Question

I need to add an attribute to the form tag (Html.BeginForm) and the value of this attribute must be the parameter of the edit action (ID).

How can I do this?

Here is my action code:

    //
    // GET: /Panel/Partners/Edit/5

    public ActionResult Edit(int id)
    {
        var repository = new PartnersRepository();

        var data = repository.Find(id);

        return View(data);
    }

And here is the code for the form tag:

    @using (Html.BeginForm("Edit", "Partners", 
    FormMethod.Post, 
    new { 
        enctype = "multipart/form-data", 
        id = "partnersForm", 
        data_removelogo = @Url.Action("RemoveLogo", "Partners", new { Area = "Panel", id = Model.ID }) }
        ))

The Url.Action from the data_removelogo attribute doesn’t work with the Model.ID property.

Answer 1

From your comments it sounds like you are passing a null model into your view. When you try and access any properties on a null reference you’re going to get the error you’re getting. You either need to make sure in your controller that you don’t pass in a null model, or in your view you’re going to need logic to handle a null model, such as checking for null before accessing the id.