Question

尝试将文件上传到数据库，并且想知道是否有人可以帮助我，因为我已经陷入困境，并且没有错误。会发生什么，我的视图显示我上传文件的位置。只要我点击上传按钮，它就会将我带回应用程序的CreateCover上传页面，但无法将任何内容上传到数据库。

如果有人能提供任何帮助，我会很高兴：）

PS：http://www.mikesdotnetting.com/Article/125/ASP.NET-MVC-Uploading-and-Downloading-Files - ＆gt;这是我最初关注的教程。我试图用它作为我想做的基础。

以下是我的代码片段：

CoverController.cs

//
        //GET: /File/CreateCover
        public ActionResult CreateCover()
        {
            Cover cover = new Cover();

            return View(cover);
        }

        //
        //POST: /File/CreateCover
        [HttpPost]
        public ActionResult CreateCover(FormCollection formvalues)
        {
            Cover cover = new Cover();

            cover.CoverMimeType = Request.Files["CoverUpload"].ContentType;
            Stream fileStream = Request.Files["CoverUpload"].InputStream;
            cover.CoverFileName = Path.GetFileName(Request.Files["CoverUpload"].FileName);
            int fileLength = Request.Files["CoverUpload"].ContentLength;
            cover.CoverFileContent = new byte[fileLength];
            fileStream.Read(cover.CoverFileContent, 0, fileLength);

            filerepository.Save();

            return View(cover);
        }

Cover.cs

 [MetadataType(typeof(Cover_Validation))]
    public partial class Cover
    {
        //
    }

    public class Cover_Validation
    {
        [Required(ErrorMessage = "Please enter a file")]
        [StringLength(50, ErrorMessage = "You have not selected a cover image to upload")]
        public byte[] CoverFileContent;

        [Required(ErrorMessage = "A MimeType is required")]
        [StringLength(13, ErrorMessage = "Your file must contain a MimeType")]
        public string CoverMimeType { get; set; }

        [Required(ErrorMessage = "A Filename is required")]
        [StringLength(13, ErrorMessage = "Your file must have a filename")]
        public string CoverFileName { get; set; }
    }

FileRepository与添加封面相关的片段

//Insert Cover Data
public void AddCoverData(Cover cover)
{
    entities.Covers.AddObject(cover);
}

最后这里是CreateCover视图

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<SampleApp.Models.Cover>" %>

<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
    CreateCover
</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">

    <h2>CreateCover</h2>

    <% using (Html.BeginForm("CreateCover", "Cover", FormMethod.Post, new { enctype = "multipart/form-data" }))
       { %>
    <asp:Label ID="Label2" runat="server" Text="Please Select your eBook Cover" /><br />
    <input type="file" name="CoverUpload" /><br />
    <input type="submit" name="submit" id="Submit" value="Upload" />

    <% } %>

    <div>
        <%: Html.ActionLink("Back to List", "Index") %>
    </div>

</asp:Content>

Answer 1

您正被重定向到主页，因为这是您将表单发布到的位置。

您需要在CreateCover上发布CoverController操作。

E.g。

<% using (Html.BeginForm("CreateCover",
                         "Cover",
                         FormMethod.Post,
                         new { enctype = "multipart/form-data" })) { %>

HTHS，
查尔斯

MVC中的文件上传

1 个答案: