C# Code:

/// <summary>
/// C#使用LCMapString API函数进行中文简繁体互相转换
/// </summary>
public static class ChineseConverter
{
   internal const int LOCALE_SYSTEM_DEFAULT = 0x0800;
   internal const int LCMAP_SIMPLIFIED_CHINESE = 0x02000000;
   internal const int LCMAP_TRADITIONAL_CHINESE = 0x04000000;
   
   /// <summary>
   /// 使用OS的kernel.dll做為簡繁轉換工具，只要有裝OS就可以使用，不用額外引用dll，但只能做逐字轉換，無法進行詞意的轉換
   /// <para>所以無法將電腦轉成計算機</para>
   /// </summary>
   [DllImport("kernel32", CharSet = CharSet.Auto, SetLastError = true)]
   internal static extern int LCMapString(int Locale, int dwMapFlags, string lpSrcStr, int cchSrc, [Out] string lpDestStr, int cchDest);
   
   /// <summary>
   /// 繁體轉簡體
   /// </summary>
   /// <param name="pSource">要轉換的繁體字：體</param>
   /// <returns>轉換後的簡體字：体</returns>
   public static string ToSimplified(string pSource)
   {
      String tTarget = new String(' ', pSource.Length);
      int tReturn = LCMapString(LOCALE_SYSTEM_DEFAULT, LCMAP_SIMPLIFIED_CHINESE, pSource, pSource.Length, tTarget, pSource.Length);
      return tTarget;
   }
   
   /// <summary>
   /// 簡體轉繁體
   /// </summary>
   /// <param name="pSource">要轉換的繁體字：体</param>
   /// <returns>轉換後的簡體字：體</returns>
   public static string ToTraditional(string pSource)
   {
      String tTarget = new String(' ', pSource.Length);
      int tReturn = LCMapString(LOCALE_SYSTEM_DEFAULT, LCMAP_TRADITIONAL_CHINESE, pSource, pSource.Length, tTarget, pSource.Length);
      return tTarget;
   }
   
   //来源:C/S框架网(www.csframework.com) QQ:1980854898