private void button1_Click(object sender, EventArgs e)
{
ClassFile obj = new ClassFile("students.dat");
List <Student> std = obj.ReadStudent();
DataGridViewUtils.StudentToGrid(std, dataStudent);
}
private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
ClassFile obj = new ClassFile(openFileDialog1.FileName);
List <Student> students = obj.ReadStudent();
DataGridViewUtils.StudentToGrid(students, dataStudents);
}
}