Check last line `r`n

Hi,

I am trying to split the source file based on specific size.

<code>

param(
[string]$fromFolder,
[string]$rootName,
[string]$ext,
[int]$fl_size
)

$NumOfParams=4
If (($PSBoundParameters.values | Measure-Object | Select-Object -ExpandProperty Count) -lt $NumOfParams)
{"`nPlease provide all the parameters"
"Usage : .\split_src_file.ps1 <fromFolder> <file_name> <file_ext> <file_size_to_split>`n"
EXIT}
 
$from = "{0}{1}.{2}" -f ($fromFolder, $rootName, $ext)
$fromFile = [io.file]::OpenRead($from)
$buff = new-object byte[] $fl_size
 
$count = $idx = 0
 
try {
    "`nSplitting $from using $fl_size bytes per file.`n"
    do {
        $count = $fromFile.Read($buff, 0, $buff.Length)
        if ($count -gt 0) {
            $to = "{0}{1}_{2}.{3}" -f ($fromFolder, $rootName, $idx, $ext)
            $toFile = [io.file]::OpenWrite($to)
            try {
                $tofile.Write($buff, 0, $count)
    $tofile.Close()
    $chk=Get-Content $to | select -Last 1
    Write-Host $chk
    $chk -match '[`n]'
            } finally {
                $tofile.Close()
            }
        }
        $idx ++
    } while ($count -gt 0)
}
finally {
    $fromFile.Close()
}

</code>

I got the above code to split the file. But it is splitting the row at the end of the file, if file exceeds that specific size.

Actual Record : Nice,,KEN,,6940,Y,20001,001100,STATE,IND,4,Pub,20100823,20101217,F,,,,,,N,,,,,,,,,,,[CR][LF]

For example, My first split file contains (Nice,,KEN,,6940,Y,20001,00110) at the end of the file and my second file contains the remaining of that record (0,STATE,IND,4,Pub,20100823,20101217,F,,,,,,N,,,,,,,,,,,[CR][LF])

Now, I want to check my first split file for [CR][LF] or `r`n at the end of the file, if it doesn't contain then include that in the second file. Please let me know how to achieve this.