public bool DeleteLense(string lense)
{
var item = Lenses.Find(l => (l.Name == lense));
if (item != null)
{
Lenses.Remove(item);
return(true);
}
return(false);
}
public bool AddLense(Lense newLense)
{
var lense = Lenses.Find(l => (l.Factor == newLense.Factor));
if (lense == null)
{
//create a new lense
Lenses.Add(newLense);
return(true);
}
else
{
return(false);
}
}
public Lense GetLense(string lense)
{
return(Lenses.Find(l => (l.ToString() == lense)));
}