The telerik:FileFilter is not working

[Jin]

I set the code is as below, the question is that why I still can see other file type while open file dialog?
  <FileFilters>
                        <telerik:FileFilter Description="Microsoft Office Document" Extensions="doc,docx" />
 </FileFilters>

[Plamen]

Hi,

 
Yes you are right file filtering doesn't work when neither Flash nor Silverlight upload modules are used as it is explained in this help topic. This is because browsers don’t provide native file filtering support at all. 

Hope this will explain the issue.

Regards,
Plamen
the Telerik team

[Mohammed]

Hi,
from the documentation I can get that the file filter is not working in IE, FireFox only if they use serverlight.
so if i use chrome or safari the file filter will not work ? 

I don't know why it is not working but there is another upload control that has file filter in all browsers while using flash, serverlight or HTML 5. 

http://ajaxuploader.com/demo/simple-upload-Validation.aspx 

so why our RadAsyncUpload control doesn't support the same ? 

[Jin]

Currently, I want to remove all invalid file due to limited type. I know the RadAsyncUpload provide a client API named OnClientValidationFailed to handle it. If the control support multiple file select, while user select 4 invalid files, the method will be call 4 times. My question is how can I only alert a common message once instead of four times? Also about how to remove all links of invalid files, I refer your reply in http://www.telerik.com/community/forums/aspnet-ajax/async-upload/remove-link.aspx, I try your way, but the sample code is not correct. I think the correct code is as below:
 function validateCodeFile(sender, eventArgs) {
            sender.deleteFileInputAt(1);
        }

[Peter Filipov]

Hi,

@Mohammed
I check the provided link and when the control is not using Silverlight/Flash module the filtering is not possible - it is a browser limitation. Please check the attached screenshot under Firefox. RadAsyncUpload control uses Silverlight/Flash/IFrame modules under IE browser in all other modern browsers our control is using a FileAPI module based on the File API HTML5.

@Jin
The FileValidationFailed event is fired for every of the uploaded files which does not pass the validation. It is not possible to fire it only once for all invalid files. Regarding the referenced example I changed it to work as expected, please review the attachment.

Regards,
Peter Filipov
the Telerik team