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Editorial Team
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Asked: 2026-06-05T20:09:54+00:00

I need to perform multiple operations on an Image, for example, I need to

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I need to perform multiple operations on an Image, for example, I need to resize the image, perhaps pad it to maintain aspect ratio (and draw a background color), and conditionally stamp with a watermark.

I’m currently using BitmapFrame as the type that I pass between the methods involved.

Can anyone recommend another type which I should use to perform incremental updates on images?

I could possibly create a composition of various images, although I’m not sure which types I should use for this?

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1 Answer

  1. Editorial Team

    WriteableBitmap is suitable when you want to make incremental updates of the image. Both BitmapFrame and WriteableBitmap inherit from BitmapSource, and WriteableBitmap can be instantiated using any BitmapSource.

    You might also want to have a look at the WriteableBitmapEx library that provides a wealth of efficient WriteableBitmap extension methods for bitmap manipulation. This library is applicable to WPF applications as well as Silverlight, WP7 and Metro.

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