asp.net 4.0项目服务器标记格式不正确的编译错误

Question

I have upgraded projects to .net framework 4.0 (VS 2010) and I am getting lots of "The server tag is not well formed".

for example, validationgroup="Check has missing closing double quot.
ValidationExpression="[^\\"\\'] " -- I had to convert that to ValidationExpression="[^& quot ; '] " to make it work.

We have many dozens of web projects and I can go through each of this and correct those things. This was working fine with VS 2008 (framework 2.0) so I was wondering is there any settings to turn off this kind of validation when compiling the project?

I have tried turning off HTML Validation (Tools -> Options -> Text Editor -> HTML -> Unchecked show errors) even though it shows me those error.

Any help would be appreciated.

Answer 1

The page parser became stricter in ASP.NET 4.0. You can review details of this and other "breaking changes" that occurred in the newest version on the ASP.NET 4 Breaking Changes page.