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How to Retrieve File Thumbnails Programmatically using the Windows API in C#?

Susan Sarandon
Susan SarandonOriginal
2024-12-31 22:03:11564browse

How to Retrieve File Thumbnails Programmatically using the Windows API in C#?

Retrieving File Thumbnails Using Windows API in C#

Question:

How can one programmatically retrieve thumbnail images for files on the system using the Windows shell API?

Answer:

Using the WindowsAPICodePack:

The WindowsAPICodePack library provides a convenient method for obtaining file thumbnails:

  1. Install the WindowsAPICodePack-Shell package via NuGet.
  2. Use code similar to this:
using System.Drawing;
using Shell32;

...

ShellFile shellFile = ShellFile.FromFilePath(pathToYourFile);
Bitmap shellThumb = shellFile.Thumbnail.ExtraLargeBitmap;

Note:

This approach retrieves the thumbnail representation of files as stored by Windows. It does not involve parsing or creating thumbnails from scratch.

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