C# Bitmap图像通过内存保存为raw图像

C#  Bitmap图像通过内存保存为raw图像

System.Drawing.Bitmap bitBufferRGB = new System.Drawing.Bitmap("Bitmap.jpg");
System.Drawing.Imaging.BitmapData data = bitBufferRGB.LockBits(
new System.Drawing.Rectangle(System.Drawing.Point.Empty, bitBufferRGB.Size),
System.Drawing.Imaging.ImageLockMode.ReadWrite, bitBufferRGB.PixelFormat);

//获取内存
IntPtr pData = data.Scan0;
int width = bitBufferRGB.Width;
int height = bitBufferRGB.Height;
if (bitBufferRGB.PixelFormat == PixelFormat.Format8bppIndexed)
{
	byte[] laterData = new byte[width * height]; 
	System.Runtime.InteropServices.Marshal.Copy(pData, laterData, 0, width * height); 
	File.WriteAllBytes("D:\\DICOM\\" + string.Format("{0:yyyyMMddHHmmssfff}", DateTime.Now) + "image.raw", laterData);
}
else if (bitBufferRGB.PixelFormat == PixelFormat.Format24bppRgb)
{
	byte[] laterData = new byte[width * height * 3]; // 注意这里，我们按照每个像素3字节来计算数组的大小  
	System.Runtime.InteropServices.Marshal.Copy(pData, laterData, 0, width * height * 3); // 注意这里，我们按照每个像素3字节来复制数据 
	File.WriteAllBytes("D:\\DICOM\\" + string.Format("{0:yyyyMMddHHmmssfff}", DateTime.Now) + "image.raw", laterData);
}


//解锁及释放资源
bitBufferRGB.UnlockBits(data);
bitBufferRGB.Dispose();