آپلود فایل و حذف فایل در ASP.NET Core – جلسه ۵۲

    public class CreateCostViewModel
    {
        [Column(TypeName = "decimal(18, 2)")]
        [Required]
        [DataType(DataType.Currency)]
        public decimal Amount { get; set; }
        [Required]
        [DataType(DataType.Date)]
        [Display(Name = "Registered Data")]
        public DateTime RegisteredDate { get; set; }
        [MaxLength(150)]
        public string Comment { get; set; }
        [Required]
        [Display(Name = "Category")]
        [RegularExpression("^\\d+$", ErrorMessage ="Please select a category")]
        public int CategoryID { get; set; }
        [Display(Name = "Payment Method")]
        [Required(ErrorMessage ="This option is mandetory, please select a payment method")]
        public PaymentMethods? PaymentMethod { set; get; }
        public IFormFile UploadFile { get; set; }
    }

@model CreateCostViewModel

@{
    ViewBag.Title = "Create Cost";
}
<form enctype="multipart/form-data" asp-controller="Cost" asp-action="Create" method="post" class="mt-5 offset-3 col-6 border border-primary pt-2 pb-2 px-2 py-2">
    <div>
        <label asp-for="Amount" class="form-label"></label>
        <input asp-for="Amount" class="form-control" />
        <span asp-validation-for="Amount" class="text-danger"></span>
    </div>
    <div>
        <label asp-for="RegisteredDate" class="form-label"></label>
        <input asp-for="RegisteredDate" class="form-control" />
        <span asp-validation-for="RegisteredDate" class="text-danger"></span>
    </div>
    <div>
        <label asp-for="Comment" class="form-label"></label>
        <input asp-for="Comment" class="form-control" />
        <span asp-validation-for="Comment" class="text-danger"></span>
    </div>
    <div>
        <label asp-for="CategoryID" class="form-label"></label>
        <select asp-for=CategoryID asp-items="@ViewBag.Categories" class="form-select"></select>
        <span asp-validation-for="CategoryID" class="text-danger"></span>
    </div>
    <div>
        <label asp-for="PaymentMethod" class="form-label"></label>
        <select asp-for="PaymentMethod" class="form-select" asp-items="@ViewBag.PaymentMethods"></select>
        <span asp-validation-for="PaymentMethod" class="text-danger"></span>
    </div>
    <div>
        <label asp-for="UploadFile" class="form-label"></label>
        <input asp-for="UploadFile" class="form-control" />
    </div>
    <div><button type="submit" class="btn btn-primary mt-2">Create</button></div>
</form>

        private readonly ICostRepository costRepository;
        private readonly ICategoryRepository categoryRepository;
        private readonly IWebHostEnvironment webHostEnvironment;

        public CostController(ICostRepository _costRepository, ICategoryRepository _categoryRepository, 
            IWebHostEnvironment _webHostEnvironment)
        {
            costRepository = _costRepository;
            categoryRepository = _categoryRepository;
            webHostEnvironment = _webHostEnvironment;
        }

        private string UploadFile(IFormFile formFile)
        {
            string UniqueFileName = Guid.NewGuid().ToString() + "-" + formFile.FileName;
            string TargetPath = Path.Combine(webHostEnvironment.WebRootPath, "images", UniqueFileName);
            using (var stream = new FileStream(TargetPath, FileMode.Create))
            {
                formFile.CopyTo(stream);
            }
            return UniqueFileName;
        }

        [HttpPost]
        public IActionResult Create(CreateCostViewModel model)
        {
            if (ModelState.IsValid)
            {
                Cost cost = new()
                {
                    Amount = model.Amount,
                    Comment = model.Comment,
                    RegisteredDate = model.RegisteredDate,
                    CategoryID = model.CategoryID,
                    PaymentMethod = model.PaymentMethod
                };
                if(model.UploadFile != null)
                {
                    cost.InvoiceImagePath = UploadFile(model.UploadFile);
                }
                costRepository.Create(cost);
                return RedirectToAction("Index");
            }
            LoadDropdownList();
            return View(model);
        }

    public class UpdateCostViewModel : CreateCostViewModel
    {
        public int ID { get; set; }
        public string ExsitingFile { get; set; }
    }

@model UpdateCostViewModel
@{
    ViewBag.Title = "Create Cost";
    var imagepath = "~/images/" + (Model.ExsitingFile ?? "no-image.png");
}
<form asp-controller="Cost" enctype="multipart/form-data" asp-action="Update" method="post" class="mt-5 offset-3 col-6 border border-primary pt-2 pb-2 px-2 py-2">
    <input hidden asp-for="ID" />
    <div>
        <label asp-for="Amount" class="form-label"></label>
        <input asp-for="Amount" class="form-control" />
        <span asp-validation-for="Amount" class="text-danger"></span>
    </div>
    <div>
        <label asp-for="RegisteredDate" class="form-label"></label>
        <input asp-for="RegisteredDate" class="form-control" />
        <span asp-validation-for="RegisteredDate" class="text-danger"></span>
    </div>
    <div>
        <label asp-for="Comment" class="form-label"></label>
        <input asp-for="Comment" class="form-control" />
        <span asp-validation-for="Comment" class="text-danger"></span>
    </div>
    <div>
        <label asp-for="CategoryID" class="form-label"></label>
        <select asp-for=CategoryID asp-items="@ViewBag.Categories" class="form-select"></select>
        <span asp-validation-for="CategoryID" class="text-danger"></span>
    </div>
    <div>
        <label asp-for="PaymentMethod" class="form-label"></label>
        <select asp-for="PaymentMethod" class="form-select" asp-items="@ViewBag.PaymentMethods"></select>
        <span asp-validation-for="PaymentMethod" class="text-danger"></span>
    </div>
    <div>
        <label asp-for="UploadFile" class="form-label"></label>
        <input asp-for="UploadFile" class="form-control" />
    </div>
    <img src="@imagepath" asp-append-version="true" class="img-thumbnail"/>
    <div class="row mt-2">
        <div class="col-3 d-grid">
            <button type="submit" class="btn btn-primary">Edit</button>
        </div>
        <div class="col-3 d-grid">
            <a asp-action="index" class="btn btn-info">Cost List</a>
        </div>
    </div>
</form>

@model Cost
@{
    ViewBag.Title = "Cost Detail";
    var imagepath = "~/images/" + (Model.InvoiceImagePath ?? "no-image.png");
}
<div class="row">
    <div class="col-lg-4 offset-lg-4 col-md-6 offset-md-3 col-12">
        <div class="card">
            <img  src="@imagepath" class="card-img-top" asp-append-version="true"/>
            <div class="card-header">
                Detail Cost ID @Model.ID
            </div>
            <div class="card-body">
                <p class="card-text">Amount: @Model.Amount</p>
                <p class="card-text">Category: @Model.CategoryID</p>
                <p class="card-text">Comment: @Model.Comment</p>
                <p class="card-text">Payment Method: @Model.PaymentMethod</p>
                <a class="btn btn-primary" asp-controller="cost" asp-action="index">Cost List</a>
            </div>
        </div>
    </div>
</div>

    [HttpGet]
    public IActionResult Update(int id)
    {
        var cost = costRepository.GetCostByID(id);
        UpdateCostViewModel model = new()
        {
            ID = cost.ID,
            Amount = cost.Amount,
            RegisteredDate = cost.RegisteredDate,
            Comment = cost.Comment,
            CategoryID = cost.CategoryID,
            PaymentMethod = cost.PaymentMethod,
            ExsitingFile = cost.InvoiceImagePath
        };
        LoadDropdownList();
        return View(model);
    }

        [HttpPost]
        public IActionResult Update(UpdateCostViewModel model)
        {
            if (ModelState.IsValid)
            {
                Cost UpdatedCost = costRepository.GetCostByID(model.ID);
                UpdatedCost.Amount = model.Amount;
                UpdatedCost.RegisteredDate = model.RegisteredDate;
                UpdatedCost.Comment = model.Comment;
                UpdatedCost.CategoryID = model.CategoryID;
                UpdatedCost.PaymentMethod = model.PaymentMethod;
                if(model.UploadFile != null)
                {
                    if(UpdatedCost.InvoiceImagePath != null)
                    {
                        string ExitingFile = Path.Combine(webHostEnvironment.WebRootPath, "images", UpdatedCost.InvoiceImagePath);
                        System.IO.File.Delete(ExitingFile);
                    }
                    UpdatedCost.InvoiceImagePath = UploadFile(model.UploadFile);
                }
                costRepository.Update(UpdatedCost);
                return RedirectToAction("Index");
            }
            LoadDropdownList();
            return View(model);
        }

        [HttpPost]
        public IActionResult Delete(int id)
        {
            Cost cost = costRepository.GetCostByID(id);
            if (cost.InvoiceImagePath != null)
            {
                string ExitingFile = Path.Combine(webHostEnvironment.WebRootPath, "images", cost.InvoiceImagePath);
                System.IO.File.Delete(ExitingFile);
            }
            costRepository.Delete(id);
            return RedirectToAction("index");
        }