如何從Linq方法傳遞參數到自定義函數？

Question

如何將filterSettnig參數傳遞給Linq ConvertAll方法中的CalculateEndDateTime方法？

public static List<IAppointment> ConvertToIAppointment(
           List<Misa.Runtime.Entities.Agenda> appointments, 
           AgFilterDisplay filterSettnig) 
{ 
    List<Misa.Agenda.IAppointment> result = null; 
    if (appointments != null) 
     result = appointments.ConvertAll<IAppointment>(CalculateEndDateTime(/*here i want to pass filterSettnig parameter*/)); 
    return result; 
} 

private static IAppointment CalculateEndDateTime(Entities.Agenda agenda, 
               AgFilterDisplay filterSettnig) 
{ 
    IAppointment result = null; 

    if (agenda.ClusterID > 0) 
    { 
     if (agenda.StartDateTime.Date != agenda.EndDateTime.Date) 
     { 
      agenda.EndDateTime = agenda.StartDateTime.Date.Add(new TimeSpan(23, 59, 59)); 
     } 
    } 

    result = (IAppointment)agenda; 

    return result; 
} 

Answer 1

改爲使用Select，它是LINQ的一部分。 ConvertAll是一個List<T>方法，而不是LINQ方法。

result = appointments.Select(a => CalculateEndDateTime(a, filterSetting)) 
        .ToList();