public override void ViewDidLoad() { base.ViewDidLoad(); uIColors.Add(UIColor.Black); uIColors.Add(UIColor.DarkGray); uIColors.Add(UIColor.LightGray); uIColors.Add(UIColor.White); uIColors.Add(UIColor.Blue); uIColors.Add(UIColor.Red); uIColors.Add(UIColor.Yellow); uIColors.Add(UIColor.Magenta); uIColors.Add(UIColor.Green); uIColors.Add(UIColor.Cyan); BrushColor.ThumbTintColor = uIColors[selectedColor]; undoBT.TouchUpInside += (sender, e) => { DrawView.Undoline(); }; ClearBT.TouchUpInside += (sender, e) => { DrawView.Clear(); }; BrushColor.ValueChanged += (sender, e) => { if (BrushColor.Value > 0) { selectedColor = (int)Math.Ceiling(BrushColor.Value / BrushColor.MaxValue * uIColors.Count - 1); BrushColor.ThumbTintColor = uIColors[selectedColor]; } }; BrushSize.TouchUpInside += (sender, e) => { infoBrushSize.Hidden = true; }; BrushSize.ValueChanged += (sender, e) => { infoBrushSize.Text = ((int)BrushSize.Value).ToString(); infoBrushSize.Hidden = false; }; }