C#中二进制和流之间的各种相互转换

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MemoryStream ms = new MemoryStream(bytes);

ms.Position = 0;

Image img = Image.FromStream(ms);

ms.Close();

this.pictureBox1.Image

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System.Text.UnicodeEncoding converter = new System.Text.UnicodeEncoding();

　　byte[] inputBytes =converter.GetBytes(inputString);

　　string inputString = converter.GetString(inputBytes);

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string inputString = System.Convert.ToBase64String(inputBytes);

　　byte[] inputBytes = System.Convert.FromBase64String(inputString);

FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read);

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/// 将 Stream 转成 byte[]

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;

}

/// 将 byte[] 转成 Stream

public Stream BytesToStream(byte[] bytes)

{

    Stream stream = new MemoryStream(bytes);

    return stream;

}

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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();

}

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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;

}

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//Bitmap 转化为 Byte[]

                Bitmap BitReturn = new Bitmap();

                byte[] bReturn = null;

                MemoryStream ms = new MemoryStream();

                BitReturn.Save(ms, System.Drawing.Imaging.ImageFormat.Png);

                bReturn = ms.GetBuffer();