I would like to extend the expression parameter in my method to add my own filters. I am trying to do something like below, but the syntax is wrong:
public static IList<MyPage> DoSomething<T>(Expression<Func<T, bool>> predicate)
{
return DataStore().GetPages().Where(p => p.PublishDate < DateTime.Now && predicate)
}
The compiler is complaining is complaining in Visual Studio 2012 with this error:
Error 29 Operator '&&' cannot be applied to operands of type '
bool
' and 'System.Linq.Expressions.Expression<System.Func<T,bool>>
'
Would extending the predicate first be better then feed if back as .Where(predicate)
? How would you do that?
Would extending the predicate first be better then feed if back as .Where(predicate)? How would you do that?
Yes, and exactly like that, if I understand what you are suggesting correctly. You can chain .Where()
like this:
public static IList<MyPage> DoSomething<T>(Expression<Func<T, bool>> predicate)
{
return DataStore().GetPages().Where(p => p.PublishDate < DateTime.Now).Where(predicate);
}