.net – 将多个数组聚合成一个数组(Linq)

我将多个数组聚合成一个“大数组”时遇到困难,我认为这应该是可能的,但我不能让我的头

考虑一些返回一些dummyObject数组的方法

public class DummyObjectReceiver 
{
  public DummyObject[] GetDummyObjects  { -snip- }
}

现在我有这个地方：

public class Temp
{
  public List<DummyObjectReceiver> { get; set; }

  public DummyObject[] GetAllDummyObjects ()
  {
    //here's where I'm struggling (in linq) - no problem doing it using foreach'es... ;)
  }
}

希望有一点清楚我想要实现的目标
(作为额外的我想要排序这个数组的一个int值DummyObject有… – 但是orderby应该没有问题,我希望;)

您可以使用SelectMany方法将数组中的数组返回到数组中.

public class DummyObject {
    public string Name;
    public int Value;
}

public class DummyObjectReceiver  {

    public DummyObject[] GetDummyObjects()  {
        return new DummyObject[] {
            new DummyObject() { Name = "a",Value = 1 },new DummyObject() { Name = "b",Value = 2 }
        };
    }

}

public class Temp {

    public List<DummyObjectReceiver> Receivers { get; set; }

    public DummyObject[] GetAllDummyObjects() {
        return Receivers.SelectMany(r => r.GetDummyObjects()).OrderBy(d => d.Value).ToArray();
    }

}

例：

Temp temp = new Temp();
temp.Receivers = new List<DummyObjectReceiver>();
temp.Receivers.Add(new DummyObjectReceiver());
temp.Receivers.Add(new DummyObjectReceiver());
temp.Receivers.Add(new DummyObjectReceiver());

DummyObject[] result = temp.GetAllDummyObjects();