Stream 和 byte[] 之間的轉換及檔案存取的代碼

/* - - - - - - - - - - - - - - - - - - - - - - - -<br /> * Stream 和 byte[] 之間的轉換<br /> * - - - - - - - - - - - - - - - - - - - - - - - */<br />/// <summary><br />/// 將 Stream 轉成 byte[]<br />/// </summary><br />public byte[] StreamToBytes(Stream stream)<br />{<br /> byte[] bytes = new byte[stream.Length];<br /> stream.Read(bytes, 0, bytes.Length);</p><p> // 設定當前流的位置為流的開始<br /> stream.Seek(0, SeekOrigin.Begin);<br /> return bytes;<br />}</p><p>/// <summary><br />/// 將 byte[] 轉成 Stream<br />/// </summary><br />public Stream BytesToStream(byte[] bytes)<br />{<br /> Stream stream = new MemoryStream(bytes);<br /> return stream;<br />}</p><p>/* - - - - - - - - - - - - - - - - - - - - - - - -<br /> * Stream 和 檔案之間的轉換<br /> * - - - - - - - - - - - - - - - - - - - - - - - */<br />/// <summary><br />/// 將 Stream 寫入檔案<br />/// </summary><br />public void StreamToFile(Stream stream,string fileName)<br />{<br /> // 把 Stream 轉換成 byte[]<br /> byte[] bytes = new byte[stream.Length];<br /> stream.Read(bytes, 0, bytes.Length);<br /> // 設定當前流的位置為流的開始<br /> stream.Seek(0, SeekOrigin.Begin);</p><p> // 把 byte[] 寫入檔案<br /> FileStream fs = new FileStream(fileName, FileMode.Create);<br /> BinaryWriter bw = new BinaryWriter(fs);<br /> bw.Write(bytes);<br /> bw.Close();<br /> fs.Close();<br />}</p><p>/// <summary><br />/// 從檔案讀取 Stream<br />/// </summary><br />public Stream FileToStream(string fileName)<br />{<br /> // 開啟檔案<br /> FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read);<br /> // 讀取檔案的 byte[]<br /> byte[] bytes = new byte[fileStream.Length];<br /> fileStream.Read(bytes, 0, bytes.Length);<br /> fileStream.Close();<br /> // 把 byte[] 轉換成 Stream<br /> Stream stream = new MemoryStream(bytes);<br /> return stream;<br />}