asp.net在Repeater嵌套的Repeater中使用复选框详解

<%--顶层Repeater--%>        <asp:Repeater ID="rptChannel" runat="server">            <itemtemplate>             <br /><b><%# Eval("ChannelName")%></b>             <%--嵌套的Repeater,指定使用后台创建的Releation来获取数据源--%>              <asp:Repeater ID="rptClassify" DataSource='<%# Eval("myrelation") %>' runat="server">                <itemtemplate>                  <input type="checkbox" id="chk_FlagID" value='<%# Eval("FlagID")%>' runat="server" />                  <asp:Label ID="lbl_FlagName" runat="server" Text='<%# Eval("FlagName")%>'></asp:Label>                </itemtemplate>              </asp:Repeater >             <%--end 嵌套的Repeater,指定使用后台创建的Releation来获取数据源--%>            </itemtemplate>        </asp:Repeater >        <%--end 顶层Repeater--%>

#region Repeater嵌套的Repeater中使用复选框      //★Repeater嵌套-经典运用★      string sqlstr1, sqlstr2;      sqlstr1 = "select distinct a.ChannelID,b.ChannelName from IE_FlagGroup a left join IE_Channel b on a.ChannelID=b.ChannelID where a.isClose=0 order by a.ChannelID asc";      sqlstr2 = "select * from IE_FlagGroup where isClose=0 order by FlagID asc";      DataSet dsChannel = DBFun.dataSetTwo(sqlstr1, "Channel", sqlstr2, "Classify", "myrelation");      dsChannel.Relations.Add("myrelation", dsChannel.Tables["Channel"].Columns["ChannelID"], dsChannel.Tables["Classify"].Columns["ChannelID"], false);      this.rptChannel.DataSource = dsChannel.Tables["Channel"];//绑定顶层Repeater（注意：只要绑定顶层就好，嵌套层不能绑定）      this.rptChannel.DataBind();      #endregion//……略相关数据库操作代码#region 设置Repeater嵌套的Repeater中相应的复选框为选中状态          string[] selTeamflag = drw["Teamflag"].ToString().Split(',');          HtmlInputCheckBox checkBox;          Repeater rpClass;          for (int i = 0; i < this.rptChannel.Items.Count; i++)          {            rpClass = (Repeater)this.rptChannel.Items[i].FindControl("rptClassify");            for (int j = 0; j < rpClass.Items.Count; j++)            {              checkBox = (HtmlInputCheckBox)rpClass.Items[j].FindControl("chk_FlagID");              if (selTeamflag.Contains(checkBox.Value))                checkBox.Checked = true;            }          }          #endregion#region 获取Repeater嵌套的Repeater中的复选框所选择的值的组合,以","隔开    string str_Teamflag = "";    HtmlInputCheckBox checkBox;    Repeater rpClass;    for (int i = 0; i < this.rptChannel.Items.Count; i++)    {      rpClass = (Repeater)this.rptChannel.Items[i].FindControl("rptClassify");      for (int j = 0; j < rpClass.Items.Count; j++)      {        checkBox = (HtmlInputCheckBox)rpClass.Items[j].FindControl("chk_FlagID");        if (checkBox.Checked)          str_Teamflag += checkBox.Value + ",";      }    }    if (str_Teamflag != "")    {      //去除最后一个字符      //str_Teamflag = str_Teamflag.Substring(0, str_Teamflag.Length - 1);      str_Teamflag = str_Teamflag.Remove(str_Teamflag.Length - 1);    }    #endregion