gridview not visible;(.. no errors

private void BindDates()
        {

            DateTime FromDate = DateTime.Now.ToUniversalTime().AddHours(5.5);

            TxtFromDate.Text = FromDate.ToString("yyyy/MM/dd");

            DateTime ToDate = DateTime.Now.ToUniversalTime().AddHours(5.5);

            TxtToDate.Text = ToDate.ToString("yyyy/MM/dd");

        }
        protected void databind()
        {
            string[] strFromDate = TxtFromDate.Text.Split('/');
            string[] strToDate = TxtToDate.Text.Split('/');

            DateTime fromDate = Convert.ToDateTime(strFromDate[1] + '/' + strFromDate[2] + '/' + strFromDate[0]);
            DateTime toDate = Convert.ToDateTime(strToDate[1] + '/' + strToDate[2] + '/' + strToDate[0]);
            con.Open();
            MySqlCommand com = new MySqlCommand("SELECT * FROM processeddata_table WHERE dialdate BETWEEN '" + fromDate + "' AND '" + toDate + "' ", con);
            {
                DataTable ds = new DataTable();
                MySqlDataAdapter da = new MySqlDataAdapter(com);
                da.Fill(ds);
                GridView1.DataSource = ds;
                GridView1.DataBind();
                con.Close();
                da.Dispose();
                ds.Dispose();
            }
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            databind();
        }
    }