Why is EF trying to insert NULL in id-column?

Question

I am writing my project using Entity Framework 4.0 (Model first). At the beginning of the project, I faced with this problem: I am trying to insert the filled object in the

Answer 1

0

İf you dont use code first or db first oracle dont create be sequnce You try it trigger with sequence

     CREATE OR REPLACE TRIGGER 
"a"."IHALEYOL"
before insert on "a"."IHALEYOL"
for each row
begin
  select "a"."SQ_DIREK".nextval into :new."ID" from dual;
end;

seq:

 create sequence SQ_YETKI
minvalue 1
maxvalue 9999999999999999999999999999
start with 221
increment by 1
cache 20;