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POASP.NET MVC 2 problem with UpdateModel
 

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  1. POASP.NET MVC 2 problem with UpdateModel
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    <p>I'm trying to use updatemodel(myItem, formcollection) with asp.net mvc 2 but it fails with the stack trace below.</p> <pre><code> at System.Web.Mvc.FormCollection.GetValue(String name) at System.Web.Mvc.DefaultModelBinder.BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) at System.Web.Mvc.Controller.TryUpdateModel[TModel](TModel model, String prefix, String[] includeProperties, String[] excludeProperties, IValueProvider valueProvider) at System.Web.Mvc.Controller.TryUpdateModel[TModel](TModel model, IValueProvider valueProvider) at Stormbreaker.Dashboard.Controllers.DashboardController`1.Update(FormCollection collection) in D:\Projects\SVN\Stormbreaker\trunk\Stormbreaker.Dashboard\Controllers\DashboardController.cs:line 23 at lambda_method(ExecutionScope , ControllerBase , Object[] ) at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) at System.Web.Mvc.ControllerActionInvoker.&lt;&gt;c__DisplayClassd.&lt;InvokeActionMethodWithFilters&gt;b__a() at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) </code></pre> <p>My action looks like this:</p> <pre><code> [AcceptVerbs(HttpVerbs.Post)] [ValidateInput(false)] public ActionResult Update(FormCollection collection) { UpdateModel(CurrentItem, collection); CurrentItem = (T)_repository.Update(CurrentItem); return RedirectToAction("edit", new { pagePath = CurrentItem.UrlSegment }); } </code></pre> <p>... and my form looks like this:</p> <pre><code>&lt;% using (Html.BeginForm("Update","Dashboard", FormMethod.Post, new { name = "editForm" } )) %&gt; &lt;% { %&gt; &lt;div&gt; &lt;%=Html.EditorForModel() %&gt; &lt;input type="submit" value="Save" /&gt; &lt;/div&gt; &lt;% } %&gt; </code></pre>
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    1. COWhat exception is thrown? NRE?
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    2. COHere is the exception: Value cannot be null or empty. Parameter name: name Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.ArgumentException: Value cannot be null or empty. Parameter name: name
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    3. COPlease post your Model.
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