WinSCPUpload.ps1

try
{
    # Load WinSCP .NET assembly
    Add-Type -Path "C:\Program Files (x86)\WinSCP\WinSCPnet.dll"

    # Set up session options
    $sessionOptions = New-Object WinSCP.SessionOptions -Property @{
        Protocol = [WinSCP.Protocol]::Sftp
        HostName = "ftp hostname here"
        UserName = "ftp un here"
        Password = "ftp pw here"
        SshHostKeyFingerprint = "ssh fingerprint here"
    }

    $sessionOptions.AddRawSettings("ProxyPort", "0")
    $session = New-Object WinSCP.Session

     #Begin file upload to SFTP destination
    try
    {
        # Connect
        $session.Open($sessionOptions)

        # Transfer files
        $session.PutFiles($File, "/Export/*").Check()
        #move successfully transfered files to a Completed folder
        Move-Item $File -Destination $Destination -Force
    }
    finally #end Try
    {
        $session.Dispose()
    }
    exit 0
}
catch #end Try
{
    Write-Host "Error: $($_.Exception.Message)"
    exit 1
}