protected void btLogin_Click(object sender, EventArgs e) { string sUserID = txtMid.Text; string sPwd = txtMpwd.Text; if (string.IsNullOrEmpty(sUserID) == false && string.IsNullOrEmpty(sPwd) == false) { DataTable users = AdminUsers.SearchAdminUser(sUserID, sPwd); if (users.Rows.Count > 0) { Session["ADMIN_USERID"] = users.Rows[0]["UserID"].ToString(); Session["ADMIN_USERLEVEL"] = users.Rows[0]["UserLevel"].ToString(); Response.Redirect("Default.aspx"); } else { //RegisterStartupScript("", "<script>alert(' Incorrect password or ID ')</script>"); ClientScript.RegisterStartupScript(GetType(), "", "<script>alert(' Incorrect password or ID ')</script>"); } } else { //RegisterStartupScript("", "<script>alert(' Incorrect password or ID ')</script>"); ClientScript.RegisterStartupScript(GetType(), "", "<script>alert(' Incorrect password or ID ')</script>"); } }