本篇主要讲解Stream 和 byte[] 之间的转换
// <summary> /// 将 Stream 转成 byte[] /// </summary> public byte[] StreamToBytes(Stream stream) { byte[] bytes = new byte[stream.Length]; stream.Read(bytes, 0, bytes.Length); // 设置当前流的位置为流的开始 stream.Seek(0, SeekOrigin.Begin); return bytes; }
/// <summary> /// 将 byte[] 转成 Stream /// </summary> public Stream BytesToStream(byte[] bytes) { Stream stream = new MemoryStream(bytes); return stream; }
/// <summary> /// 将 Stream 写入文件 /// </summary> public void StreamToFile(Stream stream,string fileName) { // 把 Stream 转换成 byte[] byte[] bytes = new byte[stream.Length]; stream.Read(bytes, 0, bytes.Length); // 设置当前流的位置为流的开始 stream.Seek(0, SeekOrigin.Begin); // 把 byte[] 写入文件 FileStream fs = new FileStream(fileName, FileMode.Create); BinaryWriter bw = new BinaryWriter(fs); bw.Write(bytes); bw.Close(); fs.Close(); }
/// <summary> /// 从文件读取 Stream /// </summary> public Stream FileToStream(string fileName) { // 打开文件 FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read); // 读取文件的 byte[] byte[] bytes = new byte[fileStream.Length]; fileStream.Read(bytes, 0, bytes.Length); fileStream.Close(); // 把 byte[] 转换成 Stream Stream stream = new MemoryStream(bytes); return stream; }
stream图片以数据流格式的进行存储,转换为byte[]格式存储进数据库中。
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原文地址:http://blog.csdn.net/hr1187362408/article/details/46707137