private void Form1_Load(object sender, EventArgs e)
{
var students = new StudentsBusiness();
students.DataObject = new StudentDataManagement();
dataGridView1.DataSource = students.ShowAll();
previous();
}
private void previous()
{
var students = new StudentsBusiness();
students.DataObject = new StudentDataManagement();
Student s = students.Prior();
txtFirstName.Text = s.FirstName;
txtLastName.Text = s.LastName;
txtDepartment.Text = s.Department;
txtId.Text = s.Id.ToString();
}
private void btndelete_Click(object sender, EventArgs e)
{
var students = new StudentsBusiness();
students.DataObject = new StudentDataManagement();
int id = Convert.ToInt32(txtId.Text);
students.Delete(id);
SchoolDbEntities db = new SchoolDbEntities();
dataGridView1.DataSource = db.Students.ToList();
}
private void btnsave_Click(object sender, EventArgs e)
{
var students = new StudentsBusiness();
students.DataObject = new StudentDataManagement();
Student s = new Student
{
FirstName = txtFirstName.Text,
LastName = txtLastName.Text,
Department = txtDepartment.Text
};
students.Add(s);
SchoolDbEntities db = new SchoolDbEntities();
dataGridView1.DataSource = db.Students.ToList();
}
