裡面的richTextBox1,2是兩個多行的文本框,richTextBox1是輸入框,richTextBox2是結果框
button5_Click 是畫面上的轉換按鈕

private void button5_Click(object sender, System.EventArgs e)


...{

this.richTextBox2.Text = "";

string tempValue = "";


foreach(char c in this.richTextBox1.Text)


...{

tempValue = ((int)c).ToString("X2").ToUpper();

if(tempValue.Length >=4)


...{

this.richTextBox2.Text += "\u"+tempValue;

}

else


...{

this.richTextBox2.Text += c.ToString();

}

}



}
}