private void button8_Click(object sender, EventArgs e) { string message = ""; string id = (textBox11.Text); if (id == "") { MessageBox.Show("Enter student ID "); } else { if (students.ContainsKey((Convert.ToInt32(textBox11.Text)))) { Student s = (Student)students[(Convert.ToInt32(textBox11.Text))]; message += "First Name: " + s.getFirstName() + "\n"; message += "Last Name: " + s.getLastName() + "\n"; message += "Email: " + s.getEmail() + "\n"; MessageBox.Show(message); } else { MessageBox.Show("Course not found"); } } }
private void button7_Click(object sender, EventArgs e) { String error = ""; if (textBox6.Text.Equals("") || comboBox2.SelectedIndex < 0) { error += "The field can't be empty.\n"; } if (error == "") { foreach (Course c in courses.Values) { if (c.getCourseId() == Convert.ToInt32(comboBox2.SelectedItem.ToString())) { Student s = (Student)students[Convert.ToInt32(textBox6.Text)]; if (s == null) { MessageBox.Show("Student not found."); break; } if (c.findStudent(s) == 1) { MessageBox.Show("Student already exists."); } if (c.findStudent(s) == 0) { c.AddStudent(s); MessageBox.Show("Student: " + s.getFirstName() + " " + s.getLastName() + " added into course: " + c.getCourseName()); } } } } }