c# IComparer比较字符串

例如：幻灯片50，幻灯片6，幻灯片40
排序完后：幻灯片6，幻灯片40，幻灯片50

public class PathCompare : IComparer<string>{    public int Compare(string x, string y)    {        string[] aBuf = x.Split('\\');        string[] bBuf = y.Split('\\');        string[] aNameBuf = aBuf[aBuf.Length - 1].Split('.');        string[] bNameBuf = bBuf[bBuf.Length - 1].Split('.');        if (aNameBuf[0].Length > bNameBuf[0].Length)        {            return 1;        }        else if (aNameBuf[0].Length < bNameBuf[0].Length)        {            return -1;        }        else if (aNameBuf[0].Length == bNameBuf[0].Length)        {            return aNameBuf[0].CompareTo(bNameBuf[0]);        }        return 0;    }}