Entity Framework: “Store update, insert, or delete statement affected an unexpected number of rows (0).” [closed]

Answer 1

I had the same problem, I figure out that was caused by the RowVersion which was null. Check that your Id and your RowVersion are not null.

for more information refer to this tutorial

http://www.asp.net/mvc/tutorials/getting-started-with-ef-using-mvc/handling-concurrency-with-the-entity-framework-in-an-asp-net-mvc-application