File Dialogue in Powershell

file_dialogue.ps1

Add-Type -AssemblyName System.Windows.Forms

Function Get-FileName($initialDirectory, $filter)
{
    
    $OpenFileDialog = New-Object System.Windows.Forms.OpenFileDialog
    $OpenFileDialog.initialDirectory = $initialDirectory
    $OpenFileDialog.filter = $filter
    $OpenFileDialog.ShowDialog() | Out-Null
    $OpenFileDialog.filename
    
}

Get-FileName -initialDirectory $scriptPath -filter "CSV Files(*.CSV;*.TXT)|*.CSV;*.TXT|All files (*.*)|*.*";