Viewbag RuntimeBinderException：“对象”不包含定义

Question

How can solve this error to pass data to the view by ViewBag ?

An exception of type 'Microsoft.CSharp.RuntimeBinder.RuntimeBinderException' occurred in System.Core.dll but was not handled in user code

Additional information: 'object' does not contain a definition for 'name'

In Controller

var linq = (from c in db.Catogeries
            join a in db.Articals on c.Id equals a.CatogeryId
            select new  {name=c.Name,title=a.Title });
ViewBag.data = linq;

In View

@{         
     foreach (var item in ViewBag.data )
     {
          <p>@item.name</p>
     }
}

Answer 1

The simplest way to fix this error creating a class instead of using anonymous object and use strongly-typed model.

var linq = (from c in db.Catogeries
        join a in db.Articals on c.Id equals a.CatogeryId
        select new MyCategory { name=c.Name, title=a.Title });

ViewBag.data = linq;

In View :

foreach (var item in (IEnumerable<MyCategory>)ViewBag.data )
{
     <p>@item.name</p>
}

If you insist about using dynamic you can take a look at these questions:

Dynamic Anonymous type in Razor causes RuntimeBinderException

Simplest Way To Do Dynamic View Models in ASP.NET MVC 3

Answer 2

The problem is actually caused by setting the Viewbag value. In the process .NET always throws an internal Exception, and then Visual Studio breaks into the debugger.

Solution: make Visual Studio break only for exceptions in your own code. Go to menu Tools/Options, select Debugging on the left, and check [v] the option "Enable Just My Code".

Answer 3

here is how I resolved my issue and I hope this may help someone:

I created a Class:

    public class MyClass
    {
        public decimal EmployeeId { get; set; }
        public string CategoryCode { get; set; }
        public string CategoryDesc { get; set; }
    }
}

At the Controller:

var query = (from c in context.EmployeeCategory
             where(c.EMPLOYEE_ID == 22)
             join a in context.Categories on c.Category_CODE 
             equals a.Category_CODE
             select new MyClass
                         {
                             EmployeeId = c.EMPLOYEE_ID,
                             CategoryCode = a.Category_CODE,
                             CategoryDesc = a.Category_DESC
                         });
return View(query);

At the View:

@model IEnumerable<MyClass>

@foreach (var item in Model)
{
            @item.EmployeeId <b> - </b>
            @item.CategoryCode <br />
            @item.CategoryDesc <br />
}

Answer 4

You just need to cast it. The view doesn't have any idea what type the object is so trying to enumerate it won't work until you cast it. Something like:

foreach (var item in (IEnumerable <dynamic>) ViewBag.data) { ... }

Sorry if format is off slightly, trying to do this on phone.