public SyncFusionImageCropper(Stream Imagestream = null) { InitializeComponent(); ImageCropper.SetToolbarItemVisibility("Back, Text, Add, TextColor, FontFamily, Arial, Noteworthy, Marker Felt, Bradley Hand, SignPainter, Opacity, Path, StrokeThickness, Colors, Opacity, Shape, Rectangle, StrokeThickness, Circle, Arrow, Undo, Redo, Effects, Hue, Saturation, Brightness, Contrast, Blur and Sharpen", false); ImageCropper.ToggleCropping(new Rectangle(20, 20, 20, 20)); if (Imagestream == null) { ImageCropper.Source = ImageSource.FromUri(new Uri("http://photos2.insidercdn.com/iphone4scamera-111004-full.JPG")); } else { ImageCropper.Source = ImageSource.FromStream(() => { return(Imagestream); }); } }