namespace file { class MyFile { string FilePath; byte[] byData = new byte[100]; public char[] MyData = new char[1000]; public string reslutstr = null; public MyFile() { } public MyFile(string path) { FilePath = path; } public void ReadFile1() { try { FileStream file = new FileStream(FilePath, FileMode.Open); file.Seek(0, SeekOrigin.Begin); file.Read(byData, 0, 100); //byData传进来的字节数组,用以接受FileStream对象中的数据,第2个参数是字节数组中开始写入数据的位置,它通常是0,表示从数组的开端文件中向数组写数据,最后一个参数规定从文件读多少字符. Decoder d = Encoding.Default.GetDecoder(); d.GetChars(byData, 0, byData.Length, MyData, 0); //Console.WriteLine(MyData); foreach (char ch in MyData) { reslutstr += ch.ToString(); } file.Close(); } catch (IOException e) { Console.WriteLine(e.ToString()); } } public void ReadFile2( ) { StreamReader sr = new StreamReader(FilePath, Encoding.Default); String line; while ((line = sr.ReadLine()) != null) { reslutstr += line; // Console.WriteLine(line.ToString()); } } public void SaveFile1(string savestr) { FileStream fs = new FileStream(FilePath, FileMode.Create); //获得字节数组 byte[] data = System.Text.Encoding.Default.GetBytes(savestr); //开始写入 fs.Write(data, 0, data.Length); //清空缓冲区、关闭流 fs.Flush(); fs.Close(); } public void SaveFile2() { FileStream fs = new FileStream(FilePath , FileMode.Create); StreamWriter sw = new StreamWriter(fs); //开始写入 sw.Write("Hello World!!!!"); //清空缓冲区 sw.Flush(); //关闭流 sw.Close(); fs.Close(); }
} }
调用方法：
MyFile MyFile = new MyFile(Filepath); string result = null; // MyFile.SaveFile1(savastr); MyFile.SaveFile2(); MyFile.ReadFile2();