Question

I am using a checkboxlist in asp.net page and bound data from database. Now i want to select the single item. Suppose i select an item means clear the old selection and select the new items only

Please help me to do this..

Answer 1

Try this

Front end

function radioMe(e) {
  if (!e) e = window.event;
  var sender = e.target || e.srcElement;

  if (sender.nodeName != 'INPUT') return;
  var checker = sender;
  var chkBox = document.getElementById('<%= chks.ClientID %>');
  var chks = chkBox.getElementsByTagName('INPUT');
  for (i = 0; i < chks.length; i++) {
      if (chks[i] != checker)
      chks[i].checked = false;
  }
}

<asp:CheckBoxList runat="server" ID="chks">
  <asp:ListItem>Item</asp:ListItem>
  <asp:ListItem>Item</asp:ListItem>
  <asp:ListItem>Item</asp:ListItem>
  <asp:ListItem>Item</asp:ListItem>
</asp:CheckBoxList>

Back end

protected void Page_Load(object sender, EventArgs e)
{
        chks.Attributes.Add("onclick", "radioMe(event);");
}

But instead of doing all this you should consider RadioButtonList control