在 sql asp.net mvc 5 中使用 linq 时如何格式化记录中的数据？

Question

我有一个电子表格并且有数据，但问题是我的数据是错误的，但它没有按照要求格式化，需要一些帮助。这是我对这个应用程序的逻辑。 sql 查询是针对 1 个数据库上 3 个不同表的数据库中我的记录列表，控制器和模型用于我的逻辑以根据我的要求生成以下图像。

// SQL query


  SELECT TOP (1000) [WeekId]
          ,[WeekNum]
          ,[Year]
          ,[CreatedDate]
          ,[CreatedBy]
          ,[ModifiedDate]
          ,[ModifiedBy]
          ,[InActive]
      FROM [ProductionManagement].[Schedule].[Week]
    SELECT TOP (1000) [ProductionDayId]
          ,[WeekId]
          ,[ProductionDate]
          ,[DayOfWeek]
          ,[CreatedDate]
          ,[CreatedBy]
          ,[ModifiedDate]
          ,[ModifiedBy]
          ,[InActive]
      FROM [ProductionManagement].[Schedule].[ProductionDay]
    SELECT TOP (1000) [ModelId]
          ,[Name]
          ,[Code]
          ,[CreatedDate]
          ,[CreatedBy]
          ,[ModifiedDate]
          ,[ModifiedBy]
          ,[InActive]
      FROM [ProductionManagement].[Schedule].[Model]
    
    // controller
           public IList<ExtractionViewModel> GetExtractionViewModels()
            {
                 var db = new ProductionManagementEntities();
    
                var scheduleList = (from p in db.ProductionDays
                                    from m in db.Models
                                    join w in db.Weeks on p.WeekId equals w.WeekId
                                    orderby w.Year ascending
                                    orderby m.Name descending
                                    where(m.InActive == true)
                           
    
                                    select new ExtractionViewModel
                                    {
    
                                        Year = w.Year,
                                        Week = w.WeekNum,
                                        Day = p.ProductionDate,
                                        VW250 = m.Name,
                                        VW270 = m.Name,
                                        VW2502PA = m.Name,
                                        VW270PA = m.Name
    
    
                                    }).ToList();
             
                
    
               
                return scheduleList;
            }
      public class ExtractionViewModel
        {
            public string Year { get; set; }
    
            public int Week { get; set; }
    
            
            [DataType(DataType.Date)]
            [DisplayFormat(DataFormatString = "{0;yyyy-MM-dd}", ApplyFormatInEditMode =false)]
            public DateTime Day { get; set; }
    
            public string VW250 { get; set; }
    
            public string VW270 { get; set; }
    
            public string VW2502PA { get; set; }
    
            public string VW270PA { get; set; }
        }

Answer 1

尝试以下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;


namespace ConsoleApplication
{
    public class Program
    {
        
        public static void Main(string[] args)
        {

            var db = new ProductionManagementEntities();
    
            var scheduleList = (from p in db.ProductionDays.OrderBy(x => x.CreatedDate)
                                join w in db.Weeks on p.WeekId equals w.WeekId
                                join m in db.Models.Where(x =>x.InActive == false) on p.CreatedDate equals m.CreatedDate
                                select new { p = p, w = w, m = m}
                                ).GroupBy(x => x.p.CreatedDate)
                                .Select(x => new ExtractionViewModel() {
                                        Year = x.Key.Year,
                                        Week = x.FirstOrDefault().w.WeekId,
                                        Day = x.FirstOrDefault().p.ProductionDate,
                                        VW250 = x.Where(y => y.m.Name == "VM250").Count(),
                                        VW270 = x.Where(y => y.m.Name == "VM270").Count(),
                                        VW2502PA = x.Where(y => y.m.Name == "VM2502PA").Count(),
                                        VW270PA = x.Where(y => y.m.Name == "VM270PA").Count()    
                                 }).ToList();
            }
    }
    public class ProductionManagementEntities
    {
        public List<Week> Weeks { get;set;}
        public List<ProductionDay> ProductionDays { get;set;}
        public List<Model> Models { get;set;}
    }

    public class Week
    {
        public int WeekId { get;set;}
        public DateTime CreatedDate { get;set;}
        public string CreatedBy { get;set;}
        public DateTime ModifiedDate { get;set;}
        public string ModifiedBy { get;set;}
        public Boolean InActive { get;set;}
    }
    public class ProductionDay
    {
        public int WeekId { get;set;}
        public DateTime ProductionDate { get;set;}
        public DayOfWeek DayOfWeek { get;set;}
        public DateTime CreatedDate { get;set;}
        public string CreatedBy { get;set;}
        public DateTime ModifiedDate { get;set;}
        public string ModifiedBy { get;set;}
        public Boolean InActive { get;set;}
    }
    public class Model
    {
        public string Name { get; set; }
        public int Code { get; set; }
        public DateTime CreatedDate { get; set; }
        public string CreatedBy { get; set; }
        public DateTime ModifiedDate { get; set; }
        public string ModifiedBy { get; set; }
        public Boolean InActive { get; set; }
    }
    

    public class ExtractionViewModel
    {
        public int Year { get; set; }
        public int Week { get; set; }
        public DateTime Day { get; set; }
        public int VW250 { get; set; }
        public int VW270 { get; set; }
        public int VW2502PA { get; set; }
        public int VW270PA { get; set; }
    }
}