I'm sure there are other valid apporaches as well. Another is to hold these mappings in an xml file or in an array which you can store in the application object. As far as valid values for filetypes are concerned, Google will be your friend there. C# octet stream. Just google 'content-type Word' or 'content-type pdf' etc. When you store the document, you should know the filetype, so you can marry up the filetype and the correct content-type when you come to retrieve it.
Hollywood Movies In Hindi Mp4 Format Free Download 2017
Hollywood Mp4 Movies Free Download
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