简单的io操作

DirectoryInfo di = new DirectoryInfo("e:/"); FileInfo[] fis = di.GetFiles("*.jpg"); FileInfo fi = fis[0]; Response.Write("名字" + fi.Name+"<br>"); Response.Write("大小" + fi.Length); Stream stream = fi.OpenRead(); //建立个20K大小的字节数组 byte[] buffer = new byte[20 * 1024]; int index = 0; int length = 0; while ((length =stream.Read(buffer,0,20*1024)) > 0) { Response.Write("已读字节" + length + "<br>"); index++; //拆分后,保存.bat文件 string path = string.Format("e:/{0}.dat", index); //将读取的内容写入文件中 Stream output = new FileStream(path, FileMode.Create); output.Write(buffer, 0, length); output.Close(); } stream.Close(); Response.Write("关闭流!"); }