文件中用WriteLine追加内容的两种方法

           if (!Directory.Exists("C:\testll"))
            {
                Directory.CreateDirectory("C:\testll");
            }

            string LogAddress = "C:\testll\Test_Log.log";
            string LogAddress2 = "C:\testll\Test_Log2.log";

            //测试
            FileStream fs = new FileStream(LogAddress, FileMode.OpenOrCreate);
            using(StreamWriter swr = new StreamWriter(fs))
            {
                swr.WriteLine("Test1");
                swr.WriteLine("Test1");
                swr.WriteLine("Test1");
                swr.WriteLine("Test1");
                swr.WriteLine();
            }
            using(StreamWriter sw = new StreamWriter(LogAddress2, true))
            {
                sw.WriteLine("Test2");
                sw.WriteLine("Test2");
                sw.WriteLine("Test2");
                sw.WriteLine();
            }