Can´t change cell color in datagridview

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.BackCo开发者_如何学Pythonlor = 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!!

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You are setting the style of a Row, not the cell (DataGridViewCell).

row.Cells["dc"].Style.BackColor = Color.Red;

---

Try this:

Use the "Style" property ->

DataGridView1.Item(ColumnIndex, RowIndex).Style.BackColor = Color
DataGridView1.Item(ColumnIndex, RowIndex).Style.ForeColor = Color

or

DataGridView1.CurrentCell.Style.BackColor = Color
DataGridView1.CurrentCell.Style.ForeColor = Color

Hope this answers your question.

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Have you tried using the CellFormatting event, there you can check the value of the current cell and then change the BackColor

---

To swap the font color, you need alter the ForeColor property, try this way:

row.Cells["dc"].Style.ForeColor = Color.Red;

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This should be solved if you use DataGridViewCell.Style.ForeColor, instead of DefaultCellStyle.BackColor.