The Simple Answer To VS.NET Designer Woe
It’s happened to all of us. You are happily coding along (in Visual Studio .NET 1.x), minding your own business when you decide to switch from the code view to the designer and back to the code view. That’s when you experience...The Woe.
Now to prevent the woe, this post has some great tips.
However, I discovered something quite by accident, and I’m not sure if it works in all cases. But I was working on an ASPX page and switched to design mode and then switched back and noticed that the HTML was completely messed up. Various tags had been upper-cased (for god knows what reason) and my indenting was kicked in the nuts.
So I hit
It appears that VS.NET took two steps to fubar my code, but both steps were still in the command stack. So undoing twice restored my ASPX markup to its beautiful pristine state.