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

namespace TestChineseString
{
    class Program
    {
        #region Members

        public static string ConstChineseRegex = @"^[\u4e00-\u9fa5]+$";
        public static string ConstEnglishRegex = @"^[a-zA-Z_0-9]+$";
        public static string ConstChineseEnglishRegex = @"^[\u4e00-\u9fa5\w]+$";

        #endregion

        static void Main(string[] args)
        {
            #region int
            string str = "123我中45有你";
            
            Console.WriteLine(GetLength(str));//13
            #endregion
            Console.ReadKey();
        }

        #region Methods

        public static int GetLength(string str)
        {
            int length = 0;

            int countChinese = 0;
            int countEnglish = 0;
            for (int i = 0; i < str.Length; i++)
            {
                char ch = str[i];

                if (IsEnglish(ch))
                {
                    countEnglish++;
                }
                else if (IsChinese(ch))
                {
                    countChinese++;
                }
            }

            length = countChinese * 2 + countEnglish;

            return length;
        }

        public static bool IsChinese(string text)
        {

            return System.Text.RegularExpressions.Regex.Match(text, ConstChineseRegex, System.Text.RegularExpressions.RegexOptions.Compiled).Success;
        }

        public static bool IsChinese(char ch)
        {
            return IsChinese(Convert.ToString(ch));
        }

        public static bool IsEnglish(string text)
        {

            return System.Text.RegularExpressions.Regex.Match(text, ConstEnglishRegex, System.Text.RegularExpressions.RegexOptions.Compiled).Success;
        }

        public static bool IsEnglish(char ch)
        {
            return IsEnglish(Convert.ToString(ch));
        }

        public static bool IsChineseEnglish(string text)
        {

            return System.Text.RegularExpressions.Regex.Match(text, ConstChineseEnglishRegex, System.Text.RegularExpressions.RegexOptions.Compiled).Success;
        }

        public static bool IsChineseEnglish(char ch)
        {
            return IsChineseEnglish(Convert.ToString(ch));
        }
        #endregion
    }


}