Force clause on Entity Framework Where

Question

I have to make my app indepotent . In order to make my updates so, I implemented in my entities a timestamp field, because if a given operation happens to be executed twice the "where id=10 and timestamp=0x008787" will match zero results and nothing will be updated in the database.

The thing is: how can i make the EF include the "extra clause"? because so far the underlying query is always "where id=10"

Answer 1

In code-first you can place a [ConcurrencyCheck] attribute on a property to include it in the WHERE clause.

For keys this is implied, as well as for special TimeStamp properties. Not clear where your property fits in.