c# - Identity Column not being modified by Entity framework -


the relevant entity follows:

public class fieldbookingdaterange : itimestamps, icreatedby, isoftdeletable {     [key, databasegenerated( databasegeneratedoption.none )]     public int fieldbookingdaterangeid { get; set; }      [required]     public virtual fieldbooking fieldbooking { get; set; }      public virtual daterange daterange { get; set; }      .... }

i have database column set identity: true.

if run following auto generated migration on (this should setting column false on identity):

public partial class removeddbgen_fieldbookingdaterange : dbmigration {     public override void up()     {         dropindex("dbo.fieldbookingdateranges", new[] { "fieldbookingdaterangeid" });         dropprimarykey("dbo.fieldbookingdateranges");         altercolumn("dbo.fieldbookingdateranges", "fieldbookingdaterangeid", c => c.int(nullable: false, identity: false));         addprimarykey("dbo.fieldbookingdateranges", "fieldbookingdaterangeid");         createindex("dbo.fieldbookingdateranges", "fieldbookingdaterangeid");     }      public override void down()     {         dropindex("dbo.fieldbookingdateranges", new[] { "fieldbookingdaterangeid" });         dropprimarykey("dbo.fieldbookingdateranges");         altercolumn("dbo.fieldbookingdateranges", "fieldbookingdaterangeid", c => c.int(nullable: false, identity: true));         addprimarykey("dbo.fieldbookingdateranges", "fieldbookingdaterangeid");         createindex("dbo.fieldbookingdateranges", "fieldbookingdaterangeid");     } }

it doesn't anything... doesn't fail.

any ideas why isn't working?

sql -verbose output

if exists (     select name sys.indexes               name = n'ix_fieldbookingdaterangeid' ,          object_id = object_id(n'[dbo].[fieldbookingdateranges]', n'u') ) drop index [ix_fieldbookingdaterangeid] on [dbo].[fieldbookingdateranges] alter table [dbo].[fieldbookingdateranges] drop constraint [pk_dbo.fieldbookingdateranges] alter table [dbo].[fieldbookingdateranges] alter column [fieldbookingdaterangeid] [int] not null alter table [dbo].[fieldbookingdateranges] add constraint [pk_dbo.fieldbookingdateranges] primary key ([fieldbookingdaterangeid]) create index [ix_fieldbookingdaterangeid] on [dbo].[fieldbookingdateranges]([fieldbookingdaterangeid])

i think can't remove identity property column once it's set. might able modify automatically generated migration implement workaround.

you can find examples here:


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