change the backcolor in a datagridview

Question

I tried to change the backcolor in a specific column when the cell value changed. I didn't find the method to do that and I don't know how to do that.

ok ----> backcolor in green.
nok ----> backcolor in red.

thank you very much for your help.

private void timer2_Tick(object sender, EventArgs e)
{
    int count = 0;
    foreach (DataRow dr in ds.Tables[0].Rows)
    {
        String StartCourse = dr[0].ToString();
        string EndCourse = dr[1].ToString();
        DateTime SystemTime = Convert.ToDateTime(DateTime.Now);
        DateTime StartTime = Convert.ToDateTime(StartCourse);
        DateTime EndTime = Convert.ToDateTime(EndCourse);

        if (StartTime.TimeOfDay.Ticks <= SystemTime.TimeOfDay.Ticks && SystemTime.TimeOfDay.Ticks < EndTime.TimeOfDay.Ticks)
            {
                 ds.Tables[0].Rows[count][5] = "ok";      
            }

        else
            {
                ds.Tables[0].Rows[count][5] = "nok";
            }

        count++;
        dataGridView1.DataSource = ds.Tables[0];

    }
}

Answer 1

you can call this Procedure:

UPDATED

void ColorGrid()
{
     foreach (DataGridViewRow row in dataGridView1.Rows) 
     {
        if (row.Cells[5].Value.ToString() == "ok") 
        {
            row.DefaultCellStyle.BackColor = Color.Green; 
        }
        else
        {
            row.DefaultCellStyle.BackColor = Color.Red; 
        }
     }
}

Answer 2

See the DataGridViewColumn.DefaultCellStyle property. This allows you to set a DataGridViewCellStyle for a column. This class has a BackColor property.

See the following MSDN article for more detail:

Cell Styles in the Windows Forms DataGridView Control

Answer 3

Try this:

 foreach (DataGridViewRow row in this.DataGridView1.Rows)
        {
            if (row.Cells[5].Text == "ok")
            {
                row.DefaultCellStyle.BackColor = Color.Green;
            }
            else
            {
                row.DefaultCellStyle.BackColor = Color.Red;
            }
        }

Regards

Answer 4

I'm doing this on my own project.

 foreach (DataGridViewRow row in this.dataGridView1.Rows)
 {

     row.DefaultCellStyle.BackColor = (row.Cells[5].Text == "ok")? Color.Green:Color.Red;
 }

If that still didn't work, try delete that datagridview and add it again. Be sure to name it again as dataGridView1 and attached its corresponding events.