创建对象引用未设置为对象实例时出错 [英] Error Creating Object refrence not set to an instance of an object

问题描述

asp.net 4.0中的所有控件在设计时出错(错误创建对象引用未设置为对象实例).在浏览器中运行时没有问题.请帮助我解决此问题的任何人

All the controls in the asp.net 4.0 make error in design time(Error Creating Object refrence not set to an instance of an object).While running in browser no problem.Please help me anybody to solve this issue

推荐答案

似乎是一个已知的错误
^ ]

Seems like a known bug
http://blogs.msdn.com/b/webdevtools/archive/2010/05/06/another-error-creating-control-in-the-design-view-with-object-reference-not-set-in-visual-studio-2010.aspx[^]
http://blogs.msdn.com/b/webdevtools/archive/2010/04/15/rendering-issue-in-visual-studio-2010-when-accessing-the-session-state-in-the-oninit-method.aspx[^]

A simple workaround for this issue would be to check if we are in the design mode at the top of the OnInit() method, below the base.OnInit() call.

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