关于CheckBoxlist多选，选择一个后会自动退出

2014-06-25 05:41:37 425 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

Android MediaSession与MediaBrowserService实现后台音乐播放与通知控制在Android应用开发中，实现后台音频播放是音乐、播客等媒体应用的核心需求。其技术原理在于通过Service组件托管播放逻辑，使其独立于Activity生命周期，从而保证应用退至后台时播放不中断。为实现这一能力，Android系统提供了MediaSession框架作为标准化解决方案，它扮演着播放器与系统及其他控制端之间的桥梁角色。该框架的技术价值在于统一了媒体控制接口，使得播放状态与命令能够被系统通知栏、锁屏界面、蓝牙设备等外部组件识别和交互。典型的应用场景包括音乐播放器在后台持续运行，并允许用户通过下拉阅读详情

写了一个弹出层CheckBoxlist, 绑定数据没有问题，
错误是：进入CheckBoxList页面后，单击选择一个，就会执行 cblOrderPerson_SelectedIndexChanged一次，然后退出，
百思不得其解，
求指导，调试也没找出错误，
正常情况下，应该是点击一个user，执行cblOrderPerson_SelectedIndexChanged一次，但是不会退出，继续点击下一个，实现多选功能。

如果有更好的办法，请说明，谢了

<asp:CheckBoxList ID="cblOrderPerson" runat="server" RepeatColumns="6" RepeatDirection="Horizontal"

                                 Width="100%" OnSelectedIndexChanged="cblOrderPerson_SelectedIndexChanged" AutoPostBack="True">

                                </asp:CheckBoxList>



protected void SelectPersonItem_Command(object sender, CommandEventArgs e)

        {

            int cooId = this.lstCooName.SelectedValue.ToInteger();

            int cooTypeId = this.lstCooType.SelectedValue.ToInteger();

            WorkOrderPersonConfigLogic workOrderPersonConfigLogic = new WorkOrderPersonConfigLogic();

            if (cooId != 0 && e.CommandName == "SelectPersonItem")

            {

                DataTable dtPersonInfo = workOrderPersonConfigLogic.GetOrderPersonNameByCooTypeIdAndCooId(cooId, cooTypeId);

                if (dtPersonInfo != null && dtPersonInfo.Rows.Count > 0)

                {

                    this.cblOrderPerson.DataSource = dtPersonInfo;

                    this.cblOrderPerson.DataValueField = "USER_ID";

                    this.cblOrderPerson.DataTextField = "PERSON_NAME";

                    this.cblOrderPerson.DataBind();



                    this.lblCooId.Text = cooId.ToString(); ;

                    this.lblCooTypeId.Text = cooTypeId.ToString();

                    this.lblOrderPersonId.Text = "USER_ID";

｝

｝



protected void cblOrderPerson_SelectedIndexChanged(object sender, EventArgs e)

        {

            PageChanged(sender);

        }

        /// <summary>

        /// 选择多个user

        /// </summary>

        /// <param name="sender">功能：对user进行多个选择</param>

        public void PageChanged(object sender)

        {

            //string userIds = this.lblOrderPersonId.Text.Trim();

            this.lblOrderPersonId.Text = "0";

            for (int i = 0; i < cblOrderPerson.Items.Count; i++ )

            {

                if (this.cblOrderPerson.Items[i].Selected == true)

                {

                    this.lblOrderPersonId.Text = this.lblOrderPersonId.Text + cblOrderPerson.Items[i].Value + ",";

                }

            }

        }