Question

In a WPF application I get the image size (width and height) before really loading it (as I am loading it with reduced size…) and I am using this C# code to get it:

BitmapFrame frame = BitmapFrame.Create(new Uri(path), BitmapCreateOptions.DelayCreation, BitmapCacheOption.None);
Size s = new Size(frame.PixelWidth, frame.PixelHeight);

That works fine but then it locks the image file that I later want to delete by the application but cannot. I know, if I set BitmapCacheOption.OnLoad it solves the problem but then it loads the image so I lose the advantage I want to get with loading it with reduced size (using DecodePixelWidth etc.).

So anyone knows how to get the image size beforehand without locking the image?

Answer 1

Maybe you should use stream in using block to remove lock after you get your image size

using (FileStream fileStream = new FileStream(path, FileMode.Open, FileAccess.Read))
{
   BitmapFrame frame = BitmapFrame.Create(fileStream , BitmapCreateOptions.DelayCreation, BitmapCacheOption.None);
   Size s = new Size(frame.PixelWidth, frame.PixelHeight); 
}