Asp.net mvc 是否在ASP.NET MVC5中查看和显示上载的文件？

有人能帮我解决这个简单的电路板问题吗

我用ASP.NET MVC5创建了一个项目，该项目从用户处获取输入文件，这是为我完成的

在“详细信息”视图中，我要创建指向该文件的链接

请帮忙

这是我的控制器：

public ActionResult Details(string id)
{
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }

            Employee employee = db.Employees.Find(id);

            if (employee == null)
            {
                return HttpNotFound();
            }

            // to view the uploaded file
            return View(employee);
}


//POST Details

// GET: Employees/Create
public ActionResult Create()
{
    return View();
}

// POST: Employees/Create
// To protect from overposting attacks, please enable the specific properties you want to bind to, for 
// more details see http://go.microsoft.com/fwlink/?LinkId=317598.
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create([Bind(Include = "id,Region,Name,Position,Qualification,Major,Experience,JoinedDate,Extension,Mobile,OfficeNo,Work_Achivement")] Employee employee, HttpPostedFileBase CV)
{
            if (ModelState.IsValid)
            {
                     if (CV != null && CV.ContentLength > 0)
                              {
                            // extract only the fielname
                            var fileName = Path.GetFileName(CV.FileName);
                            // store the file inside ~/Content/LearnObject-Repository folder
                            var path = Path.Combine(Server.MapPath("~/Content/CVs"), fileName);
                            CV.SaveAs(path);
                            var fileNameToSaveInDB = @"~/Content/CVs/" + fileName;
                        }

                db.Employees.Add(employee);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(employee);
}

// GET: Employees/Edit/5
public ActionResult Edit(string id)
{
    if (id == null)
    {
        return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
    }

    Employee employee = db.Employees.Find(id);

    if (employee == null)
    {
        return HttpNotFound();
    }

    return View(employee);
}

以下是我对细节的看法：

@model WebApplication1.Models.Employee

@{
    ViewBag.Title = "Details";
}

<h2 style="font-family:'Times New Roman', Times, serif">Employee Details</h2>

<div>

    <hr />
    <table class="table table-bordered">
        <tr>
            <th width="250" >
                @Html.DisplayNameFor(model => model.Region)
            </th>

            <td>
                @Html.DisplayFor(model => model.Region)
            </td>
        </tr>
        <tr>
            <th>
                @Html.DisplayNameFor(model => model.Name)
            </th>

            <td>
                @Html.DisplayFor(model => model.Name)
            </td>
            </tr>

        <tr>

            <th>
                @Html.DisplayNameFor(model => model.Position)
            </th>

            <td>
                @Html.DisplayFor(model => model.Position)
            </td>
            </tr>
        <tr>
            <th>
                @Html.DisplayNameFor(model => model.Qualification)
            </th>

            <td>
                @Html.DisplayFor(model => model.Qualification)
            </td>
            </tr>
        <tr>
            <th>
                @Html.DisplayNameFor(model => model.Major)
            </th>

            <td>
                @Html.DisplayFor(model => model.Major)
            </td>
        </tr>
        <tr>
            <th>
                @Html.DisplayNameFor(model => model.Experience)
            </th>

            <td>
                @Html.DisplayFor(model => model.Experience)
            </td>
        </tr>
        <tr>
            <th>
                @Html.DisplayNameFor(model => model.JoinedDate)
            </th>

            <td>
                @Html.DisplayFor(model => model.JoinedDate)
            </td>
        </tr>
        <tr>
            <th>
                @Html.DisplayNameFor(model => model.Extension)
            </th>

            <td>
                @Html.DisplayFor(model => model.Extension)
            </td>
        </tr>
        <tr>
            <th>
                @Html.DisplayNameFor(model => model.Mobile)
            </th>

            <td>
                @Html.DisplayFor(model => model.Mobile)
            </td>
        </tr>
        <tr>
            <th>
                @Html.DisplayNameFor(model => model.OfficeNo)
            </th>

            <td>
                @Html.DisplayFor(model => model.OfficeNo)
            </td>
        </tr>
        <tr>
            <th>
                @Html.DisplayNameFor(model => model.Work_Achivement)
            </th>

            <td>
                @Html.DisplayFor(model => model.Work_Achivement)
            </td>
        </tr>
        <tr>
            <th>
                @Html.DisplayNameFor(model => model.CV)
            </th>
            <td>
                @{
                    var name = Model.CV.FileName;

                    var link = @Url.Content("~/Content/CVs/") + name.Replace(" ", "%20") + ".pdf";

                    string tag = "<a href=" + link + ">" + name + "</a>";
    //var x = fname.ToString();

                }
            </td>
            </tr>
        </table>
</div>

@{
    var diffrence = DateTime.UtcNow - Model.JoinedDate;
    var Total_Years = (diffrence.TotalDays / 365);

    var KSAUHSExperience = Math.Round(Total_Years,1);

    var Years = Math.Round(Model.Experience + Total_Years);
    var months = Math.Round(Years % 12);

    @*<text>Total Experience: </text>@Html.DisplayTextFor(model => Years)<text> Years and </text>    @Html.DisplayTextFor(model => months)<text> month </text>; <br />*@



    <p style="font-family:'Times New Roman', 'Times', 'serif';font-size:medium">Total Experience:@Html.DisplayTextFor(model => Years)Years and @Html.DisplayTextFor(model => months) Monthes</p>

    <p style="font-family:'Times New Roman', 'Times', 'serif';font-size:medium"> Experience at ksau-hs @Html.DisplayTextFor(model => KSAUHSExperience)</p>

        @*<text> experience in ksau-hs </text>   @Html.DisplayTextFor(model => KSAUHSExperience)*@  
     }
<p>

    @Html.ActionLink("Back to List", "Index")
</p>

---

非常感谢

您可以这样做：

@{
   var name = Model.CV.FileName;
   var link = @Url.Content("~/Content/CVs/") + name.Replace(" ", "%20") + ".pdf";
}

<td>
<a href="@link" >@name</a>
</td>

与：

并在表中添加列，即

CV

，用于存储文件名

然后在保存前设置CV文件名并将其保存到数据库中：

if (CV != null && CV.ContentLength > 0)
{
    // extract only the fielname
    var fileName = Path.GetFileName(CV.FileName);
    // store the file inside ~/Content/LearnObject-Repository folder
    var path = Path.Combine(Server.MapPath("~/Content/CVs"), fileName);
    CV.SaveAs(path);
    var fileNameToSaveInDB = @"~/Content/CVs/" + fileName;

   employee.CV = CV.FileName;

}

db.Employees.Add(employee);

然后，鉴于：

<td>
    <a href="@(Url.Content("~/Content/CVs/"+Model.CV))">@Model.CV</a>
</td>

我可以知道您上传的文件类型吗？var name=model.CV.FileName的问题；对象引用未设置为对象的实例。@Ehsanit表示它

CV

为空。非常感谢您的帮助，但是CV不是空的。我已经上载了文件。文件名有问题，如何获取文件名？在bedug模式下检查，Model.CV将为空

[NotMapped]
[Display(Name = "C.V")]
[DataType(DataType.Upload)]
public HttpPostedFileBase CV { get; set; }

[NotMapped]
[Display(Name = "C.V")]
[DataType(DataType.Upload)]
public string CV { get; set; }

if (CV != null && CV.ContentLength > 0)
{
    // extract only the fielname
    var fileName = Path.GetFileName(CV.FileName);
    // store the file inside ~/Content/LearnObject-Repository folder
    var path = Path.Combine(Server.MapPath("~/Content/CVs"), fileName);
    CV.SaveAs(path);
    var fileNameToSaveInDB = @"~/Content/CVs/" + fileName;

   employee.CV = CV.FileName;

}

db.Employees.Add(employee);

<td>
    <a href="@(Url.Content("~/Content/CVs/"+Model.CV))">@Model.CV</a>
</td>