How can I verify a files content type without using the files extension or mime type using ASP.Net.
I don’t want to use the mime type because it appears to be determined by the file extension.
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How can I verify a files content type without using the files extension or mime type using ASP.Net.
I don’t want to use the mime type because it appears to be determined by the file extension.
You could use the FindMimeFromData() function in UrlMon.dll (using pinvoke).
See this page for an example and this MSDN page for the documentation of the function.