不包含定义 [英] Does not contain a definition

问题描述

大家好，

我有一个空的ASP.net MVC 3应用程序，我使用数据库优先"方法创建了它.

在该数据库中，我有两个带有某些字段的表，它们的名称分别是User和Organization.

现在在模型中，

我创建了三个类，即Login，User，Organization，对于Login类，我在数据库中没有任何表
我用与数据库表中相同的名称声明了变量User和Organization类...

现在，我想在Login类中使用用户和组织变量，并为此将它们声明为Vitual.

后来我添加了控制器和dropdownlist视图包，并查看并运行了它，并提示错误消息如下..

``System.Collections.Generic.IEnumerable< emvc_css.models.modelclasses.user_details_class>''不包含``UName''的定义，也没有扩展方法``UName''接受类型为``System''的第一个参数.可以找到Collections.Generic.IEnumerable< emvc_css.models.modelclasses.user_details_class>''(您是否缺少using指令或程序集引用?)


解决这个问题的任何想法

Hi all,

I have a Empty ASP.net MVC 3 app and i created it by using "Database First" approach.

In that database, i have two tables with some fields and their names are User and Organization.

Now in Model,

i created three classes namely Login, User, Organization, and for Login class i did not have any table in database
and i declared the variables User and Organization classes with same names as that are in database tables...

Now i want to use the user and organization variables into Login class and for that i declared them as Vitual.

later i added the controller and dropdownlist view bag and view and runned it and it is prompting the error message as follows..

''System.Collections.Generic.IEnumerable<emvc_css.models.modelclasses.user_details_class>'' does not contain a definition for ''UName'' and no extension method ''UName'' accepting a first argument of type ''System.Collections.Generic.IEnumerable<emvc_css.models.modelclasses.user_details_class>'' could be found (are you missing a using directive or an assembly reference?)


any idea regading this to solve the problem

推荐答案

在这种情况下通常会提示此错误-

如果要从控制器中的方法传递IEnumerable值，则无法在其相应的视图中捕获它，例如-

@model IEnumerable<您的类型=">
它应该在视图的顶部.

This error usually prompt in this situation-

If you were passing the IEnumerable value from a method in controller then not catching it in its respective view like-

@model IEnumerable<your type="">
it should be on the top of your view.

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