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LibTiff.NET
The .NET version of original libtiff library written by Sam Leffler and others.
LibTiff.Net provides support for the Tag Image File Format (TIFF), a widely used format for storing image data.
Sample code
Sample code for C# and VB.NET
https://github.com/BitMiracle/libtiff.net/tree/master/Samples
Documentation
Help pages can be found here
https://bitmiracle.github.io/libtiff.net/help/
License
LibTiff.Net is freely available for all uses under the New BSD license.
The library is free and can be used in commercial applications without royalty.
We don't promise that this software works. But if you find any bugs, please let us know!