C sharp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;
}