public void AddChild(Child child)
{
// Searching for the child ID in the children XML file (returns 0 if not found)
int temp = (from n in DataSourceXml.Children.Elements()
where int.Parse(n.Element("Id").Value) == child.Id
select int.Parse(n.Element("Id").Value)).FirstOrDefault();
if (temp != 0)
{
throw new Exception("ERROR: The child with id: " + child.Id + " already exist in the database !!!");
}
else
{
DataSourceXml.Children.Add(child.toXML());
DataSourceXml.SaveInChildren();
}
}
public void RemoveChild(int childId)
{
// Searching for the child instance in the children XML file (returns null if not found)
XElement childToRemove = (from n in DataSourceXml.Children.Elements()
where int.Parse(n.Element("Id").Value) == childId
select n).FirstOrDefault();
if (childToRemove == null)
{
throw new Exception("ERROR: The child with id: " + childId + " not exist in the database !!!");
}
else
{
childToRemove.Remove();
DataSourceXml.SaveInChildren();
}
}
