Untested Robocopy progress Bar.txt

function Copy-File {
param( [string]$from, [string]$to)
$ffile = [io.file]::OpenRead($from)
$tofile = [io.file]::OpenWrite($to)
Write-Progress `
    -Activity ("Copying file " + $filecount + " of " + $files.count) `
    -status ($from.Split("\")|select -last 1) `
    -PercentComplete 0
try {
    $sw = [System.Diagnostics.Stopwatch]::StartNew();
    [byte[]]$buff = new-object byte[] 65536
    [long]$total = [long]$count = 0
    do {
        $count = $ffile.Read($buff, 0, $buff.Length)
        $tofile.Write($buff, 0, $count)
        $total += $count
        if ($total % 1mb -eq 0) {
            if([int]($total/$ffile.Length* 100) -gt 0)`
                {[int]$secsleft = ([int]$sw.Elapsed.Seconds/([int]($total/$ffile.Length* 100))*100)
                } else {
                [int]$secsleft = 0};
            Write-Progress `
                -Activity ([string]([int]($total/$ffile.Length* 100)) + "% Copying file")`
                -status ($from.Split("\")|select -last 1) `
                -PercentComplete ([int]($total/$ffile.Length* 100))`
                -SecondsRemaining $secsleft;
        }
    } while ($count -gt 0)
$sw.Stop();
$sw.Reset();
}
finally {
    $ffile.Close()
    $tofile.Close()
    }
}

$srcdir = "C:\Source;
$destdir = "C:\Dest";
[int]$filecount = 0;
$files = (Get-ChildItem $SrcDir | where-object {-not ($_.PSIsContainer)});
$files|foreach($_){
$filecount++
if ([system.io.file]::Exists($destdir+$_.name)){
                [system.io.file]::Delete($destdir+$_.name)}
                Copy-File -from $_.fullname -to ($destdir+$_.name)
};