Example of Ormongo's GridFS wrapper class, Attachment

gistfile1.cs

public class Asset : Document<Asset>
{
	public string Title { get; set; }
	public Attachment File { get; set; }
}

Attachment file = Attachment.Create("Files/Koala.jpg", "image/jpg");

Asset asset = new Asset
{
	Title = "The Title",
	File = file
};
asset.Save();

/*
{
  "_id": {
    "$oid": "4d78ff2002df531d487fdbcc"
  },
  "_t": "Asset",
  "Title": "The Title",
  "File": {
    "$oid": "4d78ff1f02df531d487fdbc6"
  }
}
*/

Asset theAsset = Asset.FindByID(asset.ID);
string fileName = theAsset.File.FileName;