private static string BuildTijden(Moment[] momenten)
{
var builder = new StringBuilder();
builder.AppendLine("<table>");
foreach(var datum in momenten.Select(m => string.Format("<tr><th style=\"text-align: left;\">{0}</th><td>{1} - {2}</td></tr>", m.Datum, m.Begintijd, m.Eindtijd))){
builder.AppendLine(datum);
}
builder.AppendLine("</table>");
return builder.ToString();
}