public String findStudent(Student p)
{
Student c;
try
{
c = (Student)this.students[p.getStudentId()];
}
catch (NullReferenceException e)
{
c = null;
}
if (c != null)
{
return c.getStudentId();
}
else
{
return "";
}
}
private void btnCreateStudent_Click(object sender, EventArgs e)
{
String errors = "";
if (txtStudentId.Text.Equals(""))
{
errors += "\n-Stuent ID required.";
}
if (txtFirstName.Text.Equals(""))
{
errors += "\n-First Name required.";
}
if (txtLastName.Text.Equals(""))
{
errors += "\n-Last Name required.";
}
if (txtEmail.Text.Equals(""))
{
errors += "\n-Email required.";
}
//check if already exist or not
foreach (Student s in students)
{
if (s.getStudentId() == txtStudentId.Text)
{
errors += "\n-Student Id Already exists.";
break;
}
}
if (errors == "")
{
//create a dept
Student newStudent = new Student(txtStudentId.Text, txtFirstName.Text, txtLastName.Text, txtEmail.Text);
students.Add(newStudent.getStudentId(), newStudent);
String message = "Student added";
MessageBox.Show(message);
}
else
{
MessageBox.Show(errors);
}
}
// to add student to the course
public void AddStudent(Student student)
{
this.students.Add(student.getStudentId(), student);
}