You can use cell formate event or use following code.
http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.cellformatting%28v=vs.110%29.aspx[
^]
for (int i = 0; i < dataGridView1.Rows.Count; i++)
{
if (dataGridView1.Rows[i].Cells["Make"].Value.ToString().ToUpper().Contains("ro"))
{
dataGridView1.Rows[i].Cells["Make"].Style = new DataGridViewCellStyle() { Font = new Font(dataGridView1.Font, FontStyle.Bold), ForeColor = Color.DodgerBlue };
}
if (dataGridView1.Rows[i].Cells["Model"].Value.ToString().ToUpper().Contains(txtBox1.Text))
{
dataGridView1.Rows[i].Cells["Model"].Style = new DataGridViewCellStyle() { Font = new Font(dataGridView1.Font, FontStyle.Bold), ForeColor = Color.DodgerBlue };
}
}
if any question then let me know.
-> M.U