protected void btnDeleteExercise_Click(object sender, EventArgs e)
    {
        ExerciseManager deleter = new ExerciseManager();

        try
        {
            bool result = deleter.deleteExerciseById(Convert.ToInt32(ddlSystemExercises.SelectedItem.Value));

            if (result)
            {
                lblDeletionResult.Text = "The exercise has been removed";
                Response.Redirect("default.aspx");
            }

            else
            {
                lblDeletionResult.Text = "Something went wrong with the database deletion";
            }
        }

        catch (Exception exc)
        {
            lblDeletionResult.Text = "Something went wrong with the execution of the page";
        }
    }