows.Count > 0 && Dt != null)
   {
     TempDt.Columns.Add("Name");
     TempDt.Columns.Add("NameUrl");
     foreach (DataRow Dr in Dt.Rows)
     {
       DataRow TempDr = TempDt.NewRow();
       if (string.IsNullOrEmpty(Dr["Title"].ToString().Trim() + Dr["First Name"].ToString().Trim() + Dr["Middle Name"].ToString().Trim() + Dr["Last Name"].ToString().Trim()) == true)
       {
         TempDr["Name"] = "(UnName)";
       }
       else
       {
         TempDr["Name"] = Dr["Title"].ToString().Trim() + " " + Dr["First Name"].ToString().Trim() + " " + Dr["Middle Name"].ToString().Trim() + " " + Dr["Last Name"].ToString().Trim();
       }
       TempDr["NameUrl"] = "Demo.aspx?Index=" + Dr["Index"].ToString();
       TempDt.Rows.Add(TempDr);
    }
    DataView TempDv = new DataView(TempDt, "", "Name", DataViewRowState.CurrentRows);
    GridView1.DataSource = TempDt = TempDv.ToTable();
    GridView1.DataBind();
}
catch{}

this code takes 352kb when i have 200 contacts i'm to see...& allowed for gridview paging.

Any help for that code to reduce kb on mobile browser.....
Please help me for that

regards