Hi,

Your code looks perfectly fine. The only thing we can spot is when you declare gridCell, you have "gridCell", but when you use it, you use "gridcell". Note the case difference for the letter "c".

Thanks!

I modified the code slightly so that I can clear all and select all. It works fine 1 time. After that the checkbox value always returns a "0". Am I approaching this correctly?

function check_all() {
//Get the grid object. This code assumes the Grid's ClientID is
//"Grid1", you will need to change this the real ClientID of your
//Grid
//alert("your here");
var grid = eo_GetObject("ctl00_ContentPlaceHolder1_RecipientList");

//Loop through all grid items
for (var i = 0; i < grid.getItemCount(); i++) {
//Get the grid item
var gridItem = grid.getItem(i);

//Get the grid cell
var gridCell = gridItem.getCell(0);

//Check/uncheck the cell. Use "1" to check the cell,
//use "0" to uncheck
if (gridCell.getValue("1"))
{
gridCell.setValue("0");
}
else
{
gridCell.setValue("1");
}
}
}

Thanks for all the input... I ended up putting a checkbox in the column header text. Then I access that value in the javascript to populate the grid rows.

<eo:CheckBoxColumn Width="50" HeaderText='<div><input id="chkAll" type="checkbox" onclick="check_all();" /></div>' AllowResize="false" Name="ckBox">
<CheckBoxStyle CssText="" />
</eo:CheckBoxColumn>


<script type="text/javascript">
function check_all() {
var grid = eo_GetObject("ctl00_ContentPlaceHolder1_RecipientList");
var chkBox = document.getElementById("chkAll");

//Loop through all grid items
for (var i = 0; i < grid.getItemCount(); i++) {
//Get the grid item
var gridItem = grid.getItem(i);

//Get the grid cell
var gridCell = gridItem.getCell(0);

//Check/uncheck the cell. Use "1" to check the cell,
//use "0" to uncheck
if (chkBox.checked)
{
gridCell.setValue("1");
}
else
{
gridCell.setValue("0");
}
}
}
</script>

Works great!