Bytes

Public Function ConvertImageFiletoBytes(ByVal ImageFilePath As String) As Byte()
            Dim _tempByte() As Byte = Nothing
            If String.IsNullOrEmpty(ImageFilePath) = True Then
                Throw New ArgumentNullException("Image File Name Cannot be Null or Empty", "ImageFilePath")
                Return Nothing
            End If
            Try
                Dim _fileInfo As New IO.FileInfo(ImageFilePath)
                Dim _NumBytes As Long = _fileInfo.Length
                Dim _FStream As New IO.FileStream(ImageFilePath, IO.FileMode.Open, IO.FileAccess.Read)
                Dim _BinaryReader As New IO.BinaryReader(_FStream)
                _tempByte = _BinaryReader.ReadBytes(Convert.ToInt32(_NumBytes))
                _fileInfo = Nothing
                _NumBytes = 0
                _FStream.Close()
                _FStream.Dispose()
                _BinaryReader.Close()
                Return _tempByte
            Catch ex As Exception
                Return Nothing
            End Try
        End Function
http://www.codeprojec*****m/Articles/31921/Convert-Image-File-to-Bytes-and-Back