Hello Michael,

It looks like there is some issue with the FileUploading event and it fires twice. You can workaround that by using a boolean var that shows if you've already handled it for this cycle like this:

 var uploadingFlag = false;
        function WebUpload1_FileUploading(eventArgs, infoObject) {
            if (uploadingFlag) {
                uploadingFlag = false;
                return;
            }
            uploadingFlag = true;
            if (!confirm("Continue will override existing data")) {
                return false;
         }
}

I've logged the issue in our internal system with ID 272025 and created a private support case on your behalf - CAS-210596-J0S1Y5. I've linked the issue with your case so that you will receive updates about its development.  

Regarding the second question - there are icons in these places. My assumption is that they are not available because you are missing some part of the css folder structure. Please, ensure that you've copied the entire C:\Program Files (x86)\Infragistics\2020.1\ASP.NET\jQuery\css directory to the directory you are referring in your app.

As for the progress updates - you've already defined a http handler in your web.config so you may add it as a progress URL - ProgressUrl="/WebUploadStatusHandler.ashx". Please, check if that solves the issue.

I hope this helps! Please, let me know if I may help you further!

Best regards,

Stamen Stoychev

Hello Michael,

The error message is being displayed because the file is not fully uploaded when the server tries to redirect. However, by binding a method to the client side fileUploaded event, as stated in your latest response, the file is already loaded and the page could be redirected.

Regarding your second question, the new value of the hidden input could be sent to the client side using the event server message. This could be achieved as follows:

protected void WebUpload1_UploadFinished(object sender, Infragistics.Web.UI.EditorControls.UploadFinishedEventArgs e)

    {

        e.ServerMessage += "">localhost:50313/Default2.aspx";

    }

function fileUploaded(sender, args) {

   $("#hdnSiteRootUrl").val(args.fileInfo.serverMessage);

   var loc = $("#hdnSiteRootUrl").val();

   window.location.replace(loc);

}

Please test it on your side and let me know if you need any further information regarding this matter.

Please note that due to the upcoming Christmas holidays you may experience slight delay in support responses.

Thank you for your understanding!

Regards,
Monika Kirkova,
Infragistics

And also while trying to gain more understanding how control works and what options are : 

if I add event :

function WebUpload1_FileUploaded(eventArgs, infoObject)
{
//Add code to handle your event here.
var loc = $("#hdnSiteRootUrl").val();
alert(loc);
window.location.replace(loc);
}

it will redirect to the next page.. the only thing I want to understand is the following.. if I assign value to the hidden variable during some page lifecycle events e.g. Page_Load (hdnSiteRootUrl.Value = "https://localhost:44319/Uno.aspx";)  - it will work, if I would assign value to the hdnSiteRootUrl in WebUpload1_UploadFinishing or WebUpload1_UploadFinished then in WebUpload1_FileUploaded hdnSiteRootUrl  will be "Original" i.e. initial value .. I wonder why...  

<input id="hdnSiteRootUrl" runat="server" type="hidden" value="Original" />

Also Server.Transfer is a preferred way as I'll be reading some XML data stored in the first page with the upload control...