sql server - An issue on the setting of [DatabaseGenerated(DatabaseGeneratedOption.Identity)] -

sql server - An issue on the setting of [DatabaseGenerated(DatabaseGeneratedOption.Identity)] -

i used ef 6 code-first approach in codes existing database(mssql server 2014), , set [databasegenerated(databasegeneratedoption.identity)] attribute id (int type) of entity. each time, invokes exception message main key(id of entity) can't null when insert operation executes.

i can't figure out what's what's problem databasegenerated attribute .

sql-server entity-framework