late-bound stored procedure execution with Entity Framework

Question

I'm looking for a way to do something like this:

var  db = new DALEntities();
db.StoredProcedureToCall();

but, I want it to be dynamic, in that I won't know WHICH call to make until after some other data is delivered to me.

var db = new DALEntities();
db[tSproc]();

I know I could have a switch statement test the value of tSproc, and then call as above, but is there a more elegant way?

Thanks

Answer 1

Put your cursor on db.StoredProcedureToCall() and press F12. You'll see the code that EF generated is already dynamic.

Depending on the EF version you use, it will look something like:

public ObjectResult<OrderDetail> GetDetailsForOrder
 (Nullable<global::System.Int32> orderid)
{
  ObjectParameter orderidParameter;
  if (orderid.HasValue)
  {
    orderidParameter = new ObjectParameter("orderid", orderid);
  }
  else
  {
    orderidParameter = new ObjectParameter("orderid", typeof(global::System.Int32));
  }
  return base.ExecuteFunction<OrderDetail>("GetDetailsForOrder", orderidParameter);
}

Just write your code similarly. You don't need a switch.