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private void dataGridView1_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
{
foreach (DataGridViewRow dgv in dataGridView1.Rows)
{
if (dgv.Cells[0].Value != null)
{
switch (dgv.Cells[0].Value.ToString())
{
case "1":
dgv.Cells[1].Style.BackColor = Color.Red;
break;
case "2":
dgv.Cells[1].Style.BackColor = Color.Yellow;
break;
case "3":
dgv.Cells[1].Style.BackColor = Color.Blue;
break;
default:
dgv.Cells[1].Style.BackColor = Color.Green;
break;
}
}
}
}