How to disable migration in Entity Framework 4.3.1?

Question

Is there any way to disable migration in Entity Framework 4.3.1? I removed the migrations folder from the project and the generated tables in my database, but it doesn't work! How can you remove the migration?

I mean when I delete these file and table, I ecpect to migration disabled, but it is enable yet. when I run the project it occurs an error about migration — amiry jd, Mar 14 '12 at 14:27
Try to add `Database.SetInitializer(null)` to startup of your application. — Ladislav Mrnka, Mar 14 '12 at 14:29
It works. Thank you. But now, how can I create database with ef? — amiry jd, Mar 14 '12 at 18:53
For EF6 see [How can I disable migration in Entity Framework 6.0](http://stackoverflow.com/q/18667172) — Michael Freidgeim, Sep 07 '16 at 02:26

score 39 · Accepted Answer · edited Nov 03 '14 at 20:20

39

If you don't want to use migrations but in the same time you want EF to create database for you, you just need to set correct database initializer:

Database.SetInitializer<YourContextType>(new CreateDatabaseIfNotExists<YourContentType>());

edited Nov 03 '14 at 20:20

OneHoopyFrood

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answered Mar 14 '12 at 20:03

Ladislav Mrnka

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new CreateDatabaseIfNotExists() – njebert Sep 09 '12 at 02:24
2

What class/file does this actually go in? – jep Jan 22 '14 at 17:04
1

@jep, the entry point for your application. E.g. `global.asax.cs` or `Program.Main`. – MEMark Mar 04 '14 at 18:18
4

This does not work in EF6. MSFT turned it off because of conflicts between the migration and the intitializers. See http://entityframework.codeplex.com/workitem/1689 – Alex Edelstein Mar 27 '14 at 23:25
How to make it ALWAYS rebuild from scratch even if there was no changes? I tried many things to do so. – Yoda Jul 28 '14 at 19:03
In aspnet.core 2.0 I get the error: 'DatabaseFacade' does not contain a defininition for 'SetInitializer'. – alexb Sep 13 '17 at 23:38

score 35 · Answer 2 · edited Mar 17 '14 at 23:16

35

Deleting the Migrations folder has worked for me. I don't get any errors, it puts me back to where I started.

edited Mar 17 '14 at 23:16

Nick Spreitzer

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answered Dec 21 '13 at 17:49

Noel

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The Migrations folder where? I'm EF6 code-first and don't seem to have one anywhere. I certainly didn't make one. – Alastair Maw Oct 31 '16 at 11:49

score 3 · Answer 3 · edited Apr 16 '18 at 11:31

3

The way that I got around this was to make sure that I turned off Automatic Migrations in my code:

internal sealed class Configuration : DbMigrationsConfiguration<YourContext>
{
    public Configuration()
    {
        AutomaticMigrationsEnabled = false;
    }
}

and then I deleted the _MigrationHistory table from the database (this is usually created as a system table if you can't find it)

edited Apr 16 '18 at 11:31

CyberFox

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answered Mar 13 '13 at 03:40

Buzzrick

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Down vote for being so vague. Where exactly in your code did you include that command? – JBeckton Oct 06 '13 at 03:12
hmmm... good question JBeckton. it's been a while since I've looked at that code, and I don't think that I still have access to it anywhere. I remember that it was in the Entity Framework setup section of my code. Not very helpful, I know, so my apologies on that. – Buzzrick Oct 07 '13 at 01:26
10

`AutomaticMigrationsEnabled` property is located in /Migrations/Configuration.cs – Joseph Woodward Oct 27 '13 at 02:04

How to disable migration in Entity Framework 4.3.1?

3 Answers3

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