string path = "D:\\AccountChecking\\Test.txt"; string content = "abcdefg\r\nhigklmn\r\nopqrst"; //操作文件夹对象,无则创建文件夹,可以一次创建多级 Directory.CreateDirectory("D:\\AccountChecking\\"); #region File-对于文件的典型操作,如复制、移动、重命名、创建、打开、删除和一次将追加到单个文件的类 //写文件 File.WriteAllText(path, content, Encoding.Default); File.WriteAllLines(path, content.Split(‘r‘), Encoding.Default); File.WriteAllBytes(path, Encoding.Default.GetBytes(content)); //追加内容 File.AppendAllText(path, content, Encoding.Default); //读文件 string content_t = File.ReadAllText(path, Encoding.Default); string[] content_s = File.ReadAllLines(path, Encoding.Default); byte[] content_b = File.ReadAllBytes(path); #endregion #region FileStream-以流的形式对文件系统上的文件进行读取、写入、打开和关闭操作,既支持同步读写操作,也支持异步读写操作 //写文件 using (FileStream fileStream = new FileStream(path, FileMode.Create)) { byte[] data = Encoding.Default.GetBytes(content); fileStream.Write(data, 0, data.Length);//将内容写入缓冲区 //Flush()将缓冲区内容写入文件系统,后续无操作的话,在关闭或出using时会自动写入文件系统 //fileStream.Flush(); //使用using就不必显示的关闭流,它会自动关闭并释放 //fileStream.Close(); } //追加内容 using (FileStream fileStream = new FileStream(path, FileMode.Append)) { byte[] data = Encoding.Default.GetBytes(content); fileStream.Write(data, 0, data.Length); } //读文件 using (FileStream fileStream = new FileStream(path, FileMode.Open)) { byte[] data = new byte[fileStream.Length]; fileStream.Read(data, 0, data.Length); string result = Encoding.Default.GetString(data); //do something... } #endregion #region StreamWriter&StreamReader-StreamReader实现了抽象基类TextReader类,而StreamWriter实现了抽象基类TextWriter,分别用于对流的读取与写入 //写文件 using (StreamWriter streamWriter = new StreamWriter(path)) { //方法一 streamWriter.Write(content); streamWriter.Flush();//将缓冲区内容写入磁盘 //使用using就不必显示的关闭流,它会自动关闭并释放 //streamWriter.Close(); //方法二 streamWriter.WriteLine(content.ToCharArray());//按行写入 //streamWriter.Flush(); } //追加内容 using (StreamWriter streamWriter = new StreamWriter(path, true)) { //方法一 streamWriter.Write(content); streamWriter.Flush(); //方法二 streamWriter.WriteLine(content.ToCharArray());//按行追加 } //读文件(StreamReader类似指针位移的操作,所以实例化多个对象) using (StreamReader streamReader_ToLine = new StreamReader(path)) using (StreamReader streamReader_ToEnd = new StreamReader(path)) using (StreamReader streamReader_To = new StreamReader(path)) { string msg = String.Empty; //方法一 while (!streamReader_ToLine.EndOfStream) { msg = streamReader_ToLine.ReadLine(); //do something... } //方法二 if (!streamReader_ToEnd.EndOfStream) { msg = streamReader_ToEnd.ReadToEnd(); //do something... } //方法三 char[] data = new char[streamReader_To.BaseStream.Length]; streamReader_To.Read(data, 0, data.Length); string result = new String(data); //do something... } #endregion
时间: 2024-10-23 14:22:06