private void Dnevnic_Load(object sender, EventArgs e)
{
Marks m = new Marks();
m.OpenConnection(connectionString);
dataGridView1.DataSource = m.GetMarksByNzachStudent(nzach);
m.CloseConnection();
dataGridView1.Columns[1].Width = 55;
dataGridView1.Columns[2].Width = 65;
dataGridView1.Columns[3].Width = 210;
dataGridView1.ColumnHeadersDefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
}
