protected void btnSignIn_Click(object sender, EventArgs e) { int?userId = UserDBHelper.IsCredentialsValid(txtUserName.Text, txtPassword.Text); if (userId != null) { Session["USER"] = txtUserName.Text; Session["USERID"] = userId; if (UserDBHelper.IsUserAdmin(Session["USER"].ToString())) { Session["ISADMIN"] = "1"; Response.Redirect("AdminHome.aspx"); } Response.Redirect("Home.aspx"); } }