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POASP.Net MVC3 external data paging
 

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  1. POASP.Net MVC3 external data paging
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    <p>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.</p> <p>My main menu has this code:</p> <pre><code>@Html.ActionLink("MyDocuments", "", "Home/MyDocuments/1") </code></pre> <p>My paging links look like this:<br> (they will be built on the fly from a total record count sent in the ViewBag, not done with that part yet):</p> <pre><code>&lt;ul&gt; &lt;li&gt;&lt;a href="#"&gt;Prev&lt;/a&gt;&lt;/li&gt; &lt;li class="active"&gt;&lt;a href="/Home/MyDocuments/1"&gt;1&lt;/a&gt;&lt;/li&gt; &lt;li&gt;&lt;a href="/Home/MyDocuments/2"&gt;2&lt;/a&gt;&lt;/li&gt; &lt;li&gt;&lt;a href="/Home/MyDocuments/3"&gt;3&lt;/a&gt;&lt;/li&gt; &lt;li&gt;&lt;a href="/Home/MyDocuments/4"&gt;4&lt;/a&gt;&lt;/li&gt; &lt;li&gt;&lt;a href="#"&gt;Next&lt;/a&gt;&lt;/li&gt; &lt;/ul&gt; </code></pre> <p>Here is my controller action:</p> <pre><code>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(); } </code></pre> <p>Now, when I click on the main menu item, I get this error:</p> <pre><code>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'. </code></pre> <p>Here is my MapRoutes in Global.asax.cs:</p> <pre><code>routes.MapRoute( "Default", // Route name "{controller}/{action}/{id}", // URL with parameters new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults ); </code></pre> <p>How do I circumvent this error?</p>
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    1. COAnswer below is right, or change Action parameter to int id. btw: string min = ((Page-1)*50).ToString()
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    2. COChanging the parameter to id resulted in this: `The parameters dictionary contains a null entry for parameter 'id' of non-nullable...`
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