Image imgPhoto;
using (var bmpTemp = new Bitmap(imageFilePath))
{
    imgPhoto = new Bitmap(bmpTemp);
}

try
{
    imgPhoto.Save(imageFilePath);
}
catch 
{
    //
}

using (var stream = new FileStream(imageFilePath, FileMode.Open, FileAccess.Read))
    imgPhoto = Image.FromStream(stream);
try
{
    imgPhoto.Save(imageFilePath);
}
catch
{
    //
}

byte[] bytes;
using (var bmpTemp = new Bitmap(imageFilePath))
{
    imgPhoto = new Bitmap(bmpTemp);
    bytes = ImageToByteArray(imgPhoto);
    imgPhoto.Dispose();
}
try
{
    File.WriteAllBytes(imageFilePath, bytes);
}
catch
{
    //
}

public static byte[] ImageToByteArray(Bitmap imageIn)
{
    var ms = new MemoryStream();
    imageIn.Save(ms, ImageFormat.Png);
    return ms.ToArray();
}