MTMCL.Download.Back C# (CSharp) Method

        private void Back()
        {
            MeCore.MainWindow.gridMain.Visibility = Visibility.Visible;
            MeCore.MainWindow.gridOthers.Visibility = Visibility.Collapsed;
            var ani = new DoubleAnimationUsingKeyFrames();
            ani.KeyFrames.Add(new LinearDoubleKeyFrame(0, TimeSpan.FromSeconds(0)));
            ani.KeyFrames.Add(new LinearDoubleKeyFrame(1, TimeSpan.FromSeconds(0.2)));
            MeCore.MainWindow.gridMain.BeginAnimation(OpacityProperty, ani);
        }