Re: [Firebird-net-provider] EF - last inserted ID is 0

[Mr. J. <mr_...@ya...>]

Hi.Thanks Paul for your answerFor my first code I've followed this: https://stackoverflow.com/questions/4068084/how-to-find-an-identity-of-the-last-inserted-row-in-entity-frameworkand that seems not to apply to FB?I so I can insert ID without trigger,directly from my code,something like this:
  myTableEnt   newRec= new myTableEnt()                {  ID= GetNextSequenceValue(ref db, "SELECT NEXT VALUE FOR GEN_MYTABLE_ID FROM RDB$DATABASE")                    NAME='MYNAME',                    ....                 };
...public long GetNextSequenceValue(ref myEnt ctx, string sql)        {             var rawQuery = ctx.Database.SqlQuery<long>(sql);            var task = rawQuery.SingleAsync();            long nextVal = task.Result;            return nextVal;        }

thanks


From: paul.mercea <pau...@al...>To: For users and developers of the Firebird .NET providers <fir...@li...>Cc: Mr. John <mr_...@ya...>Sent: Friday, August 25, 2017, 11:35:11 PM GMT+3Subject: Re: [Firebird-net-provider] EF - last inserted ID is 0
The trigger from you database has nothing to do with your c# code.You can use a stored procedure to insert data and returning latest id (also you can read current sequence value but you can have wrong value if other inserts happening).


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-------- Original message --------From: "Mr. John via Firebird-net-provider" <fir...@li...> Date: 8/25/17 20:28 (GMT+02:00) To: "For Users and Developers of the Firebird .NET Providers" <fir...@li...> Cc: "Mr. John" <mr_...@ya...> Subject: [Firebird-net-provider] EF - last inserted ID is 0 
HiI'm using FB 2.5,EF Firebird 5.9.1,Asp MVC 5 with VS 2017
 on a table I have a trigger to generate ID:
   CREATE OR ALTER TRIGGER TRIG_MYTABLE_BI FOR MYTABLE                      ACTIVE BEFORE INSERT POSITION 0                      AS                      BEGIN                        IF ((NEW.ID IS NULL) OR (NEW.ID=0)) THEN                         NEW.ID=NEXT VALUE FOR GEN_MYTABLE_ID;                      END

in my code I insert data like this:
           myTableEnt   newRec= new myTableEnt()                {                    NAME='MYNAME',                    ....                 };

                db.myTableEnt.Add(newRec);                db.SaveChanges();                return ToJson(new { msg = newRec.ID.ToString() });
 newRec.ID is returned always 0,but in database value is generatedwhat I've done wrongthanks