asp.net 中获取中文首字母的代码 亲测

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];
     &nbs