タプルであるオブジェクトのリストから選択

Question

私はそのように見えるクラスを持っています。 List<MessageEntry> test = new List<MessageEntry> -

class MessageEntry 
{ 
    public Tuple<bool, int> MessageId; 

    public Tuple<bool, DateTime> MessageDate { get; internal set; } 
    public Tuple<bool, String> Subject { get; internal set; } 
    public Tuple<bool, String> EmailFrom { get; internal set; } 
    public Tuple<bool, String> EmailTo { get; internal set; } 
    public Tuple<bool, String> EmailCC { get; internal set; } 
    public Tuple<bool, String> EmailBCC { get; internal set; } 
    public Tuple<bool, String> EmailDateSent { get; internal set; } 
    public Tuple<bool, String> BodyHTML { get; internal set; } 
} 

私はその後、List<MessageEntry>を持っています。

すべての項目を選択するにはどうすればいいですかtestタプルのItem1はtrueです。

Answer 1

var result = test.Where(x => x.MessageDate.Item1 && x.Subject.Item1 && ....); 

Answer 2

質問からどのようにコードを使用するのかよく分かりません。 しかし、私はこのコードが自分の必要性に合わせて変更すれば助けになると思います。

EDIT（私は風のようにLINQで使用するために、拡張メソッドのチェック方法を抽出）：

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Reflection; 

namespace ConsoleApplication1 
{ 
    internal class Program 
    { 
     private static void Main(string[] args) 
     { 
      var test = new List<MessageEntry>(); 

      var result = test 
       .Where(entry => entry.IsAllTuplePropertiesIsTrue()) 
       .Aggregate(
        string.Empty, 
        (s, entry) => s + $"value is {entry.IsAllTuplePropertiesIsTrue()}" 
        ); 

      Console.WriteLine(result); 
      Console.ReadLine(); 
     } 
    } 

    public static class MessageEntryExtension 
    { 
     private const BindingFlags BindingFlags = 
      System.Reflection.BindingFlags.GetProperty 
      | System.Reflection.BindingFlags.Public 
      | System.Reflection.BindingFlags.Instance; 

     /// <summary> 
     /// Method check all <see cref="Tuple" /> properties 
     /// in instance of <see cref="MessageEntry" /> class. 
     /// </summary> 
     /// <param name="messageEntry"></param> 
     /// <returns>If one of several Tuple.Item1 value is not bool false not equal 
     /// false - return false. Any way - true</returns> 
     public static bool IsAllTuplePropertiesIsTrue(this MessageEntry messageEntry) 
     { 
      var props = typeof (MessageEntry).GetProperties(BindingFlags); 

      foreach (var value in props.Select(p => p.GetValue(messageEntry))) 
      { 
       if (value == null) 
        return false; 

       if (typeof (Tuple<,>) == value.GetType()) 
        return false; 

       var item1Type = value.GetType().GetProperty("Item1", BindingFlags); 
       var item1Value = item1Type?.GetValue(value); 

       if (!(item1Value is bool)) 
        return false; 

       if (!(bool) item1Value) 
        return false; 
      } 

      return true; 
     } 
    } 

    public class MessageEntry 
    { 
     public MessageEntry() 
     { 
      MessageId = new Tuple<bool, int>(true, 1); 
      MessageDate = new Tuple<bool, DateTime>(false, DateTime.Now); 
      Subject = new Tuple<bool, string>(true, "Hello, World!"); 
     } 

     // Pay attention, I changed this place, 
     // so as not to duplicate the reflection code. 
     // For properties and field, it is similar, but still disconnects 
     public Tuple<bool, int> MessageId { get; internal set; } 

     public Tuple<bool, DateTime> MessageDate { get; internal set; } 
     public Tuple<bool, string> Subject { get; internal set; } 
     public Tuple<bool, string> EmailFrom { get; internal set; } 
     public Tuple<bool, string> EmailTo { get; internal set; } 
     public Tuple<bool, string> EmailCC { get; internal set; } 
     public Tuple<bool, string> EmailBCC { get; internal set; } 
     public Tuple<bool, string> EmailDateSent { get; internal set; } 
     public Tuple<bool, string> BodyHTML { get; internal set; } 
    } 
}