表单集合为空当我使用enctype进行文件上传时

时间:2012-03-18 09:21:54

标签: c# asp.net asp.net-mvc

我正在asp.net中开发一个应用程序,我将上传文件,但是当我使用enctype =“multipart / form-data”时表单集合是空的,当我不使用enctype时,表单集合的名称为上传文件但Request.Files.count = 0.我想获取文件上传以及表单集合中上传文件的名称。任何解决方案?

3 个答案:

答案 0 :(得分:1)

使用以下代码查看:

通过以下代码以视图形式添加编码类型:

@using (Html.BeginForm("Create", "Employees", FormMethod.Post,new{ enctype="multipart/form-data"}))
{   
     @Html.TextBoxFor(model => model.Name)

     @Html.TextBoxFor(model => model.Resume, new { type = "file" })

    <p>
    <input type="submit" value="Save" />
    </p>
@Html.ValidationSummary()
}

在控制器的相应操作中添加以下代码,

[HttpPost]
public ActionResult Create(EmployeeViewModel viewModel)
{
       if (Request.Files.Count > 0)
        {
            foreach (string file in Request.Files)
            {
                string pathFile = string.Empty;
                if (file != null)
                {
                    string path = string.Empty;
                    string fileName = string.Empty;
                    string fullPath = string.Empty;
                    path = AppDomain.CurrentDomain.BaseDirectory + "directory where you want to upload file";//here give the directory where you want to save your file
                    if (!System.IO.Directory.Exists(path))//if path do not exit
                    {
                        System.IO.Directory.CreateDirectory(AppDomain.CurrentDomain.BaseDirectory + "directory_name/");//if given directory dont exist, it creates with give directory name
                    }
                    fileName = Request.Files[file].FileName;

                    fullPath = Path.Combine(path, fileName);
                    if (!System.IO.File.Exists(fullPath))
                    {

                        if (fileName != null && fileName.Trim().Length > 0)
                        {
                            Request.Files[file].SaveAs(fullPath);
                        }
                    }
                }
            }
        }
}

我的路径将位于基于目录的目录....你可以给自己想要保存文件的路径

答案 1 :(得分:0)

以下对我来说很好:

@using (Html.BeginForm("someaction", "somecontroller", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    <input type="file" name="file" />
    <button type="submit">Upload</button>
}

请注意,文件输入必须具有name,稍后将在控制器操作中使用该文件来获取文件。您获得Request.File.Count = 0的事实非常强烈地表明您没有为输入字段提供名称。

和行动:

[HttpPost]
public ActionResult SomeAction(HttpPostedFileBase file)
{
    if (file != null && file.ContentLength > 0)
    {
        var filename = Path.GetFileName(file.FileName);
        filename = Path.Combine(Server.MapPath("~/uploads"), filename);
        file.SaveAs(filename);
    }
    return View();
}

如果你想使用FormCollection(我不推荐):

[HttpPost]
public ActionResult SomeAction()
{
    var file = Request.Files["file"];
    if (file != null && file.ContentLength > 0)
    {
        var filename = Path.GetFileName(file.FileName);
        filename = Path.Combine(Server.MapPath("~/uploads"), filename);
        file.SaveAs(filename);
    }
    return View();
}

您也可以结帐following blog post

答案 2 :(得分:0)

使用方法:

@Microsoft.Web.Helpers.FileUpload.GetHtml("File", 1, false, false, null, null)

然后在你的控制器中:

public ActionResult YourAction()
{
    Request.Files[0]; //Check this out !
}

更多信息:

StackOverFlow:https://stackoverflow.com/a/5060318

Tallan博客:http://blog.tallan.com/2011/02/04/using-mvc3-razor-helpers-and-jcrop-to-upload-and-crop-images/