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AJAX-refreshing progressArea in grid

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Oscar asked on 16 Jul 2012, 08:06 PM
I have a progress monitoring screen with a radGrid that lists processes.
One of the grid columns contains a progressArea that shows process progress (from 0 to 100%) (see attachment)
To refresh the page I use the following


Me.GetType(), "refresh", "window.setTimeout('window.location.reload(true)',10000);", True)

This causes the entire page to reload every 10 seconds, which is annoying,  I want just the progressareas to refresh, but cannot find how.
Thanks for any help

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Telerik team
answered on 18 Jul 2012, 02:00 PM
Hello Oscar,

I suggest you to use setInterval() method to perform AJAX request on given interval. You could do this by applying the following JavaScript:
<telerik:RadCodeBlock runat="server">
    <script type="text/javascript">
        $(document).ready(function () {
            setInterval(alertMessage, 1000);
        function alertMessage() {
            $find('<%=RadAjaxManager1.ClientID %>').ajaxRequest("refreshLabel");

You have to set the OnAjaxRequest event handler and update the RadGrid control:
<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" OnAjaxRequest="RadAjaxManager1_AjaxRequest">
        <telerik:AjaxSetting AjaxControlID="RadAjaxManager1">
                <telerik:AjaxUpdatedControl ControlID="RadGrid1" />

In code behind you shoud find the control which you want to update and make the appropriate changes. 
protected void RadAjaxManager1_AjaxRequest(object sender, AjaxRequestEventArgs e)
    if (e.Argument == "refreshLabel")
        foreach (GridDataItem item in RadGrid1.MasterTableView.Items)
            Label label = item.FindControl("Label1") as Label;
            label.Text = DateTime.Now.ToString();

I prepared a small sample and attached it to this thread. I hope this helps.

Kind regards,
the Telerik team
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