C#应用下的txt文件写入

方法如下：

        //file storage function
        public bool txt_file_generate(Dictionary<int, string> dic_val)
        {
            FolderBrowserDialog my_diaglog = new FolderBrowserDialog();
            string save_path = string.Empty;
            bool save_ok;
            string val = null;
            string file_name = DateTime.Now.ToString("yyyyMMddHHmmss") + "_Accurtestlogs.txt";
            if (my_diaglog.ShowDialog() == DialogResult.OK)
            {
                save_path = my_diaglog.SelectedPath + "\\" + file_name;
            }
            FileStream fs = new FileStream(save_path, FileMode.Append);
            StreamWriter sw = null;
            sw = new StreamWriter(fs);
            foreach (KeyValuePair<int, string> pair in dic_val)
            {
                sw.WriteLine(pair.Value);
            }
            sw.Close();
            fs.Close();
            save_ok = true;
            return save_ok;
        }