public void checkmobile() { Object MobileDuplicate = new Object(); MobileDuplicate.Mobile = TxtPhone.Text; DataTable dt = BSLAYER.DuplicateMobile(MobileDuplicate); int r = dt.Rows.Count; if (r < 1) { Panelmsg.Visible = false; Txtotp.Visible = true; generateotp(); SendOtpSms(); Btnotp.Text = "Resend"; Btnverify.Visible = true; //Response.AddHeader("Refresh", "5"); } else { Panelmsg.Visible = true; Txtotp.Visible = false; TxtPhone.Text = ""; TxtPhone.BorderColor = System.Drawing.Color.Red; Btnotp.Enabled = true; } }