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  • 提取汉字首字母助手类:

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;

    namespace EatGood.BLL.FoodManage
    {
       public  class GetCNSpell
        {

                /// <summary>  
                /// 提取汉字首字母  
                /// </summary> 施彪 
                /// <param name="strText">需要转换的字</param>  
                /// <returns>转换结果</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;
                }
                /// <summary>  
                /// 把提取的字母变成小写  
                /// </summary>  
                /// <param name="strText">需要转换的字符串</param>  
                /// <returns>转换结果</returns>  
                public 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 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 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;
                }
            }
        }

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  • 原文地址:https://www.cnblogs.com/a1991322/p/2650689.html
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