Dear all, 

I recently encountered a problem with my entity framework, I tried to update my database with it, but unfortunately it gives me the 

"The property 'ID' is part of the object's key information and cannot be modified" 

error, but somehow when I tried to create a new project from the same database and the same entity, it works. 

please advise what should I do? I cannot regenerate entire project. It will take Months!