SMS TextLength 비교

SMS 입력받고 데이타 길이 체크하는 처리부분.

 public partial class Form1 : Form
    {
        bool char_ASCIICODE = false;

        public Form1()
        {
            InitializeComponent();
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {           
            int length = Encoding.Default.GetBytes(this.textBox1.Text).Length;

            if (length > 80)
            {
                this.textBox1.Text = this.textBox1.Text.Substring(0, this.textBox1.TextLength - (char_ASCIICODE ? 1 : 2));
                char_ASCIICODE = false;
                this.textBox1.Select(this.textBox1.TextLength, 0);
                return;
            }
            length = Encoding.Default.GetBytes(this.textBox1.Text).Length;
            this.label1.Text = string.Format("{0}/80", length);
        }
       
        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar < 256)
                char_ASCIICODE = true;
            else
                char_ASCIICODE = true;
        }   
}

그리 어려운 코드가 아니라 주석도 없다!