C# CheckBoxList 单选

想让CheckBoxList 成为单选，要在选中事件时候绑定一个js方法

1  <asp:CheckBoxList ID="cblComments" runat="server" OnSelectedIndexChanged="cblComments_SelectedIndexChanged" AutoPostBack="true">
2         <asp:ListItem Text="Agree" Value="Agree" onclick="CheckCBLSimpleSelect(this)"></asp:ListItem>
3         <asp:ListItem Text="Disagree" Value="Disagree" onclick="CheckCBLSimpleSelect(this)"></asp:ListItem>
4 </asp:CheckBoxList>

js方法为：

 1 /*let CheckBoxList be Simple Checked*/
 2         function CheckCBLSimpleSelect(sender) {
 3             var container = sender.parentNode;
 4             if (container.tagName.toUpperCase() == "TD") { // 服务器控件设置呈现为 table 布局（默认设置），否则使用流布局
 5                 container = container.parentNode.parentNode; // 层次： <table><tr><td><input />
 6             }
 7             var chkList = container.getElementsByTagName("input");
 8             var senderState = sender.checked;
 9             for (var i = 0; i < chkList.length; i++) {
10                 chkList[i].checked = false;
11             }
12             sender.checked = senderState;
13             //checkTotal()//count checked checkbox num
14         }