Changing a System.Windows.Media.Imaging.ImageSource Image size/resolution?

I have an image source of type System.Windows.Media.Imaging.ImageSource and I was wondering how I could get its resolution/size as well as modify the actual source data to change the file si开发者_Python百科ze and image dimensions.

You can cast it to BitmapSource and then access those properties.

if (theImage.ImageSource is BitmapSource)
{
    BitmapSource bitmap = (BitmapSource)theImage.ImageSource;
    int width = bitmap.Width;
}

Here is more info on the BitmapSource class.