Question

我有一个List＆lt; PaperAbstract＆gt;类。 PaperAbstract类有一组作者。其中一位作者有一个标志IsSubmitting为true。我如何订购我的清单＆lt; PaperAbstract＆gt;由提交作者LastName？

public class PaperAbstract
{
    public string Title { get; set; }
    public List<Author> Authors { get; set; }
}

public class Author
{
    public bool IsSubmitting { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
}

例如：

var paperAbstracts = new List<PaperAbstract>();
paperAbstracts.Add(new PaperAbstract
{
    Title = "Abstract 2",
    Authors = new List<Author>
    {
        new Author { IsSubmitting = false, FirstName = "F5", LastName = "L5"},
        new Author { IsSubmitting = true, FirstName = "F6", LastName = "L6"}
    }
});
paperAbstracts.Add(new PaperAbstract
{
    Title = "Abstract 3",
    Authors = new List<Author>
    {
        new Author { IsSubmitting = true, FirstName = "F1", LastName = "L1"},
        new Author { IsSubmitting = false, FirstName = "F2", LastName = "L2"}
    }
});
paperAbstracts.Add(new PaperAbstract
{
    Title = "Abstract 1",
    Authors = new List<Author>
    {
        new Author { IsSubmitting = false, FirstName = "F3", LastName = "L3"},
        new Author { IsSubmitting = true, FirstName = "F4", LastName = "L4"}
    }
});

正确的论文顺序摘要应该是摘要3，摘要1，摘要2。

Answer 1

您可以使用LINQ中的OrderBy：

 var result = input.OrderBy(x => x.Authors
                                  .First(a => a.IsSubmitting).LastName)

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