private void AddStudentsButton_Click(object sender, EventArgs e)
{
AddStudent form = new AddStudent();
form.Show();
this.Hide();
}
private void UpdateStudentBtn_Click(object sender, EventArgs e)
{
if (StudentsGridView.SelectedCells.Count != 0)
{
int row = StudentsGridView.SelectedCells[0].RowIndex;
int id = Convert.ToInt32(StudentsGridView.Rows[row].Cells[0].Value);
AddStudent form = new AddStudent(id);
form.Show();
this.Hide();
}
}