Using CheckBoxList to implement a single selection in. Net

Use CheckBoxList to achieve the reason for the single election is that I think CheckBoxList control page display effect to look some, need friends can refer to the next RadioButtonList is provided in. NET to achieve a single selection, but I always like to use CheckBoxList reason I think CheckBoxList control page display effect to look some, hehe     Here is the first CheckBoxList implementation of the control of the Click event Call JS to control the single selected     such as the page below:    code as follows: <asp:checkboxlist id= " CheckBoxList1 "borderwidth=" 1 "runat=" server "repeatlayout=" Flow ">  <asp:listitem onclick=" Checkboxlist_ Click (this) "value=" Item1 ">Item1</asp:ListItem>  <asp:listitem onclick=" Checkboxlist_click (This) "Value=" Item2 ">Item2</asp:ListItem>  <asp:listitem onclick=" Checkboxlist_click (This) "value=" Item3 ">Item3</asp:ListItem>  <asp:listitem onclick=" Checkboxlist_click (This) value= "ITEM4" > item4</asp:listitem>  <asp:listitem onclick= "Checkboxlist_click (This)" value= "ITEM5" >Item5</ asp:listitem>  </asp:CheckBoxList>      Here is the call of the js    principle is: 1, Get page control collection, loop lookup check     2, set check to False, and then set the incoming control to check the   generationCode is as follows: function Checkboxlist_click (sender)   {  var container = sender.parentnode;  if ( Container.tagName.toUpperCase () = "TD") {//server control settings render as table layout (default setting), otherwise use flow layout   container = Container.parentNode.parentNode; Level: <table><tr><td><input/> }  var chklist = Container.getelementsbytagname (" Input ");  var senderstate = sender.checked;  for (var i=0; i<chklist.length;i++) {  chklist[i].checked = false; }  sender.checked = senderstate; }