c# 图片转流 流转文件

//----引入必要的命名空间

using System.IO;

using System.Drawing.Imaging;

//----代码部分----//

private byte[] photo;//公用缓冲区

public string SourFilePath;//源图片文件路径

public string ObjFilePath;//目标图片路径

public int FileToStream()//文件到流的转换

{

    Image img = new Bitmap(SourFilePath);

    MemoryStream stream = new MemoryStream();

    img.Save(stream, ImageFormat.Bmp);

    BinaryReader br = new BinaryReader(stream);

    photo = stream.ToArray();

    stream.Close();

    return 0;

}

public Image ShowPic()//根据流显图

{

    byte[] bytes = photo;

    MemoryStream ms = new MemoryStream(bytes);

    ms.Position = 0;

    Image img = Image.FromStream(ms);

    ms.Close();

    return img;

}

public int StreamToFile()//反向转换

{

    byte[] bytes = photo;

    FileStream fs = new FileStream(ObjFilePath, FileMode.Create, FileAccess.Write);

    fs.Write(bytes, 0, bytes.Length);

    fs.Flush();

    fs.Close();

    return 0;

}