private void btnAdd_Click(object sender, EventArgs e)
        {
            try
            {
                var foundCourse = courseCRUD.FindCourse(txtTitle.Text);
                if (!foundCourse)
                {
                    var departmnet = cbDepartment.SelectedItem as Department;
                    var course     = new Course();
                    course.Title        = txtTitle.Text;
                    course.CreditHours  = int.Parse(txtCreditHours.Text);
                    course.DepartmentId = departmnet.DepartmentId;

                    var result = courseCRUD.AddCourse(course);
                    if (result)
                    {
                        MessageBox.Show("Successfully added '" + txtTitle.Text + "' as new Course.", "Information", MessageBoxButtons.OK, MessageBoxIcon.Information);
                        ClearTextBoxes();
                    }
                }
                else
                {
                    MessageBox.Show("Course already exists!", "Note", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Error!", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }