在Repeter中用RadioButton生成单选按钮组的实现

我们在运用Repeter绑定数据到RadioButton在前台生成单选按钮组的时候，我们可能会遇到生成的按钮并不能实现单选这种情况，即使你设置了GroupName属性，也不会起作用。这时我们就要借助于我们强大的JS了。代码如下：

前台Repeter部分代码：

<asp:Repeater ID="RepeaterYM" runat="server">
                        <ItemTemplate>
                            <li>
                                <asp:RadioButton ID="Year" Text='<%#Eval("Years")%>' runat="server" GroupName="Year"
                                    ClientIDMode="Static" onclick="selectSingleRadio(this,'Year');" />年<asp:DropDownList
                                        ID="MonthList" name="Month" Width="120" runat="server" ClientIDMode="Static">
                                        <asp:ListItem>全部</asp:ListItem>
                                    </asp:DropDownList>
                            </li>
                        </ItemTemplate>
                    </asp:Repeater>

生成的单选按钮组源码及Dome：

  <ul>
                     
                            <li>
                                <input id="Year" type="radio" name="RepeaterYM$ctl00$Year" value="Year" onclick="selectSingleRadio(this,'Year');" /><label for="Year">2001</label>年<select name="RepeaterYM$ctl00$MonthList" id="MonthList" name="Month" style="width:120px;">
    <option value="0">全部</option>
    <option value="10">10月</option>
  
</select>
                            </li>
                         
                            <li>
                                <input id="Year" type="radio" name="RepeaterYM$ctl01$Year" value="Year" onclick="selectSingleRadio(this,'Year');" /><label for="Year">2005</label>年<select name="RepeaterYM$ctl01$MonthList" id="MonthList" name="Month" style="width:120px;">
    <option value="0">全部</option>
    <option value="6">6月</option>
  
</select>
                            </li>
                         
                            <li>
                                <input id="Year" type="radio" name="RepeaterYM$ctl02$Year" value="Year" onclick="selectSingleRadio(this,'Year');" /><label for="Year">2006</label>年<select name="RepeaterYM$ctl02$MonthList" id="MonthList" name="Month" style="width:120px;">
    <option value="0">全部</option>
    <option value="2">2月</option>
    <option value="3">3月</option>
    <option value="5">5月</option>
    <option value="6">6月</option>
    <option value="12">12月</option>
  
</select>
                            </li>
                         
                            <li>
                                <input id="Year" type="radio" name="RepeaterYM$ctl03$Year" value="Year" onclick="selectSingleRadio(this,'Year');" /><label for="Year">2007</label>年<select name="RepeaterYM$ctl03$MonthList" id="MonthList" name="Month" style="width:120px;">
    <option value="0">全部</option>
    <option value="11">11月</option>
  
</select>
                            </li>
                         
                            <li>
                                <input id="Year" type="radio" name="RepeaterYM$ctl04$Year" value="Year" onclick="selectSingleRadio(this,'Year');" /><label for="Year">2008</label>年<select name="RepeaterYM$ctl04$MonthList" id="MonthList" name="Month" style="width:120px;">
    <option value="0">全部</option>
    <option value="1">1月</option>
    <option value="6">6月</option>
  
</select>
                            </li>
                         
                            <li>
                                <input id="Year" type="radio" name="RepeaterYM$ctl05$Year" value="Year" onclick="selectSingleRadio(this,'Year');" /><label for="Year">2009</label>年<select name="RepeaterYM$ctl05$MonthList" id="MonthList" name="Month" style="width:120px;">
    <option value="0">全部</option>
    <option value="11">11月</option>
    <option value="12">12月</option>
  
</select>
                            </li>
                         
                            <li>
                                <input id="Year" type="radio" name="RepeaterYM$ctl06$Year" value="Year" onclick="selectSingleRadio(this,'Year');" /><label for="Year">2010</label>年<select name="RepeaterYM$ctl06$MonthList" id="MonthList" name="Month" style="width:120px;">
    <option value="0">全部</option>
    <option value="2">2月</option>
    <option value="3">3月</option>
    <option value="4">4月</option>
    <option value="7">7月</option>
    <option value="8">8月</option>
    <option value="9">9月</option>
    <option value="12">12月</option>
  
</select>
                            </li>
                         
                            <li>
                                <input id="Year" type="radio" name="RepeaterYM$ctl07$Year" value="Year" onclick="selectSingleRadio(this,'Year');" /><label for="Year">2011</label>年<select name="RepeaterYM$ctl07$MonthList" id="MonthList" name="Month" style="width:120px;">
    <option value="0">全部</option>
    <option value="1">1月</option>
    <option value="5">5月</option>
    <option value="6">6月</option>
    <option value="7">7月</option>
    <option value="10">10月</option>
    <option value="11">11月</option>
    <option value="12">12月</option>
  
</select>
                            </li>
                         
                </ul>

实现单选效果的JS事件：

View Code

 //让repeter生成的radio组为单选
    function selectSingleRadio(rbtn, GroupName) {
        $("input[type=radio]").each(function (i) {
            if (this.name.substring(this.name.length - GroupName.length) == GroupName) {
                this.checked = false;
            }
        })
        rbtn.checked = true;
    }

 //设置默认选中项
    $(document).ready(function () {
        var cArray = $("#rsview input[type=radio]")
        var i;
        for (i = 0; i < cArray.length; i++) {
            if (cArray[i].checked) {
                cArray[i].checked = false;
            }
            cArray[cArray.length - 1].checked = true;
        }
    });

我们现在来看看在后台是如何来遍历Repeter来加载相应组中控件的值的,代码如下：

 //获得所有年月
        void LoadData()
        {
            NewLand dataYTD = new NewLand(-1, 0);
            DataSet ds = NewLandReportAdapter.Instance.GetData(dataYTD);
            //筛选出不重复的年份
            DataTable result = ds.Tables[0].DefaultView.ToTable(true, "Years");
            RepeaterYM.DataSource = result;
            RepeaterYM.DataBind();
            //遍历RepeaterYM.加载各年的月份
            foreach (RepeaterItem item in RepeaterYM.Items)
            {
                RadioButton year = (RadioButton)item.FindControl("Year");
                string yearNow = year.Text;
                DataView dv = ds.Tables[0].DefaultView;
                dv.RowFilter = "Years=" + yearNow;
                DataTable dt = dv.ToTable();
                DropDownList monthlist = (DropDownList)item.FindControl("MonthList");
                monthlist.DataSource = dt;
                monthlist.DataTextField = "Months";
                monthlist.DataValueField = "Months";
                monthlist.DataTextFormatString = "{0}月";
                monthlist.DataBind();
                monthlist.Items.Insert(0, new ListItem("全部", "0"));
            }
        }

最后再看看，后台如何获得前台选中按扭的值：

//根据所选择的年份和月份生成报表
      protected void SelectData_Click(object sender, EventArgs e)
      {
          string year = string.Empty;
          string month = string.Empty;
          //遍历Repeater 获得选中控件的值
          foreach (RepeaterItem item in RepeaterYM.Items)
          {         
              RadioButton yearbtn = (RadioButton)item.FindControl("Year");
              if (yearbtn.Checked)
              {
                  year = yearbtn.Text;//取得选中的年份
                  DropDownList monthlist = (DropDownList)item.FindControl("MonthList");//获得选中的月份
                  month = monthlist.SelectedValue;             
              }
          }
    }