Question

I have the following jquery that registers a timer interval to occur every 10 seconds on the webpage whenever an input button called btnExport is clicked.

if ($) {
    $(document).ready(function () {
        $("input[id$='btnExport']").click(function ($e) {
            // javascript timer function
            window.setInterval(ExportProgressCheck, 10000);
        });

        function ExportProgressCheck() {
            $.ajax({
                type: "POST",
                url: "DMZ_Export.aspx/GetExportProgress",
                contentType: "application/json; charset=utf-8",
                data: "",
                dataType: "json",
                success: AjaxSuccess,
                error: AjaxFailed
            });
        }
    });
}

However, under certain scenarios I need the timer interval to begin ticking just as soon as the page load itself is loaded. My problem is that I am not sure how to do this from within the page load event of the codebehind. In theory it would go something like…

protected void Page_Load(object sender, EventArgs e) {
    if (!Page.IsPostBack) {
        if (IsExportInProgress()) {
            // Register the timer interval now!! How do I do this??
            // window.setInterval(ExportProgressCheck, 10000);
            }
        }
    }
}

I tried to accomplish this by registering a startup script, but it doesn’t like the script because it doesn’t know what ExportProgressCheck is…

ClientScriptManager cs = Page.ClientScript;
cs.RegisterStartupScript(cstype, csname1,
    "<script type=\"text/javascript\">window.setInterval(ExportProgressCheck, 10000);</script>",
    false);

Any help on this would be very appreciated! Thanks!

Answer 1

Pulled this off by going another route. I use jQuery’s $get function to hit another aspx page to get the condition value.

if ($) {
    $(document).ready(function () {

        $.get("ExportInProgCheck.aspx", function (response) {
            if (response != '')
                window.setInterval(ExportProgressCheck, 10000);
        });
    });
}

ExportInProgCheck.aspx simply returns ‘true’ if the condition is met, at which point the window.setInterval gets set.