This post originated from an RSS feed registered with .NET Buzz by -. Original Post: Häufigkeiten von Wörtern in einer Liste berechnen Feed Title: Norbert Eder - Living .NET Feed URL: http://feeds.feedburner.com/NorbertEder-Livingnet Feed Description: Copyright (c)2005, 2006 by Norbert Eder Latest .NET Buzz Posts Latest .NET Buzz Posts by - Latest Posts From Norbert Eder - Living .NET

public class NameCounterList : List<string>
{
    private Dictionary<string, int> _names = 
        new Dictionary<string, int>();

    public new void Add(string item)
    {
        base.Add(item);

        if (_names.ContainsKey(item.ToLower()))
            _names[item.ToLower()]++;
        else
            _names.Add(item.ToLower(), 1);
    }

    public new void Clear()
    {
        base.Clear();
        _names.Clear();
    }

    public override string ToString()
    {
        StringBuilder sb = new StringBuilder();
        if (this._names.Count > 0)
        {
            Dictionary<string, int>.Enumerator en = 
                this._names.GetEnumerator();
            while (en.MoveNext())
            {
                sb.Append(en.Current.Key);
                sb.Append(": ");
                sb.Append(en.Current.Value.ToString());
                sb.Append(System.Environment.NewLine);
            }
        }
        return sb.ToString();
    }
}

NameCounterList ncl = new NameCounterList();
ncl.Add("Peter");
ncl.Add("Harry");
ncl.Add("Sabine");
ncl.Add("Sabine");
ncl.Add("Jörg");
ncl.Add("Harry");
ncl.Add("Harry");
Console.WriteLine(ncl.ToString());

peter: 1
harry: 3
sabine: 2
jörg: 1