不包含定义，并且没有可以找到接受类型的第一个参数的扩展方法（您是否缺少using指令或引用？） [英] Does not contain a definition for and no extension method accepting a first argument of type could be found(are you missing a using directive or an reference? )

问题描述

I have been working developing as asp.net application. Have there hundreds of pages.
I have never been through such error.
i am getting the same error in all the pages of any folders of my application.
when ever i try to add any button with underlying code for the button. it says ::::




does not contain a definition for and no extension method accepting a first argument of type could be found(are you missing a using directive or an reference?)

我尝试过：

What I have tried:

have written the underlying  code the button event properly.
I am an asp.net developer since 5 years.

推荐答案

Quote：

我在我的应用程序的任何文件夹的所有页面中都收到相同的错误。

当我尝试添加任何带有按钮的基础代码的按钮时。它说::::

i am getting the same error in all the pages of any folders of my application.
when ever i try to add any button with underlying code for the button. it says ::::

那是因为你在你的密码中犯了一个秘密错误。不幸的是，我们现在暂时不会阅读药水。

介于两者之间，你应该学会正确提问：

提出问题是一项技能 [ ^ ]

在论坛中发布问题的一些指导方针 [ ^ ]

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