c# - 查看包 RuntimeBinderException : 'object' does not contain a definition

Question

如何通过 ViewBag 将数据传递给 View 来解决这个错误？

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'

在 Controller 中

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;
       

在 View 中

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

Answer 1

修复此错误的最简单方法是创建一个类而不是使用匿名对象并使用强类型模型。

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;

在 View 中:

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

如果你坚持使用dynamic，你可以看看这些问题:

Dynamic Anonymous type in Razor causes RuntimeBinderException

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