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