The value of MVC3 cannot be null. name of parameter: value

asp.net-mvc-3 entity-framework

Question

I'm attempting to load user-provided data, change it, and then save it. I'm not sure what I changed, but this was working before, and now I'm receiving the following issue.

Value cannot be null.
Parameter name: value

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.ArgumentNullException: Value cannot be null.
Parameter name: value

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace: 


[ArgumentNullException: Value cannot be null.
Parameter name: value]
   System.ComponentModel.DataAnnotations.ValidationContext.set_DisplayName(String value) +51903
   System.Web.Mvc.<Validate>d__1.MoveNext() +135
   System.Web.Mvc.<Validate>d__5.MoveNext() +318
   System.Web.Mvc.DefaultModelBinder.OnModelUpdated(ControllerContext controllerContext, ModelBindingContext bindingContext) +139
   System.Web.Mvc.DefaultModelBinder.BindComplexElementalModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Object model) +66
   System.Web.Mvc.DefaultModelBinder.BindComplexModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +1367
   System.Web.Mvc.DefaultModelBinder.BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +449
   System.Web.Mvc.ControllerActionInvoker.GetParameterValue(ControllerContext controllerContext, ParameterDescriptor parameterDescriptor) +317
   System.Web.Mvc.ControllerActionInvoker.GetParameterValues(ControllerContext controllerContext, ActionDescriptor actionDescriptor) +117
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +343
   System.Web.Mvc.Controller.ExecuteCore() +116
   System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +97
   System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +10
   System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +37
   System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +21
   System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +12
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
   System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +50
   System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +7
   System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +22
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +60
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8897857
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184


     public ActionResult EditDetails()
    {
        int id = Convert.ToInt32(Session["user"]);
        S1_Customers u1_users = storeDB.S1_Customers.Find(id);
        return View(u1_users);
    }

    [HttpPost]
    public ActionResult EditDetails(S1_Customers u1_users)
    {
        var Pcode = "";  
        if (ModelState.IsValid)
        {

I have yet to enter ModelState. When I hit "Submit," is it valid?

1
29
9/21/2011 1:07:09 PM

Accepted Answer

Have you adopted any new names? The names of the forms must match your Action parameters exactly 1 to 1. The "name" argument is null in this instance since it was not supplied to the controller action.

Uncertainty, need more details (method signature of action)

26
9/21/2011 1:10:54 PM

Popular Answer

If you have DisplayAttribute-decorated properties with empty Names, you'll get that error.([DisplayAttribute(Name = "", Description = "Any description")])



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