C# 如果只想显示结果，请列出。问题中代码的结果显示起来非常无用，因为它只是一个相同字符串的列表。这篇文章很好，解释了关于我的问题的一些核心想法，谢谢。 IEnumerable<FlightResults> fResults = getResults

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如果只想显示结果，请列出。问题中代码的结果显示起来非常无用，因为它只是一个相同字符串的列表。这篇文章很好，解释了关于我的问题的一些核心想法，谢谢。

IEnumerable<FlightResults> fResults = getResultsFromProvider();

//Set all non-stop flights description
fResults.Where(flight => flight.NonStop)
        .Select(flight => flight.Description = "Fly Direct!");

foreach (var flight in fResults.Where(f => f.NonStop))
{
  flight.Description = "Fly Direct!";
}

foreach(Flight f in fResults.Where(flight => flight.NonStop))
  f.Description = "Fly Direct!";

fResults.Where(flight => flight.NonStop)
        .ForEach(flight => flight.Description = "Fly Direct!");

public static class EnumerableExtension
{
  public static void ForEach<T> (this IEnumerable<T> source, Action<T> action)
  {
    if(source == null)
      throw new ArgumentNullException("source");

    foreach(T obj in source)
      action(obj);

  }
}

foreach (var x in fResults.Where(flight => flight.NonStop))
{
  x.Description = "Fly Direct!";
}

var nonStopFlights = fResults.Where(f => f.NonStop);

foreach(var flight in nonStopFlights)
    flight.Description = "Fly Direct!";

var nonStopFlights = fResults.Where(f => f.NonStop).ToList();

// ForEach is a method on List that is acceptable to make modifications inside.
nonStopFlights.ForEach(f => f.Description = "Fly Direct!");

//Set all non-stop flights description
foreach (var flight in fResults.Where(flight => flight.NonStop)) {  
  flight.Description = "Fly Direct!";
}

fResults.Where(flight => flight.NonStop)  

foreach (var x in fResults.Where(flight => flight.NonStop))
{
    x.Description = "Fly Direct!";
}