【整理】C# WinFrom 中如何txt内容与dataGridView互动

  题目：  txt内容为固定格式：帐号----密码----备注（用4个“-”分隔）

             TXT内容如下:
                baidu----123456----百度帐号
                hao123----123456----hao123帐号
                duowan----123456----多玩帐号


          要求显示在dataGridView效果如下表格

               帐号      密码       备注
            baidu     123456     baidu帐号
            hao123    123456     hao123帐号
            duowan    123456     多玩帐号   

txt文档---》datagridview代码：（已验证）

private void button15_Click(object sender, EventArgs e)
        {
                    //新建一个datatable用于保存读入的数据
                    DataTable dt = new DataTable();

                    //给datatable添加三个列
                    dt.Columns.Add("帐号", typeof(String));
                    dt.Columns.Add("密码", typeof(String));
                    dt.Columns.Add("备注", typeof(String));

                    //读入文件
                   StreamReader reader = new StreamReader(@"11\11.txt", Encoding.Default);
                  
                        //循环读取所有行
                        while (!reader.EndOfStream)
                        {
                            //将每行数据，用-分割成3段
                            string[] data = reader.ReadLine().Replace("----", "-").Split('-');

                            //新建一行，并将读出的数据分段，分别存入3个对应的列中
                            DataRow dr = dt.NewRow();
                            dr[0] = data[0];
                            dr[1] = data[1];
                            dr[2] = data[2];

                            //将这行数据加入到datatable中
                            dt.Rows.Add(dr);
                        }
                  

                    //将datatable绑定到datagridview上显示结果
                    dataGridView2.DataSource = dt;

        }

datagridview---》txt文档代码：（已验证）

 

        private void button9_Click_1(object sender, EventArgs e)
        {

            FileStream fileStream = new FileStream(@"11\11.txt", FileMode.OpenOrCreate);
            StreamWriter streamWriter = new StreamWriter(fileStream, System.Text.Encoding.Unicode);

            StringBuilder strBuilder = new StringBuilder();

            try
            {
                for (int i = 0; i < dataGridView2.Rows.Count; i++)
                {
                    strBuilder = new StringBuilder();
                    for (int j = 0; j < dataGridView2.Columns.Count; j++)
                    {
                        strBuilder.Append(dataGridView2.Rows[i].Cells[j].Value.ToString() +"----");
                    }
                    strBuilder.Remove(strBuilder.Length - 1, 1);
                    streamWriter.WriteLine(strBuilder.ToString());
                }
            }
            catch (Exception ex)
            {
                string strErrorMessage = ex.Message;
            }
            finally
            {
                streamWriter.Close();
                fileStream.Close();
            }

          
        }