“There is no editor available for” Can't open .cs

Question

My computer shut down while working on a project and when I opened C# again and recovered it, I got an error saying

There is no editor available \'for

Answer 1

I had the same problem with a .cs file in Visual Studio 2017 after a crash. My solution was as follow:
Go to the corrupted file in Explorer. In my case the corrupted Form1.cs contained only NULL values due to the crash (you can test this by opening in Notepad++ for example). Just backup or delete this file. In my case there was also a backup file in the same folder named like Form1.cs~string.TMP. Rename this to Form1.cs and reopen your project and double click on the Form1.cs and it will open successfully.