private void button3_Click(object sender, EventArgs e)
{
string fileName = @"C:\BackChat\MarkSheet\" + frm1.number + ".csv";
Save(fileName, dataGridView1);
dataGridView1.DataSource = frm1.PopulateTable(frm1.csvFile);
frm1.nextStudent();
frm1.getInfo();
showInfo();
}
