Datagridview compare cell string

I need to compare 2 String-Values in one cell.(if in cell 1 is a string like ‘DPS’ and ‘MAN’)
But I dont know why my && Operator does not work like i think. I dont get an Result.

Can someone explain what I am doing wrong here?

private void Warning()
{
    foreach (DataGridViewRow row in dataGridView4.Rows)
        if (row.Cells[1].Value.ToString() == "DPS" 
            && row.Cells[1].Value.ToString() == "MAN")
        {
            panelWarnung.BackColor = Color.Red;
        }
        else
        {
            panelWarning.BackColor = Color.LightGreen;
        }
}

SOLUTION

This works!

foreach (DataGridViewRow row in dataGridView4.Rows)
            if (row.Cells[1].Value.ToString().Contains("DPS") == row.Cells[1].Value.ToString().Contains("MAN"))
                panelWarning.BackColor = Color.Red;

>Solution :

if DPS and MAN is in the cell the warningPanel should turn red

That’s

row.Cells[1].Value.ToString().Contains("DPS") 
    && row.Cells[1].Value.ToString().Contains("MAN")

Contains tests whether the string is present somewhere within the cell. == tests whether the entire whole string in the cell is exactly equal to some value.. And no variable can be simultaneously equal to two different values

Contains will permit you to have cell values like:

MANDPS
DPS,MAN
DPSINGH'S MANAGER

🙂