<p>I am looking for a simple way to get a mime type where the file extension is incorrect or not given, something similar to <a href="https://stackoverflow.com/questions/51438/getting-a-files-mime-type-in-java">this question</a> only in .Net.</p>

In Urlmon.dll, there's a function called
```
FindMimeFromData
```
.
From the documentation
MIME type detection, or "data sniffing," refers to the process of determining an appropriate MIME type from binary data. The final result depends on a combination of server-supplied MIME type headers, file extension, and/or the data itself. Usually, only the first 256 bytes of data are significant.
So, read the first (up to) 256 bytes from the file and pass it to
```
FindMimeFromData
```
.