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using System;
using System.Text;
using System.Windows.Forms;
using Microsoft.Win32;

namespace WindowsFormsApplication4
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        public static byte[] HexStringToByteArray(String hexString)
        {
            int start = 0;
            if (hexString[0] == ''0'' && (hexString[1] == ''x'' || hexString[1] == ''X''))
                start = 2;
            byte[] bytes = new byte[(hexString.Length - start) / 2];
            for (int i = start, len = hexString.Length; i < len; i += 2)
                bytes[i / 2] = Convert.ToByte(hexString.Substring(i, 2), 16);
            return bytes;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //打開注冊表 修改鍵值
            RegistryKey key = Registry.CurrentUser.OpenSubKey(@"SOFTWARE\ORL\WinVNC3", true);
            var str = "bab3aefe 0f1125fb";
            var bytes = HexStringToByteArray(str.Replace(" ", ""));
            try
            {
                //byte[] array = (byte[])key.GetValue("Password");//獲取Password值的字節數組
                //string decoded = System.Text.Encoding.UTF8.GetString(array);//將字節數組轉換成字符串
                //decoded = decoded.Replace("\0", String.Empty);//由于將字節數組轉換成字符串的過程中，一般會包含\0字符，所以要將它替換成空字符串，否則顯示會有問題
                //textBox1.Text = decoded;
                //byte[] bytes = (byte[])key.GetValue("Password");
                //if (bytes == null || bytes.Length < 3)
                //{
                key.SetValue("Password", bytes, RegistryValueKind.Binary);
                //}
            }
            catch
            {
            }
            MessageBox.Show("ok");
        }
    }
}