Incorrect ContentType in new versions! how solve it?

[mastermehdi]

hello

In Telerik.Web.UI.dll v2010.1.616.35 I can use asyncUpload.UploadedFiles[0].ContentType correctly

but in new versions (I test Telerik.Web.UI.dll v2010.3.1317.35) always return Incorrect (=application/octet-stream) ContentType!

why?

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

[Scott Horrocks]

Same issue.  Could really use a patch or work around ASAP since I already upgraded my controls and pushed to production.

[mastermehdi]

with special thanks for your attention:

Which patch?

Which ASAP? how?

Please help me

[Dimitar Terziev]

Hello Scott,

This problem will be fixed in the upcoming Q1 release.
For now as a workaround I could suggest the following approach. Here you could find all MIME types base on the file extension. You should create such a Dictionary, so when a file is uploaded you will check it's extension and thus you could determine the ContentType.


Regards,
Dimitar Terziev
the Telerik team

[mastermehdi]

thanks for your help

but your answer has a point

if user change file extension make problem

anyway I hope that this issue be resolved in the near future