public void ShowRoutine()
        {
            ResetControls();

            OpenFileDialog openFileDialog = new OpenFileDialog();

            openFileDialog.InitialDirectory = RoutineManager.routineDirectoryPath;
            openFileDialog.Title            = "Open routine";

            DialogResult dialogResult = openFileDialog.ShowDialog();


            if (dialogResult == DialogResult.OK)
            {
                try
                {
                    WorkOutRoutine workOutRoutine = RoutineManager.LoadWorkOutRoutine(openFileDialog.FileName);
                    MessageBox.Show("Work out routine (" + workOutRoutine.RoutineName + ") was opened succesfully.");

                    FillListView(workOutRoutine);

                    workOutRoutine.UpdateRoutine();
                    TotalExercisesLabel.Text = "Total Exercises: " + workOutRoutine.TotalExercises;
                    TotalSetsLabel.Text      = "Total Sets: " + workOutRoutine.TotalSets;
                    StartLabel.Text          = "Start: " + workOutRoutine.Start.ToShortDateString();

                    if (workOutRoutine.Duration.TotalDays >= 2)
                    {
                        DurationLabel.Text = "Duration: " + workOutRoutine.Duration.TotalDays.ToString("F0") + " days";
                    }
                    else
                    {
                        DurationLabel.Text = "Duration: " + workOutRoutine.Duration.TotalDays.ToString("F0") + " day";
                    }
                }
                catch (InvalidCastException)
                {
                    MessageBox.Show("Select the proper work out routine.");
                }
            }
        }