Bind value to model in Asp.Net MVC Application

问题

In my model i have a HttpPostedFileBase property as File. In the view I have a textbox "A" and a button "B". I also have a hidden input type="file" id ="file "on my page. On B click i trigger the #file.click in my javascript. The selected file should then bind to the model property and the file name should be displayed on the textbox. I am unable to do this. Any help? I hope the question is clear, if not please tell me so that i can elaborate further.

Any help?

Edit 1:

Model:

public class FileUploadModel
    {
        public HttpPostedFileBase File { get; set; }
        public string FileName {get;set;}
    }

View:

<script type="text/javascript">
    $(document).ready(function () {

        $("#Browse").click(function () {

            $("#fileIputType").trigger('click');

           //now the file select dialog box opens up
          // The user selects a file
          // The file should get associated with the model property in this view
          // the textbox should be assigned the filename 

        });
    });
</script>


    @Html.TextBox("fileTextBox", Model.FileName, new { id = "fileTextBox" })

        <input type="button" id="Browse" name="Browse" value="Browse" />

        <input type="file" id="fileInputType" style="visibility:hidden"/> 

        @Html.Hidden("ModelType", Model.GetType())

  //How can i bind the selected file to the model property ( public HttpPostedFileBase File )

回答1:

Assign File to the name property of your file input

    <input type="file" name="File" id="fileInputType" style="visibility:hidden"/>

And this would bind to HttpPostedFileBase file parameter in your action method when you submit the form.

Edit:

Remeber to set your form's entype to multipart/form-data

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

回答2:

You can't set the input type='file' elements value property in javascript programatically.

Why dont you show the File name as a label text? Have a FileName property in your model(viewmodel) class

@model MyViewModel

{

<label>@Model.FileName</label>
}

EDIT:

Based on your code

public class FileUploadModel
{
    public HttpPostedFileBase File { get; set; }
    public string FileName {get;set;}
}

In view

 @Html.TextBoxFor(m => m.File, new { type = "file" })

In Controller

    using (MemoryStream memoryStream = new MemoryStream())
    {
        model.File.InputStream.CopyTo(memoryStream);
    }

来源：https://stackoverflow.com/questions/19834364/bind-value-to-model-in-asp-net-mvc-application

标签

javascript

asp.net-mvc

model-view-controller

view