How to display Tiff images in Windows Application using C#.net?

This is how you can do it in WPF:
https://msdn.microsoft.com/en-us/library/vstudio/Aa969817%28v=VS.100%29.aspx[^],
https://msdn.microsoft.com/en-us/library/system.windows.media.imaging.tiffbitmapdecoder%28v=vs.110%29.aspx[^],
https://msdn.microsoft.com/en-us/library/system.windows.media.imaging.tiffbitmapencoder%28v=vs.110%29.aspx[^].

It might seem a bit confusing: you cannot preview TIFF per say, because TIFF is, by definition, a multi-frame format. So you need to show one of the frames, even if there is only one. Please see:
https://msdn.microsoft.com/en-us/library/system.windows.media.imaging.bitmapdecoder.frames(v=vs.110).aspx[^],
https://msdn.microsoft.com/en-us/library/system.windows.media.imaging.bitmapencoder.frames%28v=vs.110%29.aspx[^],
https://msdn.microsoft.com/en-us/library/system.windows.media.imaging.bitmapframe%28v=vs.110%29.aspx[^],
https://msdn.microsoft.com/en-us/library/system.windows.media.imaging.bitmapsource%28v=vs.110%29.aspx[^].

For System.Drawing, see, for example http://bitmiracle.com/libtiff[^].

—SA