Question

I have some code to get my data using a min_row/max_row. I want to pass in the page number rom my menu as well as the paging links.

My main menu has this code:

@Html.ActionLink("MyDocuments", "", "Home/MyDocuments/1")

My paging links look like this:
(they will be built on the fly from a total record count sent in the ViewBag, not done with that part yet):

<ul>
  <li><a href="#">Prev</a></li>
  <li class="active"><a href="/Home/MyDocuments/1">1</a></li>
  <li><a href="/Home/MyDocuments/2">2</a></li>
  <li><a href="/Home/MyDocuments/3">3</a></li>
  <li><a href="/Home/MyDocuments/4">4</a></li>
  <li><a href="#">Next</a></li>
</ul>

Here is my controller action:

public ActionResult MyDocuments(int Page)
{
    string min = (Page-1*50).ToString();
    string max = (50 / Page).ToString();
    // mps is a webservice reference 
    Archive docs = mps.GetArchiveArray(LogonTicket, PID, "SortColumn", max, min, "ASC");
    ViewBag.docs = docs;
    return View();
}

Now, when I click on the main menu item, I get this error:

The parameters dictionary contains a null entry for parameter 'Page' 
of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult 
MyDocuments(Int32)' in 'MVC3MySite.Controllers.HomeController'.

Here is my MapRoutes in Global.asax.cs:

routes.MapRoute(
    "Default", // Route name
    "{controller}/{action}/{id}", // URL with parameters
    new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
);

How do I circumvent this error?

Answer 1

Try changing

@Html.ActionLink("MyDocuments", "", "Home/MyDocuments/1")

to

@Html.ActionLink("MyDocuments", "MyDocuments","Home",null, new {Page=1})