Powershell ODBC , keine Daten

  try{
        $DSN = Get-OdbcDsn -Name "MyDSN" -DsnType "User" -Platform "32-bit" -DriverName "Driver do Microsoft Access (*.mdb)"  
        #Verbindung aufbauen
        $conn = new-object system.data.odbc.odbcconnection
        $conn.connectionstring = ("DSN=MyDSN")  
        $conn.Open()

        $SQL= "SELECT * From AnonymousTable WHERE FieldValue = " + $gui_txtorderID.Text + ";"     
        #Kontrolle und ggfls Haltemarke
        Write-Host $SQL
        $cmd = New-Object System.Data.ODBC.ODBCCommand
        $cmd = $conn.CreateCommand()
        $cmd.CommandText = $SQL
        $cmd.Connection = $conn
    
        $Datenadapter=New-Object System.Data.ODBC.ODBCDataAdapter($SQL,$conn)
        $Datenadapter.SelectCommand = $cmd

        $table = New-Object System.Data.DataTable
        $Datenadapter.Fill($table)
        #$table = $Dataset.Tables
        $table |ft -Autosize
    }catch{
        Write-Host $_
    }