I have a statement like so:
var vals =
from StandAloneUserPayment saup in _Session.Query<StandAloneUserPayment>()
.Fetch(x => x.RecurringPayments)
where
saup.User.UserId == userId
&& searchString.Contains(saup.FriendlyName, StringComparer.InvariantCultureIgnoreCase)
select
saup;
This seems to be exactly what I'm supposed to do, but I get the whole line with the Contains
method underlined with the following message:
string
does not contain a definition forContains
and the best extension method overloadSystem.Linq.ParallelEnumerable.Contains<TSource>(System.Linq.ParallelQuery<TSource>, TSource, System.Collections.Generic.IEqualityComparer<TSource>)
has some invalid arguments
What am I doing wrong?
Try IndexOf
:
searchString.IndexOf(saup.FriendlyName,
StringComparison.InvariantCultureIgnoreCase) != -1
The reason it doesn't work is because the Contains
extension method that accepts an IEqualityComparer<TSource>
is operating on a String
, which implements IEnumerable<char>
, not IEnumerable<string>
, so a string
and an IEqualityComparer<string>
can't be passed to it.