using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;

public class Test
{
	public static void Main()
	{
		var text = "Ort Lieferadresse: deliveryAdress\r\nReferenz: reference\r\nLademittel: loading\r\nPlombennummer: plombe\r\nBemerkung: remarks";
    	var pattern = @"^Ort Lieferadresse: (?<deliveryAdress>[^\r\n]*)\r?$|^Referenz: (?<reference>[^\r\n]*)\r?$|^Lademittel: (?<loading>[^\r\n]*)\r?$|^Plombennummer: (?<plombe>[^\r\n]*)\r?$|^Bemerkung: (?<remarks>[^\r\n]*)\r?$";
    	var results = Regex.Matches(text, pattern, RegexOptions.Multiline)
    		.Cast<Match>()
    		.SelectMany(m => m.Groups.Skip(1))
    		.Where(n => n.Success);
        foreach (Group grp in results)
        	Console.WriteLine("{0}: {1}", grp.Name, grp.Value);
	}
}