FileUpload web control: specify filename pattern

Question

With the FileUpload ASP.NET web control, is it possible to specify a filename or filetype to limit the files displayed in the browse dialog?

For example "*.xlsx" or "Foo*.docx"

Answer 1

No, it's not possible to filter the file extensions in a file browser control at client side in ASP.NET.

You could hook up a JavaScript that would trigger when the contents of the text box has changed and then validate the extension though.

Answer 2

Hi Ben,

And you can also try this issue on asp.net forum: http://forums.asp.net/ 

Best regards,

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Mike Feng
MSDN Community Support | Feedback to us
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