C# 数字转换

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            int rem, n = int.Parse(textBox1.Text);
            while (n > 0)
            {
                rem = n % 10;
                textBox2.Text = digitArray[rem] + textBox2.Text;
                n /= 10;
            }
        }
          
      

        string[] digitArray = new string[]{"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};

        private void Form1_Load(object sender, EventArgs e)
        {
           /*digitArray[0] = "零";
            digitArray[1] = "壹";
            digitArray[2] = "贰";
            digitArray[3] = "叁";
            digitArray[4] = "肆";
            digitArray[5] = "伍";
            digitArray[6] = "陆";
            digitArray[7] = "柒";
            digitArray[8] = "捌";
            digitArray[9] = "玖";*/
        }

                private void button2_Click(object sender, EventArgs e)
        {
        textBox1.Clear();
            textBox2.Clear();
        }
    }
        }