Hello,

I am going through the help file for CSOM (client-side object model) for WebDataGrid and unfortunately am not able to find a client-side method for that.

Still, in most cases if we assume that you have wrapped your WebDataGrid inside an UpdatePanel, you can just have a button inside the ContentTemplate of the update panel (let's have its ID="RefreshButton") - then you can refresh the whole UpdatePanel with

<script type="text/javascript">

function RunThisAfterAsyncPostback()
{
    document.getElementById("<%= RefreshButton.ClientID %>").click();
}

</script> 

you can hide the button by setting its style / CssClass to have negative top / left properties ot display:none / visibility: hidden