Serializing XML Document through application domains - xml-serialization

Question

I'm trying to serialize an XML file between two software components, with a client-server fashioned code.
First of all, i'll show how i solved the same issue for Bitmaps (code has been simplified for writting this):
Initially, this code serializes me Bitmaps at the server side:
public String ImageToString(Bitmap img)
{
byte[] byteArray = new byte[0];
using (MemoryStream stream = new MemoryStream())
{
img.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
stream.Close();
byteArray = stream.ToArray();
}
return Convert.ToBase64String(byteArray);
}
And this deserializes the Bitmap at the client side:
public Bitmap StringToImage(string imageString)
{
byte[] array = Convert.FromBase64String(imageString);
Bitmap image = (Bitmap)Bitmap.FromStream(new MemoryStream(array));
return image;
}
What i really want to do now is do the same, but with XML files. I have at the server side:
public XmlDocument RemoteXMLfile()
{
XmlDocument doc = new XmlDocument();
doc.Load("myXMLFile.xml");
return doc;
}
But this makes the compiler to complain because it finds the XML document unmarked as serializable.
My question is: how do i solve this? Thanks!

Answer 1

I answer my own question:
The XMLDocuments is loaded and converted to a byte array at the server side:
public byte[] RemoteXMLfile()
{
XmlDocument doc = new XmlDocument();
doc.Load("myLocalXMLfile.xml");
byte[] byteArray = new byte[0];
using (MemoryStream stream = new MemoryStream())
{
doc.Save(stream);
stream.Close();
byteArray = stream.ToArray();
}
return byteArray;
}
And at the client side, we convert again to an XML document from its byte array shape:
byte[] docbytearray = RemoteXMLfile();
XmlDocument doc = new XmlDocument();
MemoryStream ms = new MemoryStream(docbytearray);
doc.Load(ms);