public T GetItem(Array predicate)
{
IQueryable <T> QueryList = null;
QueryList = ObjectList.AsQueryable <T>().Where((Expression <Func <T, bool> >)predicate.GetValue(0));
for (int i = 1; i < predicate.GetLength(0); i++)
{
QueryList = QueryList.Where((Expression <Func <T, bool> >)predicate.GetValue(i));
}
if (QueryList.FirstOrDefault() == null)
{
throw new InvalidOperationException(this.GetType().GetGenericArguments().First().Name + " not found.");
}
return(QueryList.FirstOrDefault());
}
