Powershell studio datagridview if statement - powershell

Question

I have a cellpainting event and am trying to correct/clean this IF statement up. I think I'm getting lost in my parenthess. Is someone able to take a second look at this? Thanks for your time.
My end goal is the IF statemant to be: Column 1 date older than 42 days or not $null and column 4 value = "SEP"
$datagridview1_CellPainting=[System.Windows.Forms.DataGridViewCellPaintingEventHandler]{
$SEPreturnlimit = "{0:MM/dd/yyyy}" -f (get-date).AddDays(-42)
if ((($_.ColumnIndex -eq 1 -and ([datetime]$_.Value -le $SEPreturnlimit -and [datetime]$_.Value.ToString() -ne $null))) -and ($datagridview1.rows .Cells[4].Value -eq "SEP")) #Column 1 date older than 42 days or not $null **and** column 4 value = "SEP"
{
$this.Rows[$_.RowIndex] | %{ $_.DefaultCellStyle.BackColor = 'crimson' } #Color Row
}

Answer 1

I would split the if conditions into separate nested ifs and also add a try..catch
$datagridview1_CellPainting = [System.Windows.Forms.DataGridViewCellPaintingEventHandler] {
if ($_.ColumnIndex -eq 1 -and $datagridview1.rows.Cells[4].Value -eq 'SEP') {
$SEPreturnlimit = (Get-Date).AddDays(-42).Date # set to 42 days back at midnight
try {
# if we succeed in parsing out a datetime object
$date = [datetime]$_.Value
# test if we have a DateTime object and if that date is older than the reference date
if (($date) -and $date-le $SEPreturnlimit) {
# cannot check this myself, but shouldn't that simply be
# $this.Rows[$_.RowIndex].DefaultCellStyle.BackColor = 'crimson'
$this.Rows[$_.RowIndex] | ForEach-Object{ $_.DefaultCellStyle.BackColor = 'crimson' } #Color Row
}
}
catch { <# do nothing #> }
}
}

Answer 2

I think I fixed the placement, but check the logic. Have a look at it this way
if
(
(
$_.ColumnIndex -eq 1 -and
(
[datetime]$_.Value -le
$SEPreturnlimit -and
[datetime]$_.Value.ToString() -ne
$null
)
) -and
(
$datagridview1.rows .Cells[4].Value -eq
'SEP'
)
) #Column 1 date older than 42 days or not $null **and** column 4 value = "SEP"