private void newButton_Click(object sender, EventArgs e)
        {
            NewExerciseForm exerciseForm = new NewExerciseForm();

            this.IsMdiContainer    = true;
            exerciseForm.MdiParent = this;

            exerciseForm.Show();
        }
        private void dataGridView1_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
        {
            int test = (int)dataGridView1.Rows[e.RowIndex].Cells[0].Value;

            Exercise selectedExer = new Exercise(test);

            NewExerciseForm exerciseForm = new NewExerciseForm(selectedExer, 1);

            this.IsMdiContainer    = true;
            exerciseForm.MdiParent = this;

            exerciseForm.Show();
        }