Convert ImageSource to BitmapImage - WPF

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Convert ImageSource to BitmapImage - WPF

I'm using a class library that generates a large ImageSource, > 3000x3750 pixels. I would like to convert this ImageSource to BitmapImage so that I can take advantage of DecodePixelWidth or DecodePixelHeight instead of resizing it everytime this image is generated.

I need to display this image for the user first, and most of the users have a screen resolution of 1024x768, I'm binding this ImageSource to an Image control for this, but it can be noticed how "heavy" it is.

How can I do this? Or what is the best solution for this case?

thanks!

+2 A:

The BitmapImage type inherits BitmapSource and ultimately ImageSource (both of which are abstract classes). You need to check what the actual type of your object is, i.e. check object.GetType().Name. If you're in luck, it may actually be returning a BitmapSource object and you will simply need to cast it to that type before being able to use it as such.

Noldorin 2009-05-28 12:09:25

I did this, and it returns a ImageSource...

2009-05-28 12:13:42

@Hans: Did you use the exact call I specified in my post? It should really return the *actual* type of the object, not the base type (or type of the variable).

Noldorin 2009-05-28 12:20:47

@Noldorin: yes, I did, the documentation also says the return type is ImageSource... thanks

2009-05-28 12:24:25

@Hans: That's quite strange indeed... the only possible reason of which I can think is that the actual type (that implements ImageSource) is private and therefore not exposed. Just to be sure: have you tried casting to any of the types derived from ImageSource. (See MSDN for a list.) Otherwise, maybe you could tell us what library you're using so we can try it for ourselves.

Noldorin 2009-05-28 16:09:22

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Convert ImageSource to BitmapImage - WPF

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