I've a simple form with a datagridview showing values from a ms sql table.
I want that values over 400 in column of name "dc" become red (FONT IN RED).
I've tried it over and over but I can´t get it done. Here's the code:

```
foreach (DataGridViewRow row in this.dataGridView1.Rows)
{
    int cellval = Convert.ToInt32(row.Cells["dc"].Value);
    if (cellval > 400)
    {
        row.DefaultCellStyle.BackColor = Color.Red;
        MessageBox.Show("O valor da célula é " + cellval, "WLic2010", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
    }
}

```

Funiest, the thing of the MessageBox really proves that it understands my request as it only pops with the values over 400.

Help please!!