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How to avoid javascript error 'args is not defined' in ajax autosave implementation?

I have attempted to implement autosave on a .net application using an ajax update panel. I am having difficulty with preventing / capturing errors. My initial attempt to capture errors involved that addition of including Sys.WebForms.PageRequestManager.getInstance().add_endRequest(endRequest);
I then coded the error capture withing the endRequest function. That resulted in a Sys is not defined error. I found this posting: http://encosia.com/updated-your-webconfig-but-sys-is-still-undefined/ which led me to my latest implementation which has the sys handling in a separate script file. Now I receive the error 'args is not defined'. I'm not sure how to reference the args to enable the ajax call. So you can see I am now out of my depth. I have included the code from my .aspx file and js file below. Your help greatly appreciated
Verdy SysInstance.js

.aspx page
SCRIPT REFERENCE:
	<asp:ScriptManager ID="SMan" runat="server" >
	<Scripts>
		<asp:ScriptReference Path="js/SysInstance.js" />
	</Scripts>
</asp:ScriptManager>

UPDATEPANEL CONTROL:
	    <asp:UpdatePanel ID="Deneme" runat="server" UpdateMode="Conditional">
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="TimerAutoSave" EventName="Tick" />
        </Triggers>
        <ContentTemplate>
            <asp:HiddenField ID="hdnUserID" runat="server" Value="" />
            <asp:HiddenField ID="hdnLanguageCode" runat="server" Value="" />
            <asp:HiddenField ID="hdnTempDocID" runat="server" Value="" />
            <asp:HiddenField ID="hdnServerName" runat="server" Value="" />
            <asp:HiddenField ID="hdnServerPort" runat="server" Value="" />
            <asp:HiddenField ID="hdnVirtualDirectoryName" runat="server" Value="" />
            <asp:HiddenField ID="hdnPostASPX" runat="server" Value="" />
        </ContentTemplate>
    </asp:UpdatePanel>
    <asp:Timer ID="TimerAutoSave" runat="server" Interval="5000" OnTick="TimerAutoSave_Tick">
    </asp:Timer>

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Ravi Vaddadi

check if this solves your problem

Sys.Application.add_init(AppInit);

function AppInit() {
Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(beginRequest);
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(endRequest);
}

function beginRequest(sender,args) {
if (args.get_error() != undefined) {
//$get('Error').style.visibility = "visible"; // Let the framework know that the error is handled, // so it doesn't throw the JavaScript alert.
$get('Error').style.visibility = "hidden"; // Let the framework know that the error is handled, // so it doesn't throw the JavaScript alert.
args.set_errorHandled(true);
}
prm._scrollPosition = null;
}

function endRequest(sender, args) { // Check to see if there's an error on this request.
if (args.get_error() != undefined)
//if ($get('Error').style.visibility == "visible")
// CloseError();
{
$get('Error').style.visibility = "hidden"; // Let the framework know that the error is handled, // so it doesn't throw the JavaScript alert.
args.set_errorHandled(true);
}
}

verdante

ASKER

Thanks SriVaddadi. I get a new error now:

args.get_error is not a function

cheers

Verdy

Ravi Vaddadi

BeginRequestEventArgs does not have have get_error method. you have remove the code referring get_error in beginRequest

verdante

ASKER

Thanks. Sorry this is my code when I remove the comments. I thought the get_error() method was a property of the args parameter. Can you please advise how I can modify this code to make sure the get_error method is included:

function beginRequest(sender, args) {
if (args.get_error() != undefined) {
$get('Error').style.visibility = "hidden";
args.set_errorHandled(true);
}
prm._scrollPosition = null;
}

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Ravi Vaddadi

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verdante

ASKER

Thx for that. AS you can see I am out of my depth but you have taught me well. I removed the error handling from the beginrequest and it works nicely.
I'll also check out the link so I have a better understanding

thx again
Verdy