C#在LINQ语句中获取最后一个元素 [英] c# getting last element in LINQ statement

问题描述

    var filePaths = Directory.GetFiles(@"\\Pontos\completed\", "*_*.csv").Select(p => new { Path = p, Date = System.IO.File.GetLastWriteTime(p) })
        .OrderBy(x => x.Date)
        .Where(x => x.Date >= LastCreatedDate);

我想知道最近的x.Date

如何从此linq语句中获取最新日期?

from this linq statement how can i get the most recent date?

请注意，我不需要filepath而是我需要DATE

please note that i do not need the filepath rather i need the DATE

推荐答案

var mostRecent = Directory.GetFiles(@"\\Pontos\completed\", "*_*.csv")
    .Select(p => new { Path = p, Date = System.IO.File.GetLastWriteTime(p) }) 
    .OrderBy(x => x.Date) 
    .Where(x => x.Date >= LastCreatedDate)
    .LastOrDefault(); 

或

var mostRecent = Directory.GetFiles(@"\\Pontos\completed\", "*_*.csv")
    .Select(p => new { Path = p, Date = System.IO.File.GetLastWriteTime(p) }) 
    .OrderByDescending(x => x.Date) 
    .Where(x => x.Date >= LastCreatedDate)
    .FirstOrDefault(); 

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