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