C＃控制台应用程序-查询IEnumerable和重新格式化日期

Question

我有一个IEnumerable查询来获取一些数据-该查询中包含EndDate字段。但是，我想更改“结束日期”的格式。有没有一种方法可以在查询中执行此操作，还是需要先查询然后更改日期？下面的示例代码。

当前，sc.EndDate的格式为“ mm / dd / yyyy”（例如05/28/2019），但我需要将该字段设置为“ dd-MMM-yyyy”（例如28-May- 2019）。

任何想法或想法？

编辑：我的班级“分数”将所有内容都以STRING的形式显示，因为我是从代码前面的CSV文件中获取的。以下课程：

        public class Score
    {
        [CsvColumn(Name = "Name", FieldIndex = 1)]
        public string Name { get; set; }

        [CsvColumn(Name = "StudentId", FieldIndex = 2)]
        public string StudentId { get; set; }

        [CsvColumn(Name = "Email", FieldIndex = 3)]
        public string Email { get; set; }

        [CsvColumn(Name = "LastLogin", FieldIndex = 4)]
        public string LastLogin { get; set; }

        [CsvColumn(Name = "PlacementAssessmentNumber", FieldIndex = 5)]
        public string PlacementAssessmentNumber { get; set; }

        [CsvColumn(Name = "TotalNumberofPlacements Taken", FieldIndex = 6)]
        public string TotalNumPlacements { get; set; }

        [CsvColumn(Name = "StartDate", FieldIndex = 7)]
        public string StartDate { get; set; }

        [CsvColumn(Name = "StartTime", FieldIndex = 8)]
        public string StartTime { get; set; }

        [CsvColumn(Name = "EndDate", FieldIndex = 9)]
        public string EndDate { get; set; }

        [CsvColumn(Name = "EndTime", FieldIndex = 10)]
        public string EndTime { get; set; }

        [CsvColumn(Name = "ProctoredAssessment", FieldIndex = 11)]
        public string ProctoredAssessment { get; set; }

        [CsvColumn(Name = "TimeinPlacement", FieldIndex = 12)]
        public string TimeInPlacement { get; set; }

        [CsvColumn(Name = "PlacementResults", FieldIndex = 13)]
        public string PlacementResults { get; set; }

        IEnumerable<Score> scores = cc.Read<Score>(resultsPath, inputFileDescription);

        string whereSort = "Yes/Complete";

        var scoresById =
            from sc in scores
            orderby sc.Name
            where ((sc.ProctoredAssessment.ToString() == whereSort.ToString()))
            select new { sc.StudentId, sc.PlacementResults, sc.ProctoredAssessment, sc.EndDate };

Answer 1

由于@Sweeper，我找到了解决方案。在我的课堂上，我将String EndDate更改为DateTime EndDate，并将字段ToString（“ dd-MMM-yyyy”）强制转换。猜猜我真的在想这件事！