不能在谓词</string>中使用IEnumerable <string>

Question

我有以下代码......

examinerSpec.Predicate = examinerSpec.AndExpression(examinerSpec.Predicate,
     centreTemp =>centreTemp.ExaminerCentreAssociations.Any(
     examinerTemp =>examinerTemp.CentreRegionMaps.CentreNumber.
     Contains(**currentCentreNumber**) &&
     examinerTemp.CentreRegionMaps.Active == true &&
     examinerTemp.DateStart <= DateTime.Now &&
     (!examinerTemp.DateEnd.HasValue ||
     examinerTemp.DateEnd.Value >= DateTime.Now)));

Contains中的CurrentCentreNumber（currentCentreNumber）是一个字符串。我想使用IEnumerable的centreNumbers。我试过以下......

examinerSpec.Predicate = examinerSpec.AndExpression(examinerSpec.Predicate,
   centreTemp =>
   centreTemp.ExaminerCentreAssociations.Any(
   examinerTemp =>
   examinerTemp.CentreRegionMaps.CentreNumber.
   Any(currentCentreNumber) &&
   examinerTemp.CentreRegionMaps.Active == true &&
   examinerTemp.DateStart <= DateTime.Now &&
   (!examinerTemp.DateEnd.HasValue ||
   examinerTemp.DateEnd.Value >= DateTime.Now)));

不起作用。编译器告诉我“无法推断出该方法的类型参数”。

我真的需要在IEnumerable参数上过滤examinerTemp.CentreRegionMaps.CentreNumber。

非常感谢您的任何帮助。

Answer 1

这会有用吗？很难推断你的类型......

examinerSpec.Predicate = examinerSpec.AndExpression
    (examinerSpec.Predicate,
        centreTemp =>
            centreTemp.ExaminerCentreAssociations.Any(examinerTemp =>
                examinerTemp.CentreRegionMaps.CentreNumber.Any(cn => cn == currentCentreNumber) &&
                examinerTemp.CentreRegionMaps.Active == true &&
                examinerTemp.DateStart <= DateTime.Now &&
                (!examinerTemp.DateEnd.HasValue || examinerTemp.DateEnd.Value >= DateTime.Now)
            )
    );