To comma seperated list

gistfile1.cs

private string ToCommaSeperatedString<T>(IEnumerable<T> items, Func<T, string> property)
{
    if (items != null && items.Count() > 0)
    {
        List<string> values = new List<string>();

        foreach (T item in items)
        {
            values.Add(property.Invoke(item));
        }

        if (values.Count > 0)
        {
            return String.Join(", ", values);
        }
    }

    return String.Empty;
}