Ajex Issue in File Download

[test]

I got the message "to help protect your security, Internet Explorer blocked this site from downloading.." from the browser when implementing Ajax download (progress image),

my client code is like:
<telerik:RadAjaxPanel ID="RadAjaxPanel3" runat="server" LoadingPanelID="LoadingPanel1"> My Download button here...

 

</telerik:RadAjaxPanel>

My server side code 

if (GetPDF() == true)

 

Response.Redirect("PDFDownload.aspx");   

.....
If I remove RadAjaxPanel, it works fine (no borwser message)
Your help is appreciated.

Thanks
Wei

[Stuart Hemming]

Wei,

Have a look at this online help article. It explains that you can't use Upload and Ajax together and how tio work around it.

--

Stuart
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[test]

well, this article talks about Uploading, but my issue is Download. I used Ajax Uploading, it works fine for me. But download is different...In my code, I redirect to another simple page (without AJAX) to do the download, but it caused the security message from the browser.
Your another article suggests using ResponseScripts, so I changed my code to

RadAjaxPanel1.ResponseScripts.Add(

"window.location.href = ""PDFDownload.aspx"";")

I still got the "download blocked" message.
Your help is appreciated.
Thanks
Wei

 

[Stuart Hemming]

Sorry, I guess I shouldn't try to be clever so early in the morning! :-)

--
Stuart

[Martin]

Hello Wei,

Please review this forum thread discussing similar scenario.
In addition I am attaching a sample website that uses redirection to a download page that runs as expected on my end.

I hope this helps.

Regards,
Martin
the Telerik team

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[test]

Thanks for your response.
I looked at your attachment. It is different from my case. In my case click the button will go to the server, and the server may spend 5 mins to process it. Once done at the server end, I want another page (without Ajax) to do the download. I tried 

Response.redirct("PDFDownload.aspx")
and

ScriptManager.RegisterStartupScript(

Me.Page, Me.Page.GetType(), "script", "DownloadPdf()", True)

 

RadAjaxPanel1.ResponseScripts.Add("window.open(""PDFDownload.aspx"")")
and
RadAjaxPanel1.ResponseScripts.Add("window.location.href = ""PDFDownload.aspx"";")


Nothing works for me. If I remove <telerik:RadAjaxPanel ID="RadAjaxPanel1" runat="server" LoadingPanelID="LoadingPanel1">, things back to work.
This should be the issue commonly seen. I really appreciate if you can talk among your team, and give me a solution

Thanks
Wei

 

[test]

Very interesting, when I tried to download the latest teleric AJAX .NET code, I got the exact same message:  " to protect your security, the Internet explorer blocked this side from downloading file..."

[Martin]

Hello Wei,

This is Internet Explorer specific behaviour that you can learn more about here. Let me know if using any other supported browser (Firefox for example) brings you the same message.
I also modified the sample project so now it uses server redirection to the page where the download is performed.

I hope this helps

Regards,
Martin
the Telerik team

Instantly find answers to your questions on the new Telerik Support Portal.
Watch a video on how to optimize your support resource searches and check out more tips on the blogs.