In Telerik.Web.UI.dll v2010.1.616.35 I can use asyncUpload.UploadedFiles.ContentType correctly
but in new versions (I test Telerik.Web.UI.dll v2010.3.1317.35) always return Incorrect (=application/octet-stream) ContentType!
Any solution to solve this problem there?
it's very important for me because i should use new version of Telerik.Web.UI.dll and also i should check ContentType instead of file extension
if users change file extension and send it, result of my work is incorrect and if send a virus or ... my website security is in danger
please help me