效率比微软版好N倍的简繁转换类

参考http://blog.csdn.net/farawayplace613/archive/2008/09/14/2910527.aspx

using System.Runtime.InteropServices;
using System.Text;

namespace GreenLoogDS.DAL
{
    public class ChineseConverter
    {
        private static Encoding GB2312 = Encoding.GetEncoding(0x3a8);
        private const int LCMAP_SIMPLIFIED_CHINESE = 0x2000000;
        private const int LCMAP_TRADITIONAL_CHINESE = 0x4000000;

        [DllImport("kernel32.dll", EntryPoint = "LCMapStringA")]
        public static extern int LCMapString(int Locale, int dwMapFlags, byte[] lpSrcStr, int cchSrc, byte[] lpDestStr, int cchDest);
        public static string Convert(string text, ChineseConversionDirection direction)
        {
            byte[] lpSrcStr = null;
            lpSrcStr = GB2312.GetBytes(text);
            byte[] lpDestStr = new byte[lpSrcStr.Length];
            switch (direction)
            {
                case ChineseConversionDirection.TraditionalToSimplified:
                    LCMapString(0x804, LCMAP_SIMPLIFIED_CHINESE, lpSrcStr, -1, lpDestStr, lpSrcStr.Length);
                    break;
                case ChineseConversionDirection.SimplifiedToTraditional:
                    LCMapString(0x804, LCMAP_TRADITIONAL_CHINESE, lpSrcStr, -1, lpDestStr, lpSrcStr.Length);
                    break;
            }
            return GB2312.GetString(lpDestStr);
        }
    }
    public enum ChineseConversionDirection
    {
        SimplifiedToTraditional,
        TraditionalToSimplified
    }
}