Hi,
I'm generating a file on the server which takes some time. For this, I have a hidden iframe which I then set the .src attribute to an aspx file i.e iframe.src = "/downloadFile.aspx"
While this is taking place, I'd like to have a call to a web service return the progress. To do this, I thought I could use window.setInterval or window.setTimeout but Javascript seems to be blocked as soon as I set the iframe src attribute.
Does anyone know how to get around this or perhaps try a different approach?
I have also tried handlers, but the request never gets to the server so I'm assuming is a browser/javascript issue.
//Function that gets the file
function GetFile() {
setTimeout(GetProgress, 1000);
var iframe = document.createElement("iframe");
document.body.appendChild(iframe);
iframe.src = "downloadFile.aspx";
}
/*DOES NOT WORK - Function that gets progress posts data but never recieves it until the iframe has finished and presents the file download dialog to the user. */
function GetProgress() {
$.post('progress.file', function(data) {
console.log(data);
setTimeout(GetProgress, 1000);
});
}