How can I make an ascx control constantly refresh with updated data from its datasource within a specified time interval? The ascx control is contained within an update panel.
How can I make an ascx control constantly refresh with updated data from its datasource within a specified time interval? The ascx control is contained within an update panel.
To optimize your application's performance, utilize a timer control provided by the AJAX toolkit that you are already utilizing:
<asp:Timer ID="tmrPolling" runat="server" Interval="10000" ontick="tmrPolling_Tick"></asp:Timer>
Integrate a trigger into your update panel as shown below:
<Triggers>
<asp:AsyncPostBackTrigger ControlID="tmrPolling" EventName="Tick" />
</Triggers>
Subsequently, create the tmrPolling_Tick event handler to manage updates within your update panel controls and data:
protected void tmrPolling_Tick(object sender, EventArgs e)
{
// Implement necessary changes to update panel controls and data here.
}
It is advisable not to include the timer code within the content area of your update panel.
To trigger a refresh of the update panel in a client script, you can set up a timer and invoke the __doPostBack() function. For more information, check out this helpful resource.
Repeating code is being utilized to maintain clarity in the code structure.
function initiatePageLoad(sender, args)
{
setTimeout(refreshContent, 5000); // Delayed refresh after 5 seconds
}
function handleRequestEnd(sender, args)
{
// Validation for potential AJAX request errors
setTimeout(refreshContent, 5000); // Refreshing content after 5 seconds
}
function refreshContent()
{
__doPostBack('TargetUpdatePanelID', '');"
}
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(handleRequestEnd);
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