文件上载ASP.NET MVC

Question

Basically what I have at the moment is a ASP.NET MVC project made database first the tables take alpha numeric input but I think it would be pretty nifty to have a file upload so I can insert a picture into the database so I created a table in SQL server with an ID field and an image field with the data type image.

When i add this model and create my controller and views based on that model it doesn't create the label or editor for this field, I used DataAnnotations to give it the DataType upload but I can't find a way of actually uploading the file I tried this which works for normal input but nothing shows up is there a way of having a @HTML.FileUploadFor(model => model.Vehicle) or something along those lines.

This is what I've tried

<div class="editor-label">
    @Html.LabelFor(model => model.Vehicle)
</div>
<div class="editor-field">
    @Html.EditorFor(model => model.Vehicle)
    @Html.ValidationMessageFor(model => model.Vehicle)
</div>

This is my model

public partial class VehicleImage
{
    public int Vehicle_ID { get; set; }
    [DataType(DataType.Upload)]
    public byte[] Vehicle { get; set; }
}

Answer 1

There are many approaches to this.

I usually use a jquery plugin called Uploadify.

Have a look at this post - https://stackoverflow.com/a/17520062/1581026

Another way is just by adding the following in your view inside your form:

<input type="file" name="Picture" />

Your form element needs to look like the following:

 @using ( Html.BeginForm( "ACTION", "CONTROLLER", FormMethod.Post, new { enctype = "multipart/form-data" }))

And then on your model that is getting passed to your POST Action you can add a attribute:

public HttpPostedFileBase Picture {get; set; }

Or you can also just add it as a parameter in your POST Action:

[HttpPost]
Public ActionResult SomeAction(HttpPostedFileBase Picture, .....)

Answer 2

There isn't a standard control or helper for files as far as I know. However here is a nice tutorial to achieve what you want.

http://haacked.com/archive/2010/07/16/uploading-files-with-aspnetmvc.aspx/

Furthermore, if you really want this functionality, you can write an html helper yourself.

1. by writing an extensionmethod to the HtmlHelper object
2. By declaring a code block in your view eg:

@helper MyHelper(string id){ <input type="file" id="@id" /> }

Answer 3

try something like this:

Create this type of view

    using (Html.BeginForm("FileUpload", "FileUpload", 
                FormMethod.Post, new { enctype = "multipart/form-data" }))
    {
      <input name="uploadFile" type="file" />
      <input type="submit" value="Upload File" />
    }

Here is controller method

[AcceptVerbs(HttpVerbs.Post)]
public ActionResult FileUpload(HttpPostedFileBase uploadFile)
{
}

Please refer this link : http://www.codeproject.com/Articles/38970/Implementing-HTTP-File-Upload-with-ASP-NET-MVC