WPF - Getting Image Width/Height from internet URL

Question

I've managed to get an image's width/height if its stored in my computer with the following code:(Fullpath is the file's full location)

        var bitmapFrame = BitmapFrame.Create(new Uri(FullPath), BitmapCreateOptions.DelayCreation, BitmapCacheOption.None);
        var width = bitmapFrame.PixelWidth;
        var height = bitmapFrame.PixelHeight;

But the second I try to change the FullPath to an internet image (such as http://www.interweb.in/attachments/pc-wallpapers/16187d1222942178-nature-wallpaper-nature-summer-wallpaper.jpg) the width and height will not determine the real values needed and will just remain with the value of "1".

I've been sitting for a few hours here trying to figure out what went wrong and working a way around it but without success. Thank you very much in advance!

Aron · Accepted Answer · 2017-05-31T01:57:41.660

1

Try this. For net Uri the ImageSource will download the image asynchronously, to avoid blocking.

    var bitmapFrame = BitmapFrame.Create(new Uri(FullPath), BitmapCreateOptions.None, BitmapCacheOption.None);
    if(bitmapFrame.IsDownloading)
    {
        bitmapFrame.DownloadCompleted += (e, arg) =>{
            var width = bitmapFrame.PixelWidth;
            var height = bitmapFrame.PixelHeight;

        }
    }

You want to wait for the DownloadCompleted event.

edited May 31 '17 at 01:57

answered Oct 29 '13 at 08:52

Aron

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I've tried to copy your suggestion (only thing I changed was the parameter name from e to t because I'm testing it on a button click) but the values are still 1. – Oranges Oct 29 '13 at 09:20
I've found the problem, it needs to be BitmapCreateOptions.None instead of BitmapCreateOptions.DelayCreation . Thank you very much :)! – Oranges Oct 29 '13 at 18:21

WPF - Getting Image Width/Height from internet URL

1 Answers1