Grid: ask for confirmation on select all

[kiwo]

Hi.

I have a GridClientSelectColumn in my grid. The feature I need is the following:
When SELECT ALL checkbox is checked or unchecked, before it performs the action, confirmation message is required, depending on the status:
"Are you sure you want to ...(select/deselect all entries)".

How do I accomplish that?
Thanks!

[Shinu]

Hello,

Try the following code snippet in order to show confirm on checking/unchecking the header checkbox of GridClientSelectColumn.

ASPX:

<telerik:GridClientSelectColumn UniqueName="Selectcolumn" Text="Select" HeaderText="Select">
</telerik:GridClientSelectColumn>

C#:

protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
{
    if (e.Item is GridHeaderItem)
    {
        GridHeaderItem item = (GridHeaderItem)e.Item;
        CheckBox chkbx = (CheckBox)item["Selectcolumn"].Controls[0];
        chkbx.Attributes.Add("OnClick", "showConfirm('"+chkbx.ClientID+"');");
    }
}

JavaScript:

<script type="text/javascript">
function showConfirm(chk)
{
    var c = document.getElementById(chk);
    var grid = $find("<%=RadGrid1.ClientID %>");
    if(confirm('Do you want to select/unselect all ...?'))
    {
        if(c.checked)
        {
            grid.get_masterTableView().selectAllItems();

        }
        else
        {
             grid.get_masterTableView().clearSelectedItems();
        }
    }
    else
    {
        c.checked= !c.checked;
    }
}
</script>

Happy coding.. :)

-Shinu.