Add RadAsyncUpload validation by MimeType. AllowedMimeTypes property is inherited from RadUpload, but it is never used.
Posted on:24 Nov 2015 14:51
I see this has been in the back log for some years based on the thread your support has shared with me. http://www.telerik.com/forums/allowedmimetypes-not-working-in-radasyncupload.
Please implement it.