using System.Text;namespace GACDemo
{
    public class Function
    {
        //计算字符串长度，中文及全角算1，其它算0.5
        public static int GetStringLength(string text)
        {
            int Len = 0;
            //记录非中文、非全角字符为0.5个长度
            float charLen = 0;
            char[] chars = text.ToCharArray();
            for (int i = 0; i < chars.Length; i++)
            {int charLength = Encoding.UTF8.GetByteCount(chars[i].ToString());
                if (charLength == 3)
                {
                    Len++;
                }
                else
                {
                    if (charLen == 0.5)
                    {
                        charLen = 0;
                    }
                    else
                    {
                        charLen = 0.5f;
                        Len++;
                    }
                }
            }
            return Len;
        }
    }
}

using System;
using GACDemo;namespace gacwebdemo
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            Response.Write(Function.GetStringLength("hello"));
        }
    }
}