protected void Button1_Click(object sender, EventArgs e)
        {
            if (dropdownFYear.SelectedIndex != -1 || dropdownSupplier.SelectedIndex != 0 || dropdownWareHouse.SelectedIndex != 0)
            {
                if (from.Text != "" && to.Text != "")
                {
                    if (dropdownSupplier.SelectedIndex != 0 || dropdownWareHouse.SelectedIndex != 0)
                    {
                        if (dropdownWareHouse.SelectedIndex != 0 || dropdownSupplier.SelectedIndex != 0)
                        {
                            DateTime s1 = System.Convert.ToDateTime(from.Text);

                            DateTime Date  = (s1);
                            String   frmdt = Date.ToString("yyyy-MM-dd");

                            DateTime s2 = System.Convert.ToDateTime(to.Text);

                            DateTime date = (s2);
                            String   todt = date.ToString("yyyy-MM-dd");

                            DataTable dt = new DataTable();
                            dt = ddo.BetweenDates(frmdt, todt);


                            rptr.DataSource = dt;
                            rptr.DataBind();
                        }
                        else
                        {
                            DateTime s1 = System.Convert.ToDateTime(from.Text);
                            from.Attributes.Add("ReadOnly", "true");
                            DateTime Date  = (s1);
                            String   frmdt = Date.ToString("yyyy-MM-dd");

                            DateTime s2 = System.Convert.ToDateTime(to.Text);
                            to.Attributes.Add("ReadOnly", "true");
                            DateTime date = (s2);
                            String   todt = date.ToString("yyyy-MM-dd");

                            DataTable dt = new DataTable();
                            dt = ddo.BetweenDates(frmdt, todt);


                            rptr.DataSource = dt;
                            rptr.DataBind();
                        }
                    }
                    else
                    {
                        DateTime s1 = System.Convert.ToDateTime(from.Text);
                        from.Attributes.Add("ReadOnly", "true");
                        DateTime Date  = (s1);
                        String   frmdt = Date.ToString("yyyy-MM-dd");

                        DateTime s2 = System.Convert.ToDateTime(to.Text);
                        to.Attributes.Add("ReadOnly", "true");
                        DateTime date = (s2);
                        String   todt = date.ToString("yyyy-MM-dd");

                        DataTable dt = new DataTable();
                        dt = ddo.BetweenDates(frmdt, todt);


                        rptr.DataSource = dt;
                        rptr.DataBind();
                    }
                }
            }
        }