ASP.NET

Store Dataset into session variable 

this.Response.Headers.Remove("Server");
 Response.AddHeader("Server", "My httpd server");

<pre>string URL = "http://myserver/ReportServer/Pages/ReportViewer.aspx?%2fbills%2fISU_PDF_GEN_APT&rs:Command=Render";
          string Command = "Render";
          string Format = "PDF";
          //We can get values of these parameters from Request object.
          string Contract_account_number = AccountNumber;
          URL = URL + "&rs:Command=" + Command + "&rs:Format=" + Format + "&Contract_Account_Number=" + Contract_account_number;
           System.Net.HttpWebRequest Req = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(URL);
          Req.Credentials = System.Net.CredentialCache.DefaultCredentials;
          Req.UseDefaultCredentials = true;
          Req.Method = "GET";
          System.Net.WebResponse objResponse = Req.GetResponse();
          System.IO.Stream stream = objResponse.GetResponseStream();
          var document = GenericMethods.StreamToByteArray(stream);
          Response.AddHeader("Content-type", "application/octet-stream");
          Response.AddHeader("Content-Disposition", "attachment; filename=" + AccountNumber + ".pdf");
          Response.BinaryWrite(document);
          Response.Flush();
          Response.End();</pre>

string lbText = ((LinkButton)grvSpeakers.HeaderRow.Cells[i].Controls[0]).Text;

protected void OnSorting(object sender, GridViewSortEventArgs e)
{
    string SortDir = string.Empty;
    DataTable dt = new DataTable();
    dt = ViewState["tables"] as DataTable;
    {
        if (SortDirection == SortDirection.Ascending)
        {
            SortDirection = SortDirection.Descending;
            SortDir = "Desc";
        }
        else
        {
            SortDirection = SortDirection.Ascending;
            SortDir = "Asc";
        }
        DataView sortedView = new DataView(dt);
        sortedView.Sort = string.Format("{0} {1}", e.SortExpression, SortDir);
        grvSpeakers.DataSource = sortedView;
        grvSpeakers.DataBind();
        for (int i = 0; i < grvSpeakers.Columns.Count; i++)
        {
            string lbText = ((LinkButton)grvSpeakers.HeaderRow.Cells[i].Controls[0]).Text;
            if (lbText == e.SortExpression)
            {
                TableCell tableCell = grvSpeakers.HeaderRow.Cells[i];
                System.Web.UI.WebControls.Image img = new System.Web.UI.WebControls.Image();
                img.ImageUrl = (SortDir == "Asc") ? "~/Images/down_arrow.png" : "~/Images/up_arrow.png";
                tableCell.Controls.Add(new LiteralControl(" "));
                tableCell.Controls.Add(img);
            }
        }
    }
}

SortExpression="SpeakerName"