使用部分渲染时出错

Question

hello I have been trying to use partial render to access the view model of my partial view from the main view

The partial view is a dialog , when I click a button, the dialog is opened and I load it by calling controller here is the code of the controller :

public ActionResult ImagesPartial()
{
    ViewBag.Images = Directory.EnumerateFiles(Server.MapPath("~/images_upload"))
                      .Select(fn => "~/images_upload/" + Path.GetFileName(fn));
    return PartialView("_ImagesPartial");
}

the In my partial view I use this code to show the images and a radio button

@foreach(var image in (IEnumerable<string>)ViewBag.Images)
{
    @Html.RadioButtonFor(model => model.imageVenteCatalog, image)
    <img src="@Url.Content(image)" alt="Hejsan" width="100" height="100" class='selectable-image'/>
 }

finally in my main view I use renderpartial to get which radiobutton has been selected

@{Html.RenderPartial("_ImagesPartial");}

But instead I'm getting an error saying reference undefined

any idea of what it could be ?

EDIT:

It doesn't matter for viewdata[""] , I have deleted it , the problem is here

@foreach(var image in (IEnumerable)ViewBag.Images)

But why would this cause a problem

Answer 1

Html.RenderPartial不调用动作，它仅呈现View，并且您希望调用该动作，以便填充ViewBag.Images ，我怀疑您希望使用Html.RenderAction来代替：

@{ Html.RenderAction("ImagesPartial","ControllerName"); }

Answer 2

For populated with model you have to use as per below :

@Html.Partial("_ImagesPartial", Model)

In your view

And Change in your Controller

public ActionResult ImagesPartial()
{
    //strore data in your model class data
    return PartialView("_ImagesPartial", pass your model data);
}