ASP.NET CORE MVC: где в контроллере разместить расчеты разницы в день и как затем показать в представлении индекса ⇐ C#

[Anonymous]

Мне нужно иметь возможность рассчитать количество рабочих дней между двумя датами: от dateRequestmade до датирования . Я использовал этот код, который я нашел: < /p>

Код: Выделить всё

var calculatedBusinessDays =
1 + ((DateIssued - DateRequestMade).TotalDays * 5 -
(DateRequestMade.DayOfWeek - DateIssued.DayOfWeek) * 2) / 7;

if (DateIssued.DayOfWeek == DayOfWeek.Saturday)
calculatedBusinessDays--;

if (DateRequestMade.DayOfWeek == DayOfWeek.Sunday)
calculatedBusinessDays--;

BusinessDays = (int)calculatedBusinessDays;

ViewBag.Result = BusinessDays;

и помещал его в два места в разделе Create httppost - начало контроллера + create :

Код: Выделить всё

using System;
using System.Collections;
using System.Linq;
using System.Threading.Tasks;
using DocumentFormat.OpenXml.Office2010.Excel;
using FluentValidation;
using FluentValidation.AspNetCore;
using FluentValidation.Results;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Rendering;
using Microsoft.Data.SqlClient;
using Microsoft.EntityFrameworkCore;
using Research.Data;
using ValidatorAttribute = ServiceStack.FluentValidation.Attributes.ValidatorAttribute;

using Research.Models;
using Microsoft.CodeAnalysis.VisualBasic.Syntax;

namespace Research.Controllers
{
public class LofAccessHCsController : Controller
{
private readonly ResearchContext _context;

public LofAccessHCsController(ResearchContext context)
{
_context = context;
}

// GET: LofAccessHCs
[HttpGet]
public async Task Index(
string sortOrder,
string currentFilter,
string searchString,
int? pageNumber)
{
ViewData["CurrentSort"] = sortOrder;
ViewData["ProjIDSortParm"] = String.IsNullOrEmpty(sortOrder) ? "Proj_desc" : "";

if (searchString != null)
{
pageNumber = 1;
}
else
{
searchString = currentFilter;
}

ViewData["CurrentFilter"] = searchString;

var aField = from s in _context.LofAccessHC
select s;

if (!String.IsNullOrEmpty(searchString))
{
aField = aField.Where(s => s.ProjectID != null).Where(predicate: s => s.ProjectID.ToString().Contains(searchString));
}

switch (sortOrder)
{
case "Proj_desc":
aField = aField.OrderByDescending(s => s.ProjectID);
break;

default:
aField = aField.OrderBy(s => s.ProjectID);
break;
}

int pageSize = 100;

return View(await PaginatedList.CreateAsync(aField.AsNoTracking(), pageNumber ?? 1, pageSize));
}
}

// GET: LofAccessHCs/Create
[HttpGet]
public IActionResult Create( )
{
ViewData["ProjectID"] = new SelectList(_context.PIF, "ProjectID", "ProjectID");

var type = _context.LofAccessType!.ToList();
ViewBag.type = type;

var yn = _context.YesNoList!.ToList();
ViewBag.yn = yn;

return View();
}

// POST: LofAccessHCs/Create
[HttpPost]
[ValidateAntiForgeryToken]
public async Task  Create(
[Bind("LetterOfAccessHCID,ProjectID,DateRequestMade,RequestedBy,WithResearchPassport,DateIssued,DateofExpiry,IssuedTo,LoAType,businessDays")] LofAccessHC lofAccessHC, DateTime DateIssued, DateTime DateRequestMade, int BusinessDays,
string action,
string returnUrl)
{
LofAccessHCValidator lofaccesshcvalidator = new LofAccessHCValidator();
ValidationResult result = lofaccesshcvalidator.Validate(lofAccessHC);

// When validation failed, return to Index View
if (!ModelState.IsValid)
{
foreach (var failure in result.Errors)
{
ModelState.AddModelError(failure.PropertyName, failure.ErrorMessage);
}

ViewData["ProjectID"] = new SelectList(_context.PIF, "ProjectID", "ProjectID", lofAccessHC.ProjectID);

var type = _context.LofAccessType!.ToList();
ViewBag.type = type;

var yn = _context.YesNoList!.ToList();
ViewBag.yn = yn;

return View(lofAccessHC);
}
}

// Perform DB update after validation is passed
if (action == "SaveAndBack" && !String.IsNullOrEmpty(returnUrl))
{
try
{
_context.Add(lofAccessHC);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!LofAccessHCExists(lofAccessHC.LetterOfAccessHCID))
{
return NotFound();
}
else
{
throw;
}
}

var calculatedBusinessDays =
1 + ((DateIssued - DateRequestMade).TotalDays * 5 -
(DateRequestMade.DayOfWeek - DateIssued.DayOfWeek) * 2) / 7;

if (DateIssued.DayOfWeek == DayOfWeek.Saturday)
calculatedBusinessDays--;

if (DateRequestMade.DayOfWeek == DayOfWeek.Sunday)
calculatedBusinessDays--;

// Fix: Assign the calculated value to the outer scope variable 'BusinessDays' if needed.
BusinessDays = (int)calculatedBusinessDays;

// Ensure all code paths return a value
ViewBag.Result = BusinessDays;

// Ensure all code paths return a value
// Redirection after model validation passed and successfully update to database
var redirectUrl = Url.Action("Details", "PIFs", new { id = lofAccessHC.ProjectID });

if (string.IsNullOrEmpty(redirectUrl))
{
return NotFound(); // Handle the case where the URL could not be generated
}

return Redirect(redirectUrl);
}
else
{
try
{
_context.Add(lofAccessHC);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!LofAccessHCExists(lofAccessHC.LetterOfAccessHCID))
{
return NotFound();
}
else
{
throw;
}
}

var calculatedBusinessDays =
1 + ((DateIssued - DateRequestMade).TotalDays * 5 -
(DateRequestMade.DayOfWeek - DateIssued.DayOfWeek) * 2) / 7;

if (DateIssued.DayOfWeek == DayOfWeek.Saturday)
calculatedBusinessDays--;

if (DateRequestMade.DayOfWeek == DayOfWeek.Sunday)
calculatedBusinessDays--;

// Fix: Assign the calculated value to the outer scope variable 'BusinessDays' if needed.
BusinessDays = (int)calculatedBusinessDays;

// Ensure all code paths return a value
ViewBag.Result = BusinessDays;

return RedirectToAction(nameof(Index));
}
}

index view:

Код: Выделить всё

@Html.DisplayFor(modelItem => item.BusinessDays)

Я очень новичок во всем этом - где я пошел не так, поскольку он не показывает никакого значения в представлении «Индекс ». Спасибо.

Подробнее здесь: https://stackoverflow.com/questions/797 ... ay-differe