ASP .NET AJAX Timer control : Processing client script on Tick event

Timer Control is a very handy ASP.NET AJAX Extension control used to 'Performs asynchronous or synchronous Web page postbacks at a defined interval'.

This control has good set of features associated with it. But still i feel there is no option to process the client scripts on the Timer's Tick event.

The below given script explains a workaround to the above issue.

// Access the Timer control.

var TestTimer = $find('<%= TestTimer.ClientID %>');

/* Override the '_doPostback' (method called to fire the server Tick event)

method with your own function. */

TestTimer._doPostback = TimerTick;

// Overridden Timer Tick Function

function TimerTick()

{

// Here this is called on every timer tick event..

// So do your client processing here..

alert('Timer Client Click');

// Finally do the async postback..

var ClientTimerId = '<%= tAutoSave.ClientID %>';

// Now call the Asyncpost back method..

// Replace the client id's with the Unique Id..

__doAsyncPostBack(TestTimer, ClientTimerId.replace(/\_/g, '$'),'');

}

// Method to do async post back..

function __doAsyncPostBack(sourceElement, eventTarget, eventArgument)

{

// Here we need to do an async post back...

// Get the Form

var form = Sys.WebForms.PageRequestManager.getInstance()._form;

// Set Event target and the event arguments..

form.__EVENTTARGET.value = eventTarget;

form.__EVENTARGUMENT.value = eventArgument;

// Set the async post back as true..

Sys.WebForms.PageRequestManager.getInstance()._postBackSettings.async = true;

// Set source element..

Sys.WebForms.PageRequestManager.getInstance()._postBackSettings.sourceElement = sourceElement;

// Call the form submit..

Sys.WebForms.PageRequestManager.getInstance()._onFormSubmit();

}