public void deleteNanny(long nanny) //is XML
{
XElement nannyElement = (from n in XML_Source.Nannys.Elements()
where Convert.ToInt64(n.Element("id").Value) == nanny
select n).FirstOrDefault();
if (nannyElement != null)
{
nannyElement.Remove();
XML_Source.SaveNannys();
}
else
{
throw new Exception("the nanny is not in list\n");
}
}
public void updateNanny(Nanny nanny) //is XML
{
XElement nannyElement = (from n in XML_Source.Nannys.Elements()
where Convert.ToInt32(n.Element("id").Value) == nanny._nannyID
select n).FirstOrDefault();
if (nannyElement != null)
{
nannyElement.Remove();
XML_Source.Nannys.Add(nanny.toXML());
XML_Source.SaveNannys();
}
else
{
throw new Exception("the nanny is not in the system.\n");
}
}
public void addNanny(Nanny thisNanny)//is XML
{
var index = (from n in XML_Source.Nannys.Elements()
where Convert.ToInt64(n.Element("id").Value) == thisNanny._nannyID
select n).FirstOrDefault();
// if FindIndex method returns -1 so thisNany doesn't exist
if (index != null)
{
throw new Exception("ID already exist in the system");
}
else
{
XML_Source.Nannys.Add(thisNanny.toXML());
XML_Source.SaveNannys();
}
}