对象引用未设置为Visual Studio 2013上的对象错误的实例

Question

I am getting this error pop up box in Visual Studio 2013 Pro version. I get it if i paste something onto a .cshtml page while running the project. Currently I am getting it on an MVC 5 project. I am just wondering it is a bug to Visual Studio 2013 or I just messed up my Visual Studio. My VS is genuine version. I also have 2010, 2012 and 2013 Express installed on my machine.

UPDATE:

I found out it happens when I have Razor syntax in the CSS block.

Answer 1

I had a similar problem. I just restarted visual studio, and then it worked!

Answer 2

I have the exact same issue. Everything worked well until i used @Url.Content(...) in element in cshtml. Syntax highlighting also disappeared for the whole element (everything is just black). Removed the lines with @Url.Content(...) and pasting & syntax highlighting worked again in the moment the last line was removed. Also, when i re-paste one @... line, syntax highlighting stops again, pasting shows the error message. Another strange issue: Undo/redo system is stopped. I don't know if this is because of the error above killed it, but it does not work now (even when no @... things are there).

Answer 3

It might be related to a code editor, which is being used for the current file. Try right clicking the file in Solution explorer and select Open with and then select the desired code editor. See if that helps, also you may want to make it default one. It helped for me with the same problem but on .cs files.

Answer 4

This thread is pretty old, but sharing valuable information is always good. I was facing same issue and solved it accidentally.

Normally i open project from VS recent projects, but accidentally i opened it via solution file(. sln ) and copy-paste was started working as expected (i realized this after some-time).