private void ÖğrenciGüncelle_Load(object sender, EventArgs e)
{
ClassroomDal classroomDal = new ClassroomDal();
StudentDal studentDal = new StudentDal();
List <Student> studentItem = studentDal.GetAll().Where(w => w.Id == id).ToList(); // linq ile sorgu attık.
txtNameStudentUpdate.Text = studentItem[0].Name; // textbox'ın text'ini studentItem[0]'ın name'ine eşitledik.
txtSurnameStudentUpdate.Text = studentItem[0].Surname;
txtNumberStudentUpdate.Text = Convert.ToString(studentItem[0].Number);
cbxClassrooms.Text = studentItem[0].Classroom;
cbxClassrooms.DataSource = classroomDal.GetAll();
cbxClassrooms.DisplayMember = "Name";
this.Name = studentItem[0].Name;
}
