unity 内容输出到指定路径下的txt中

写入txt文件，最后需要关闭写入流。

void OutputString()
{
        test_path="TxtFiles/test.txt";
        StreamWriter sw = new StreamWriter(test_path);
        sw.WriteLine("输出时间：" + DateTime.Now.ToString());
        sw.WriteLine("输出内容：需要放到txt中的内容。");
        sw.Close();
        List<string> NameList=new List<string>();
        StreamWriter sw = new StreamWriter(test_path);
        foreach (string Name in NameList)
        {
            sw.WriteLine("输出时间：" + DateTime.Now.ToString());
            sw.WriteLine("输出内容："+ Name);
        }
        sw.Close();
}