//submit data void but1_Click(object sender, EventArgs e) { String error = String.Empty; Control con1 = JControl.CheckControls(new Control[] { this.pass1, this.pass2, this.oldpass }, out error); if (con1 != null) { UTools.AlertAndFocusControl(error, con1.ClientID); } else { JUserBU bu1 = new JUserBU(); error = bu1.ChangeOldPassWord(this.oldpass.Text, this.pass1.Text); if (String.IsNullOrEmpty(error)) { UTools.Alert("提示:密码修改成功,下次登录生效!"); } else { UTools.Alert(error); } } }