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//byte[] 转图片
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public static Bitmap BytesToBitmap(byte[] Bytes)
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{
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MemoryStream stream = null;
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try
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{
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stream = new MemoryStream(Bytes);
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return new Bitmap((Image)new Bitmap(stream));
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}
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catch (ArgumentNullException ex)
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{
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throw ex;
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}
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catch (ArgumentException ex)
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{
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throw ex;
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}
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finally
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{
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stream.Close();
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}
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}
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//图片转byte[]
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public static byte[] BitmapToBytes(Bitmap Bitmap)
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{
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MemoryStream ms = null;
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try
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{
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ms = new MemoryStream();
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Bitmap.Save(ms, Bitmap.RawFormat);
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byte[] byteImage = new Byte[ms.Length];
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byteImage = ms.ToArray();
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return byteImage;
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}
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catch (ArgumentNullException ex)
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{
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throw ex;
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}
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finally
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{
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ms.Close();
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}
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}
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}
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=====================
-
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* Stream 和 byte[] 之间的转换
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* - - - - - - - - - - - - - - - - - - - - - - - */
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/// <summary>
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/// 将 Stream 转成 byte[]
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/// </summary>
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public byte[] StreamToBytes(Stream stream)
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{
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byte[] bytes = new byte[stream.Length];
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stream.Read(bytes, 0, bytes.Length);
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// 设置当前流的位置为流的开始
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stream.Seek(0, SeekOrigin.Begin);
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return bytes;
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}
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/// <summary>
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/// 将 byte[] 转成 Stream
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/// </summary>
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public Stream BytesToStream(byte[] bytes)
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{
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Stream stream = new MemoryStream(bytes);
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return stream;
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}
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-
-
/* - - - - - - - - - - - - - - - - - - - - - - - -
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* Stream 和 文件之间的转换
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* - - - - - - - - - - - - - - - - - - - - - - - */
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/// <summary>
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/// 将 Stream 写入文件
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/// </summary>
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public void StreamToFile(Stream stream,string fileName)
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{
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// 把 Stream 转换成 byte[]
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byte[] bytes = new byte[stream.Length];
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stream.Read(bytes, 0, bytes.Length);
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// 设置当前流的位置为流的开始
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stream.Seek(0, SeekOrigin.Begin);
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// 把 byte[] 写入文件
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FileStream fs = new FileStream(fileName, FileMode.Create);
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BinaryWriter bw = new BinaryWriter(fs);
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bw.Write(bytes);
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bw.Close();
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fs.Close();
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}
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/// <summary>
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/// 从文件读取 Stream
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/// </summary>
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public Stream FileToStream(string fileName)
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{
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// 打开文件
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FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read);
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// 读取文件的 byte[]
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byte[] bytes = new byte[fileStream.Length];
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fileStream.Read(bytes, 0, bytes.Length);
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fileStream.Close();
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// 把 byte[] 转换成 Stream
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Stream stream = new MemoryStream(bytes);
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return stream;
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}
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