ViewAnimations.cs

///Showing UIView Animation Slide from Bottom.
var sampleView = new UIView(new CGRect(0, this.View.Bounds.Height, this.View.Bounds.Width, 0));
			sampleView.BackgroundColor = UIColor.Brown;
			BtnClick.TouchUpInside += (sender, e) => {
				UIView.AnimateAsync(0.55f, () => {
					sampleView.Frame = new CGRect(0, this.View.Bounds.Height - 150, this.View.Bounds.Width, 150);
					this.View.AddSubview(sampleView);
				});
			};