private void button6_Click(object sender, EventArgs e) { String error = ""; if (comboBox3.SelectedIndex < 0 || comboBox1.SelectedIndex < 0) { error += "The field can't be empty.\n"; MessageBox.Show("Error"); } else { foreach (Department dept in departments) { if (dept.getDepartmentId() == (Convert.ToInt32(comboBox1.SelectedItem.ToString()))) { Course c = (Course)courses[(Convert.ToInt32(comboBox3.SelectedItem.ToString()))]; if (c == null) { MessageBox.Show("Course not found"); } else { if (dept.findCourse(c) == 1) { MessageBox.Show("Course already exists."); } else { dept.AddCourse(c); MessageBox.Show("course: " + c.getCourseName() + " added into department: " + dept.getDepartmentName()); } } break; } else { MessageBox.Show("Department not available"); } } } }
private void button4_Click(object sender, EventArgs e) { string message = ""; if (textBox4.Text == "") { MessageBox.Show("Course ID must be entered"); } else { if (courses.ContainsKey((Convert.ToInt32(textBox4.Text)))) { Course c = (Course)courses[(Convert.ToInt32(textBox4.Text))]; message += "Name: " + c.getCourseName() + "\n"; message += "Sequence: " + c.getCourseSequence() + "\n"; MessageBox.Show(message); } else { MessageBox.Show("Course not found"); } } }