.NET获取汉字首字母

/// <summary>
/// 获取汉字首字母(可包含多个汉字)
/// </summary>
/// <param name="strText"></param>
/// <returns></returns>
public string GetChineseSpell(string strText)
{
int len = strText.Length;
string myStr = "";
for (int i = 0; i < len; i++)
{
myStr += getSpell(strText.Substring(i, 1));
}
return myStr;
}

public string getSpell(string cnChar)
  {
   byte[] arrCN = Encoding.Default.GetBytes(cnChar);
   if (arrCN.Length > 1)
   {
   int area = (short)arrCN[0];
   int pos = (short)arrCN[1];
   int code = (area << 8) + pos;
   int[] areacode = { 45217, 45253, 45761, 46318, 46826, 47010, 47297, 47614, 48119, 48119, 49062, 49324, 49896, 50371, 50614, 50622, 50906, 51387, 51446, 52218, 52698, 52698, 52698, 52980, 53689, 54481 };
   for (int i = 0; i < 26; i++)
   {
   int max = 55290;
   if (i != 25) max = areacode[i + 1];
   if (areacode[i] <= code && code < max)
   {
   return Encoding.Default.GetString(new byte[] { (byte)(65 + i) });
   }
   }
   return "*";
   }
   else
return cnChar;
}

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/// <summary>
/// 获取第一个汉字的首字母,只能输入汉字
/// </summary>
/// <param name="c"></param>
/// <returns></returns>
public string GetPYChar(string c)
{
byte[] array = new byte[2];
array = System.Text.Encoding.Default.GetBytes(c);
int i = (short)(array[0] - '') * 256 + ((short)(array[1] - ''));
if (i < 0xB0A1) return "*";
if (i < 0xB0C5) return "A";
if (i < 0xB2C1) return "B";
if (i < 0xB4EE) return "C";
if (i < 0xB6EA) return "D";
if (i < 0xB7A2) return "E";
if (i < 0xB8C1) return "F";
if (i < 0xB9FE) return "G";
if (i < 0xBBF7) return "H";
if (i < 0xBFA6) return "J";
if (i < 0xC0AC) return "K";
if (i < 0xC2E8) return "L";
if (i < 0xC4C3) return "M";
if (i < 0xC5B6) return "N";
if (i < 0xC5BE) return "O";
if (i < 0xC6DA) return "P";
if (i < 0xC8BB) return "Q";
if (i < 0xC8F6) return "R";
if (i < 0xCBFA) return "S";
if (i < 0xCDDA) return "T";
if (i < 0xCEF4) return "W";
if (i < 0xD1B9) return "X";
if (i < 0xD4D1) return "Y";
if (i < 0xD7FA) return "Z";
return "*";
}

原文地址:https://www.cnblogs.com/toloe/p/6889380.html