C#windosfrom 数据提取并转换位置

Question

怎么把richTextBox1中的身份中提取出来放到richTextBox2

Answer 1

 private void button3_Click(object sender, EventArgs e)
        {
            string str = richTextBox1.Text;
            string[] lines = str.Split(new string[] { "\r\n" }, StringSplitOptions.None);
            for (int i = 0; i < lines.Length; i++)
            {
                Console.WriteLine(lines[i]);
                string[] linecell = lines[i].Split(new char[] { ',' });
                richTextBox2.Text = richTextBox2.Text + "\r\n" + linecell[2];
            }
        }