protected void convertPhoto(DbPhoto p, PhotoDesc pp)
{
pp.Id = p.Id;
pp.Name = p.Name;
pp.DataBytes = p.DataBytes;
pp.IsModified = false;
}
public Tuple<PhotoDesc, Exception> MaintainsPhoto(PhotoDesc oPhoto)
{
if (oPhoto == null)
{
return new Tuple<PhotoDesc, Exception>(null, new ArgumentNullException());
}
if (!oPhoto.IsWriteable)
{
return new Tuple<PhotoDesc, Exception>(null, new ArgumentException());
}
PhotoDesc pRet = null;
Exception err = null;
try
{
using (var ctx = getContext())
{
DbPhoto p = findPhoto(ctx, oPhoto);
if (p != null)
{
p.Name = oPhoto.Name;
p.DataBytes = oPhoto.DataBytes;
ctx.SaveChanges();
}
else
{
p = new DbPhoto();
p.Id = nextId(ctx, TAB_PHOTO);
p.Name = oPhoto.Name;
p.DataBytes = oPhoto.DataBytes;
ctx.DbPhotoes.Add(p);
ctx.SaveChanges();
}
pRet = new PhotoDesc();
convertPhoto(p, pRet);
}// ctd
}
catch (Exception ex)
{
err = ex;
}
return new Tuple<PhotoDesc, Exception>(pRet, err);
}