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using System;
using System.Collections.Generic;
using System.Text;
namespace StringOption
{
public class GetStringSpell
{
/// <summary>
/// 提取汉字首字母
/// </summary>
/// <param name="strText">需要转换的字</param>
/// <returns>转换结果</returns>
public static 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;
}
/// <summary>
/// 把提取的字母变成大写
/// </summary>
/// <param name="strText">需要转换的字符串</param>
/// <returns>转换结果</returns>
public static string GetLowerChineseSpell(string strText)
{
return GetChineseSpell(strText).ToLower();
}
/// <summary>
/// 把提取的字母变成大写
/// </summary>
/// <param name="myChar">需要转换的字符串</param>
/// <returns>转换结果</returns>
public static string GetUpperChineseSpell(string strText)
{
return GetChineseSpell(strText).ToUpper();
}
/// <summary>
/// 获取单个汉字的首拼音
/// </summary>
/// <param name="myChar">需要转换的字符</param>
/// <returns>转换结果</returns>
public static string getSpell(string myChar)
{
byte[] arrCN = System.Text.Encoding.Default.GetBytes(myChar);
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 System.Text.Encoding.Default.GetString(new byte[] { (byte)(65 + i) });
}
}
return "_";
}
else return myChar;
}
}
}
