怎么把Image 数据转成数据流。

[ke58273536]

Image img = new Bitmap(Screen.AllScreens[0].Bounds.Width, Screen.AllScreens[0].Bounds.Height);
Graphics g = Graphics.FromImage(img);
g.CopyFromScreen(new Point(0, 0), new Point(0, 0), Screen.AllScreens[0].Bounds.Size);
img.Save(@"c:\Captured.jpg", ImageFormat.Jpeg)

我这样可以保存一张图片。。。在转成流可以。。
可是我现在不想保存图片。直接转成二进制流来传送。。要怎么写

[flyrain521]

byte[] bitarr = FileUtil.ReadFile(路径);

[jinjazz]

System.IO.MemoryStream ms = new System.IO.MemoryStream();
            System.Drawing.Image img;
            //load img...
            img.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);

[zgke]

Image img = new Bitmap(Screen.AllScreens[0].Bounds.Width, Screen.AllScreens[0].Bounds.Height);
Graphics g = Graphics.FromImage(img);
g.CopyFromScreen(new Point(0, 0), new Point(0, 0), Screen.AllScreens[0].Bounds.Size);
img.Save(@"c:\Captured.jpg", ImageFormat.Jpeg)

System.IO.MemoryStream _ImageMemory =new System.IO.MemoryStream();
img.Save(_ImageMemory,ImageFormat.Jpeg);
byte[] Temp=_ImageMemory.GetBuffer();
_ImageMemory.Dispose();

[ke58273536]

好像不可以哦。。我截的图片好像会被第一张图片图覆盖了。。。我点两下pictureBox1 里显示的就有两次载图 第一次显示大张的。。
第二次。显示小张的。。
班我看看

private void button2_Click(object sender, EventArgs e)
{
Image img = new Bitmap(Screen.AllScreens[0].Bounds.Width, Screen.AllScreens[0].Bounds.Height);
Graphics g = Graphics.FromImage(img);
g.CopyFromScreen(new Point(0, 0), new Point(0, 0), Screen.AllScreens[0].Bounds.Size);
MemoryStream ms = new MemoryStream();
img.Save(ms,ImageFormat.Jpeg);//保存在内存中
pictureBox1.Image = Image.FromStream(ms);//用来测试有没有内存流存在
}