We are using an MVC application. Use of Entity Framework is prevalent. When I am adding a table from the database to the model during an update. I just received an exception that reads,
"When trying to update from the database, a System.ArgumentException event of type occurred. "An entry with the same key already exists," reads the exception message."
I cannot determine the source of the issue. Please provide me a solution to the issue.
I had exactly what you did. You likely have two nodes that are identical:
. Remove one, and everything will work out.