im making file upload  user control.
one of the control properties is the allowed formats:
myUpload.allowedFormats = "gif|jpg|doc|txt|ppt|xls|htm|html";

now,i took the file  name and split the name and compare this string (split it
also) to the file extension.

it is not a good approch since a person can rename the file name to something
like:

myFile.jpg.exe

...

so what is the solution?if im taking myFile.postedFile.contentType

im getting in word application upload : application\msword...

i need the extension to compare to what the developer put in the property
(doc,htm...)