dictionary requires a model item of type.

Question

4.00/5 (1 vote)

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The model item passed into the dictionary is of type 'System.Data.Objects.ObjectQuery`1[MvcApplication43.Utilisateurs]', but this dictionary requires a model item of type...

this is the view's code:

C#

@model MvcApplication43.Utilisateurs
@{
    ViewBag.Title = "SearchIndex";
}

<h2>SearchIndex</h2>
 @using( Html.BeginForm("SearchIndex","Users",FormMethod.Get)){
   <p> 
       Initial:@Html.TextBox("SearchString")  
  <input type="submit" value="Chercher" /></p>
  }

controller's codes:

C#

public ActionResult SearchIndex(string ByInitial , string SearchString)
           {
               var initialList = new List<string>();
               var query = from d in _db.Utilisateurs orderby d.Initial select d.Initial;
               initialList.AddRange(query.Distinct());
               ViewBag.ByInitial=new SelectList(initialList);


               var Utilisateur = from u in _db.Utilisateurs select u;
               if (!String.IsNullOrEmpty(SearchString))
               {
                   Utilisateur = Utilisateur.Where(s => s.Initial.Contains(SearchString));

               }
                if

                (string.IsNullOrEmpty(ByInitial))
                    return View(Utilisateur);
                else
                {

                    return View(Utilisateur.Where(x => x.Initial == ByInitial));
                }

           }

and this is the exception:

XML

The model item passed into the dictionary is of type 'System.Data.Objects.ObjectQuery`1[MvcApplication43.Utilisateurs]', but this dictionary requires a model item of type 'MvcApplication43.Utilisateurs'.
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.InvalidOperationException: The model item passed into the dictionary is of type 'System.Data.Objects.ObjectQuery`1[MvcApplication43.Utilisateurs]', but this dictionary requires a model item of type 'MvcApplication43.Utilisateurs'.

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:

[InvalidOperationException: The model item passed into the dictionary is of type 'System.Data.Objects.ObjectQuery`1[MvcApplication43.Utilisateurs]', but this dictionary requires a model item of type 'MvcApplication43.Utilisateurs'.]
   System.Web.Mvc.ViewDataDictionary`1.SetModel(Object value) +399739
   System.Web.Mvc.ViewDataDictionary..ctor(ViewDataDictionary dictionary) +377
   System.Web.Mvc.WebViewPage`1.SetViewData(ViewDataDictionary viewData) +48
   System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +98
   System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +115
   System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +303
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +13
   System.Web.Mvc.<>c__DisplayClass1a.<InvokeActionResultWithFilters>b__17() +23
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +260
   System.Web.Mvc.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19() +19
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +177
   System.Web.Mvc.Async.<>c__DisplayClass2a.<BeginInvokeAction>b__20() +92
   System.Web.Mvc.Async.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult) +126
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +57
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +45
   System.Web.Mvc.<>c__DisplayClass1d.<BeginExecuteCore>b__18(IAsyncResult asyncResult) +14
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +25
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +61
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +25
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +49
   System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
   System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__3(IAsyncResult asyncResult) +28
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +25
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +49
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8862381
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184

Posted 8-Jan-13 7:26am

medloyl1

Updated 9-Jan-13 3:47am

Sandeep Mewara

v2

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**Zoltán Zörgő** · Answer 1 · 2013-01-08T07:32:00

Solution 1

Your model defined on the view is of only one element. But the object you pass to the view is a result of a query that can have zero or more elements as result.
So you either set the model to @model IEnumerable<MvcApplication43.Utilisateurs>, or use SindleOrDefault or First instead of Where. But it depends on what you want to achieve.

Posted 8-Jan-13 7:32am

Zoltán Zörgő

Updated 9-Jan-13 2:20am

v2

Comments

medloyl1 8-Jan-13 13:34pm

explain more plz!!!

Zoltán Zörgő 8-Jan-13 13:35pm

I can not explain it more. You pass an enumeration of entities to the view, the view is created to accept a single entity only.

medloyl1 9-Jan-13 6:45am

i try it but nothing has changed

Zoltán Zörgő 9-Jan-13 7:17am

What exactly have you tried? Let's take slow and easy:
1) What is MvcApplication43.Utilisateurs? Paste it's declaration here.

medloyl1 9-Jan-13 7:37am

I want to display data in a table from the user table with a text field that allow me to search users 'ByInitial' from this list

Zoltán Zörgő 9-Jan-13 7:54am

Good for you - this can be achieved in many ways. But I can't help you in what you want, only in finding the cause of your error. Please answer to my question above.

medloyl1 9-Jan-13 8:10am

public ObjectSet<utilisateurs> Utilisateurs
{
get
{
if ((_Utilisateurs == null))
{
_Utilisateurs = base.CreateObjectSet<utilisateurs>("Utilisateurs");
}
return _Utilisateurs;
}
}
private ObjectSet<utilisateurs> _Utilisateurs;

#endregion
#region AddTo Methods

///

/// Deprecated Method for adding a new object to the Utilisateurs EntitySet. Consider using the .Add method of the associated ObjectSet<T> property instead.
///

public void AddToUtilisateurs(Utilisateurs utilisateurs)
{
base.AddObject("Utilisateurs", utilisateurs);
}

Zoltán Zörgő 9-Jan-13 8:19am

Ok. This is not a good model, but that's not the problem. One big problem is, that you use the same name for two different things: you have MvcApplication43.Utilisateurs and you have var Utilisateur = from u in _db.Utilisateurs select u;. Now, let's hope, that _db.Utilisateurs is a collection of MvcApplication43.Utilisateurs. This way var Utilisateur will be also an IEnumerable of that type. And after those where clauses you will still have that enumeration. But your view model is a single element not an enumeration. Use @model IEnumerable<MvcApplication43.Utilisateurs>. But since you will get an enumeration, you will have to make your view process an enumeration.

medloyl1 9-Jan-13 8:30am

so i have just to put @model IEnumerable<mvcapplication43.utilisateurs> in the view??

Zoltán Zörgő 9-Jan-13 9:45am

Should be enough if there are no other problems.