将pdf或doc上传到ASP.NET MVC-5应用程序的数据库中

Question

嗨， 我一直在学习ASP.NET以及通过MVC应用程序完成一个小项目。 我的申请是基于机构提出产品的购买请求。它是所有数据存储在DB中的基本形式。 如何将上传PDF或DOC添加到此编码中，以便在提交表单时上传pdf报价。

**

1. 我的模特

**

namespace sparki02.Models{
public class PRview
{
    public int Id { get; set; }
    [DataType(DataType.Html)]
    public string Caption { get; set; }
    [Required]
    [DataType(DataType.ImageUrl)]
    public string ImageUrl { get; set; }
    [Required]
    [StringLength(100)]
    [Display(Name = "Supplier Name")]
    public string SupplierName { get; set; }
    [Required]
    [StringLength(255)]
    [Display(Name = "Material Name")]
    public string MATName { get; set; }
    [Required]
    [StringLength(100)]
    public string Brand { get; set; }
    public PRtype PRtype { get; set; }
    [Display(Name = "PR Type")]
    public byte PRtypeId { get; set; }
    [Required]
    [Display(Name = "Unit Price")]
    public double Unitprice { get; set; }}}

**

2。控制器

**

    public ActionResult NewPR()
    {var prtypes = _context.PRtypes.ToList();
     var viewModel = new NewPRViewModel
    {PRview = new PRview(), 
     PRtypes = prtypes};

    return View("NewPR", viewModel);
    }

    [HttpPost]
    public ActionResult Save(PRview prview, NewPRViewModel model)
    {

        var validImageTypes = new string[]
        {
            "image/gif",
            "image/jpeg",
            "image/pjpeg",
            "image/png"
        };

        if (model.ImageUpload == null || model.ImageUpload.ContentLength == 0)
        {
            ModelState.AddModelError("ImageUpload", "This field is required");
        }
        else if (validImageTypes.Contains(model.ImageUpload.ContentType))
        {
            ModelState.AddModelError("ImageUpload", "Please choose either a GIF, JPG or PNG image.");
        }



        if (!ModelState.IsValid)
        {
            var viewModel = new NewPRViewModel
            {
                PRview = prview, 
                PRtypes = _context.PRtypes.ToList(),
                Caption = model.Caption
            };


            return View("NewPR", viewModel);
        }

        if (prview.Id == 0)
            _context.PRviews.Add(prview);

        else
        {

            var prviewInDb = _context.PRviews.Single(c => c.Id == prview.Id);

            prviewInDb.PRtypeId = prview.PRtypeId; 
            prviewInDb.MATName = prview.MATName;
            prviewInDb.SupplierName = prview.SupplierName;
            prviewInDb.Brand = prview.Brand;
            prviewInDb.Unitprice = prview.Unitprice;
            prviewInDb.ImageUrl = prview.ImageUrl;

            if (model.ImageUpload != null && model.ImageUpload.ContentLength > 0)
            {
                var uploadDir = "~/uploads";
                var imagePath = Path.Combine(Server.MapPath(uploadDir), model.ImageUpload.FileName);
                var imageUrl = Path.Combine(uploadDir, model.ImageUpload.FileName);
                model.ImageUpload.SaveAs(imagePath);
                prview.ImageUrl = imageUrl;

            }

        }

        _context.SaveChanges();
        return RedirectToAction("Index", "PRview");

**

1. 我的视图块

**仅与文件上传相关的内容

{ @model sparki02.ViewModels.NewPRViewModel
  @using (Html.BeginForm("Save", "PRview", FormMethod.Post, new { enctype =    "multipart/form-data" }))
{@Html.ValidationSummary(true, "Please fix the following errors.")
<div>
    @Html.LabelFor(m => m.Caption)
    @Html.EditorFor(m => m.Caption)
</div>
<div>
    @Html.LabelFor(m => m.ImageUpload)
    @Html.TextBoxFor(m => m.ImageUpload, new { type = "file" })
</div>
<button type="submit">Create</button>

    <div class="form-group">
        <button type="submit" class="btn btn-primary">Save</button>
    </div>
    <div class="form-group"> <p> @DateTime.Now</p> </div>

}