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Question

我想在下面的此图像中以一个月的整个天数生成视图。

这是我的模型：

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;

#nullable disable

namespace abcs.Models
{
    public partial class PunchIn
    {
        public uint Pid { get; set; }
        public int? Year { get; set; }
        public int? Month { get; set; }
        [Range(1,31,ErrorMessage ="days range is from 1 to 31")]
        public int? Day { get; set; }
        [Display(Name = "punch in time")]
        [DataType(DataType.Time)]
        public DateTime? PunchIn1 { get; set; }
        [Display(Name = "puch out time")]
        [DataType(DataType.Time)]
        public DateTime? PunchOut { get; set; }
        [Display(Name = "remark")]
        public string Remark2 { get; set; }
    }
}

这是我的控制器

 public IActionResult Create()
        {
          return View();
        }
    
     [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> Create([Bind("Pid,Year,Month,Day,PunchIn1,PunchOut,Remark2")] PunchIn punchIn)
        {
            ViewBag.Year = punchIn.Year;


            if (ModelState.IsValid)
            {
                _context.Add(punchIn);
                await _context.SaveChangesAsync();
                return RedirectToAction(nameof(Index));
            }
            return View(punchIn);
        }

，这是我的观点：

@model abcs.Models.PunchIn

@{
    ViewData["Title"] = "Create";
}
<style>
    tr {
        background-color: yellowgreen;
        color: white;
    }

    table, th, td {
        border: 2px solid black;
    }
</style>

<form asp-action="Create">
    
    <table class="table">
        <thead>
            <tr>
                <th>
                    date
                </th>
                <th>
                    Punch in time
                </th>
                <th>
                    Puncn out time
                </th>
                <th>
                    remark
                </th>

            </tr>
        </thead>
        <tbody>
            @{
                int year = 2022;
                for (int month = 1; month <= 1; month++)
                {
                        <h2 align="center">@year @month Month</h2>
                    int daysInMonth = DateTime.DaysInMonth(year, month);
                    for (int day = 1; day <= daysInMonth; day++)
                    {
                        DateTime weekday = new DateTime(year, month, day);

                        <tr>                           
                            <td>
                                <div class="form-group">
                                    @day
                                    <span asp-validation-for="Day" value="@day" class="text-danger"></span>
                                </div>
                            </td>
                            <td>
                                <div asp-validation-summary="ModelOnly" class="text-danger"></div>
                                <div class="form-group">
                                    <input asp-for="PunchIn1" class="form-control" />
                                    <span asp-validation-for="PunchIn1" class="text-danger"></span>
                                </div>
                            </td>
                            <td>
                                <div class="form-group">
                                    <input asp-for="PunchOut" class="form-control" />
                                    <span asp-validation-for="PunchOut" class="text-danger"></span>
                                </div>
                            </td>
                            <td>
                                <div class="form-group">
                                    <input asp-for="Remark2" class="form-control" />
                                    <span asp-validation-for="Remark2" class="text-danger"></span>
                                </div>
                            </td>
                        </tr>
                    }
                }
            }
            <input type="submit" value="Create" class="btn btn-primary" />
        </tbody>
 
    </table>
</form>

当我创建表单时，我无法收到日子价值，如何将日子价值发送到数据库？谢谢。 此外，我从前端视图而不是使用控制器（PostEnd）编写日期，但是有更好的方法吗？如何根据选择的月份和年来创建正确的日子列表，并通过其他方式进行控制器编码？

Answer 1

您没有以形式设置“ day”的值，因此您无法将其放入控制器中，请尝试：

<form asp-action="Create">
        .........
      <div class="form-group">
       @day
       <input asp-for="Day" class="form-control" value=@day hidden/>
       <span asp-validation-for="Day" value="@day" class="text-danger"></span>
       </div>
      .......
    <div class="form-group">
    <input type="submit" value="Create" class="btn btn-primary" />
    </div>

</form>

我尝试以下操作：

@{
    int year = 2022;
    int month = 3;
    int daysInMonth = DateTime.DaysInMonth(year, month);
}

<h1>Create</h1>

<h4>PunchIn</h4>
<hr />
<h2 align="center">@year @month Month</h2>
<form asp-action="Create">

    <table class="table">
        <thead>
            <tr>
                <th>
                    date
                </th>
                <th>
                    Punch in time
                </th>
                <th>
                    Puncn out time
                </th>
                <th>
                    remark
                </th>

            </tr>
        </thead>
        <tbody>           
            
            @for (int day = 1; day <= daysInMonth; day++)
            {           

            <tr>
                <td>
                    <div class="form-group">
                        @day
                        <input name =PunchIn[@(day-1)].Day asp-for="Day" class="form-control" value=@day hidden />
                        <span asp-validation-for="Day" value="@day" class="text-danger"></span>
                    </div>
                </td>
                <td>
                    <div asp-validation-summary="ModelOnly" class="text-danger"></div>
                    <div class="form-group">
                        <input name =PunchIn[@(day-1)].PunchIn1 asp-for="PunchIn1" class="form-control" />
                        <span asp-validation-for="PunchIn1" class="text-danger"></span>
                    </div>
                </td>
                <td>
                    <div class="form-group">
                        <input name =PunchIn[@(day-1)].PunchOut asp-for="PunchOut" class="form-control" />
                        <span asp-validation-for="PunchOut" class="text-danger"></span>
                    </div>
                </td>
                <td>
                    <div class="form-group">
                        <input name =PunchIn[@(day-1)].Remark2 asp-for="Remark2" class="form-control" />
                        <span asp-validation-for="Remark2" class="text-danger"></span>
                    </div>
                </td>
            </tr>
            }            
            <input type="submit" value="Create" class="btn btn-primary" />
        </tbody>

    </table>
</form>

在控制器中：结果：

public async Task<IActionResult> Create( List<PunchIn> PunchIn)
        {
           
            if (ModelState.IsValid)
            {

                var targetlist=PunchIn.Where(x => x.PunchIn1 != null).ToList();                
                _context.AddRange(targetlist);
                await _context.SaveChangesAsync();
                return RedirectToAction(nameof(Index));
            }
            
            return View();
        }

结果：