Entity Framework execute stored procedure in a loop

Question

I am trying to loop through a list and execute a stored procedure on every item in the list.

foreach(value in values) {
    Context.Database
        .ExecuteSqlCommand(
            "sp_ProcedureName @value1, @value2, @value3",
            new SqlParameter("@value1", value.value1.ToString()),
            new SqlParameter("@value2", value.value2.ToString()),
            new SqlParameter("@value3", value.value3.ToString()));
}

I keep getting the following error:

New transaction is not allowed because there are other threads running in the session.

I tried to use the async method as well. But that didn't seem to work. Is there something I am missing. Or is it not possible to run a stored procedure inside a loop?

Answer 1

Perhaps the db call to populate values has opened a transaction, stopping the inside call functioning.

Try using .ToList() in the call that populates values to preload all of the values first.

Answer 2

It could be better to create new Context instance for per execution;

            foreach (value in values)
            {
                using (var yourContext = new YourDbContext())
                {
                    yourContext.Database
                        .ExecuteSqlCommand(
                            "sp_ProcedureName @value1, @value2, @value3",
                            new SqlParameter("@value1", value.value1.ToString()),
                            new SqlParameter("@value2", value.value2.ToString()),
                            new SqlParameter("@value3", value.value3.ToString()));
                }
            }