Compare mime type againt file extension

[Foppa]

How can I validate that the file I have uploaded has right mime type if compared with the file extension?

I want to support all browsers. It means well that I must do the validation on the server. Or?
And how should I do?

Right now I use RadUpload and validates against the file extensions, it works well. But like I say I also want to make sure that the file extension matches the mine type.

Grateful for the tips!
Best regards,
Foppa

[Plamen]

Hello Foppa,

 
You can set the AllowedMimeTypes programmatically as it is done in the code behind in this on-line demo but different browsers serve different MIME types for the same files and as it is explained here RadUpload does not determine the mime-type using only the file extension. For example if you try to upload a text file that has the extension ".JPG", it is still uploaded with text/plain mime-type.

Hope this will explain the issue.

Greetings,
Plamen
the Telerik team