using System;
using System.Windows.Forms;

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

        private void tbString_TextChanged(object sender, EventArgs e)
        {
            tbHex.Clear();
            char[] chars = tbString.Text.ToCharArray();
            string hexString = "{";

            foreach (char currentChar in chars)
            {
                string hex = Convert.ToByte(currentChar).ToString("x2").ToUpper();
                hexString += "0x" +  hex + ", ";
            }

            hexString += "}";
            tbHex.Text = hexString;
        }
    }
}