读取记事本文件放到richTextBox1

private void button1_Click(object sender, EventArgs e) 
        {
            FileStream fs = new FileStream("E:\\万年康\\Google Earth\\google earth 代码\\WindowsFormsApplication3\\data.txt",FileMode.Open );
            StreamReader f_streamReader = new StreamReader(fs);
            f_streamReader.BaseStream.Seek(0,SeekOrigin.Begin );
            this.richTextBox1.Text = "";
            string strline = f_streamReader.ReadLine();
            while (strline != null)
            {
                this.richTextBox1.Text += strline + "\n";
                strline = f_streamReader.ReadLine();
            }
            f_streamReader.Close();
        }