asp.net-mvc-3 – MVC3值不能为null 参数名称：值

发布时间：2020-12-15 19:01:34 所属栏目：asp.Net 来源：网络整理

导读：我试图加载用户的数据编辑它，然后保存。这已经工作，我不太确定我改变了，但现在我得到以下错误… Value cannot be null.Parameter name: valueDescription: An unhandled exception occurred during the execution of the current web request. Please rev

我试图加载用户的数据编辑它，然后保存。这已经工作，我不太确定我改变了，但现在我得到以下错误…

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)
        {

我甚至没有达到ModelState.IsValid当我点击提交

解决方法

你更改了任何名字吗？表单名称必须与您的Action参数映射1-1。在这种情况下，“name”参数未传递到控制器操作，因此它为null。

野生猜测，需要更多的信息(动作的方法签名)

（编辑：李大同）

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