protected void LinkBtnExportExcel_Click(object sender, EventArgs e)
        {
            try
            {
                System.Threading.Thread.Sleep(2000);
                Response.Clear();
                Response.Buffer = true;
                Response.ClearContent();
                Response.ClearHeaders();
                Response.Charset = "";
                string         FileName       = "SaleList.xls";
                StringWriter   strwritter     = new StringWriter();
                HtmlTextWriter htmltextwrtter = new HtmlTextWriter(strwritter);
                Response.Cache.SetCacheability(HttpCacheability.NoCache);
                Response.ContentType = "application/vnd.ms-excel";
                Response.AddHeader("Content-Disposition", "attachment;filename=" + FileName);

                GV_SAL.GridLines             = GridLines.Both;
                GV_SAL.HeaderStyle.Font.Bold = true;

                GV_SAL.RenderControl(htmltextwrtter);

                Response.Write(strwritter.ToString());
                Response.End();
            }
            catch (Exception ex)
            {
                throw;
                //ScriptManager.RegisterStartupScript(this, this.GetType(), "isActive", "Alert();", true);
                //lblalert.Text = ex.Message;
            }
        }
        private void get_sal(string Fdat, string Ldat)
        {
            using (SqlCommand cmd = new SqlCommand())
            {
                cmd.CommandText = "select * from v_rptSal where  Saldat between '" + Fdat + "' and '" + Ldat + "' and CompanyId = '" + Session["CompanyID"] + "' and BranchId= '" + Session["BranchID"] + "'";
                //cmd.CommandText = "select * from v_rptDSal where  Saldat between '" + Fdat + "' and '" + Ldat + "'";
                cmd.Connection = con; //
                con.Open();

                DataTable      dtsal = new DataTable();
                SqlDataAdapter adp   = new SqlDataAdapter(cmd);
                adp.Fill(dtsal);

                if (dtsal.Rows.Count > 0)
                {
                    GV_SAL.DataSource = dtsal;
                    GV_SAL.DataBind();
                    //Get Total

                    double GTotal  = 0;
                    double QGTotal = 0;
                    // Total
                    for (int j = 0; j < GV_SAL.Rows.Count; j++)
                    {
                        Label total = (Label)GV_SAL.Rows[j].FindControl("lbl_GTtl");
                        GTotal += Convert.ToDouble(total.Text);
                    }

                    //Quantity
                    for (int j = 0; j < GV_SAL.Rows.Count; j++)
                    {
                        Label totalqty = (Label)GV_SAL.Rows[j].FindControl("lbl_Qty");
                        QGTotal += Convert.ToDouble(totalqty.Text);
                    }
                    ttl_qty.Text = QGTotal.ToString();
                    lbl_ttl.Text = GTotal.ToString();
                }
                con.Close();
            }
        }
        private void get_sal(string dsrdat)
        {
            using (SqlCommand cmd = new SqlCommand())
            {
                cmd.CommandText = "select * from v_dsr where  billdat = '" + dsrdat + "'";
                cmd.Connection  = con;
                con.Open();

                DataTable      dtsal = new DataTable();
                SqlDataAdapter adp   = new SqlDataAdapter(cmd);
                adp.Fill(dtsal);

                if (dtsal.Rows.Count > 0)
                {
                    GV_SAL.DataSource = dtsal;
                    GV_SAL.DataBind();
                    //Get Total

                    double GTotal  = 0;
                    double QGTotal = 0;
                    // Total
                    for (int j = 0; j < GV_SAL.Rows.Count; j++)
                    {
                        Label total = (Label)GV_SAL.Rows[j].FindControl("lbl_amt");
                        GTotal += Convert.ToDouble(total.Text);
                    }

                    //Quantity
                    for (int j = 0; j < GV_SAL.Rows.Count; j++)
                    {
                        Label totalqty = (Label)GV_SAL.Rows[j].FindControl("lbl_Qty");
                        QGTotal += Convert.ToDouble(totalqty.Text);
                    }
                    ttl_qty.Text = QGTotal.ToString();
                    lbl_ttl.Text = GTotal.ToString();
                }
                con.Close();
            }
        }