首先把 Stream 读到 byte 数组中,而后再用 BinaryWriter 写入到二进制文件:
using System.IO;// streamFile 是 Stream 类型byte[] bytes = new byte[streamFile.Length];streamFile.Read(bytes, 0, bytes.Length);streamFile.Seek(0, SeekOrigin.Begin);FileStream fs = new FileStream("D:/a.jpg", FileMode.Create);BinaryWriter bw = new BinaryWriter(fs);bw.Write(bytes);bw.Close();fs.Close();