C#C
C#•3y ago
Lep

❔ Auto Resize

I'm attempting a little learning project and was wondering if I could get some help on the following:

            var newimg = new BitmapImage();
            newimg.BeginInit();
            newimg.UriSource = new Uri("Images\\Snoop.gif", UriKind.Relative);
            newimg.EndInit();
            ImageBehavior.SetAnimatedSource(img, newimg);

            MainWin.Width = img resized width;  <-----

            SizeChanged += (o, e) =>
            {
                var r = SystemParameters.WorkArea;
                Left = r.Right - ActualWidth;
                Top = r.Bottom - ActualHeight;
            };

How can I get the automatically resized width of the new img?
My current main window has a capped height of 300. The width is auto and the img has an auto height and width so it scales to the 300 pixel height. If I manually change the main window width size everything works perfectly fine.

I tried the following but it didn't seem to work:
MainWin.Width = (MainWin.Height / img.ActualHeight) * img.ActualWidth;
which would give me 146.25 to be the correct width. It works if I insert the size manually, but it doesn't work if I use the equation to set the size.

I've also tried:
            SizeChanged += (o, e) =>
            {
                var r = SystemParameters.WorkArea;
                //Left = r.Right - (234 * 300 / 480);
                Left = r.Right - (img.ActualWidth * MainWin.Height / img.ActualHeight);
                Top = r.Bottom - ActualHeight;
            };

The commented out section seems to work fine but the bottom doesn't, I also tried to change "ActualWidth/Height" to just normal.
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