C#

System.IO.MemoryStream memStream = new System.IO.MemoryStream();
fImage.Save(memStream,ImageFormat.Png);
byte[] j = new Byte[memStream.Length];
memStream.Read(j,0,(int)memStream.Length);
ctx.Response.ContentType = "image/png";
ctx.Response.BinaryWrite(j);	

System.IO.MemoryStream memStream = new System.IO.MemoryStream();
fImage.Save(memStream,ImageFormat.Png);
ctx.Response.ContentType = "image/png";
ctx.Response.BinaryWrite(memStream.ToArray());	

[DllImport("user32.dll")]
private static extern IntPtr GetWindow(
  IntPtr hWnd,
  [MarshalAs(UnmanagedType.U4)] int nCmd);
private const int GW_HWNDFIRST = 0;
private const int GW_HWNDLAST = 1;
private const int GW_HWNDNEXT = 2;
private const int GW_HWNDPREV = 3;
private const int GW_OWNER = 4;
private const int GW_CHILD = 5;