public void RemoveNanny(int nannyId)
{
// Searching for the nanny instance in the nanny's XML file (returns null if not found)
XElement nannyToRemove = (from n in DataSourceXml.Nannies.Elements()
where int.Parse(n.Element("Id").Value) == nannyId
select n).FirstOrDefault();
if (nannyToRemove == null)
{
throw new Exception("ERROR: The nanny with id: " + nannyId + " not exist in the database !!!");
}
else
{
nannyToRemove.Remove();
DataSourceXml.SaveInNannies();
}
}
public void AddNanny(Nanny nanny)
{
// Searching for the nanny ID in the nanny's XML file (returns 0 if not found)
int temp = (from n in DataSourceXml.Nannies.Elements()
where int.Parse(n.Element("Id").Value) == nanny.Id
select int.Parse(n.Element("Id").Value)).FirstOrDefault();
if (temp != 0)
{
throw new Exception("ERROR: The nanny with id: " + nanny.Id + " already exist in the database !!!");
}
else
{
DataSourceXml.Nannies.Add(nanny.toXML());
DataSourceXml.SaveInNannies();
}
}