asp.net 中获取中文首字母的代码-亲测

来源：互联网发布：炉石传说网络连接超时编辑：程序博客网时间：2024/04/28 03:25

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Text.RegularExpressions;
using System.Text;

public partial class baikeWeb_test : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {

}
}

    static public string GetChineseSpell(string strText)
    {
        int len = strText.Length;
        string myStr = "";
        for (int i = 0; i < len; i++)
        {
            myStr += getSpell(strText.Substring(i, 1).ToUpper());
        }
        //可以返回所有的中文字符的首字母
        //return myStr;
        return getSpell(strText.Substring(0, 1)).ToUpper();
    }

    static 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)(97 + i) });
                }
            }
            return "*";
        }
        else return cnChar;
    }

    /// <summary>
    /// 获取中文首字母
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void Button1_Click(object sender, EventArgs e)
    {
      string alert= GetChineseSpell(this.TextBox1.Text.ToString().Trim());
      Response.Write("<script> alert(/"你输入的中文的首字母是:"+alert+"/")</script>");
    }
}