Check all checkoxes in a Repeater

Hi

try this example to Check all checkoxes in a repeater

<div id=”Repeater1Div”>
 <asp:Repeater ID=”Repeater1″ runat=”server” OnItemDataBound=”Repeater1_ItemDataBound”>
  <HeaderTemplate>
   <table width=”100%” cellpadding=”0″ cellspacing=”0″>
   <tr>
    <td>
     <asp:CheckBox id=”CheckAllCheckBox” Text=”Check All” runat=”server” />
    </td>
   </tr>
   </table>
  </HeaderTemplate>
  <ItemTemplate>
   <table width=”100%” border=”2″ cellpadding=”0″ cellspacing=”0″>
    <tr>
     <td valign=”top”>
      <asp:Label id=”Label1″ Text=’<%# Eval(“SomeDatabaseField”) %>’ runat=”server”></asp:Label>
     </td>
     <td valign=”top”>
      <asp:CheckBox ID=”CheckBox1″ runat=”server” />
     </td>
    </tr>
   </table>
  </ItemTemplate>
 </asp:Repeater>
</div>

<script type=”text/javascript”>
<!–
function checkAllCheckBoxes(elementRef, parentId)
{
 var parentRef = document.getElementById(parentId);
 var inputElementArray = parentRef.getElementsByTagName(‘input’);
 for (var i=0; i<inputElementArray.length; i++)
 {
  var inputElementRef = inputElementArray[i];
  if ( inputElementRef.type == ‘checkbox’ )
  {
   inputElementRef.checked = elementRef.checked;
  }
 }
 return false;
}
function setCheckAllCheckBox(elementRef, checkAllCheckBoxID)
{
 var checkAllCheckBoxRef = document.getElementById(checkAllCheckBoxID);
 if ( elementRef.checked == false )
  checkAllCheckBoxRef.checked = false;
 return false;
}
// –>
</script>

in code behind:

private string g_headerCheckBoxId = string.Empty;

protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
 if (e.Item.ItemType == ListItemType.Header)
 {
  CheckBox headerCheckBox = (CheckBox)e.Item.FindControl(“CheckAllCheckBox”);
  if (headerCheckBox != null)
  {
   string containerId = “Repeater1Div”;
   string clickHandler = string.Format(“checkAllCheckBoxes(this, ‘{0}’);”, containerId);
   headerCheckBox.Attributes.Add(“onclick”, clickHandler);
   g_headerCheckBoxId = headerCheckBox.ClientID;
  }
 }
 else if ((e.Item.ItemType == ListItemType.AlternatingItem) || (e.Item.ItemType == ListItemType.Item))
 {
  CheckBox checkBoxRef = (CheckBox)e.Item.FindControl(“CheckBox1″);
  if (checkBoxRef != null)
  {
   string clickHandler = string.Format(“setCheckAllCheckBox(this, ‘{0}’);”, g_headerCheckBoxId);
   checkBoxRef.Attributes.Add(“onclick”, clickHandler);
  }
 }
}

Hope this helps

Good Luck