CODEWITHSUNDEEP
asp.net-mvcentity-framework
fligant
fligant

Reputation: 732

System.Data.Entity.DataBase can't be found

I can't find DataBase in System.Data.Entity.

Any one know why?

Thank you.

Upvotes: 18

Views: 16678

Answers (6)

NOUFAL MUNDODAN
NOUFAL MUNDODAN

Reputation: 1

Just update your Entity Framework to do that just right click on the solution and select "Manage NuGet Package" and search with "EntityFramework". install latest version ( 6.1.3 or ) or use " NuGet package console" enter image description here

Upvotes: 0

Bill
Bill

Reputation: 1

On my version, Entity Framework 4.1.10715.0', System.Data.Entity.Database is a namespace and not a class. DbDatabase IS a class in that namespace and it contains the SeInitializer method. What a PITA to find when everything I've read contradicts this.

I had to use the following to get the Steven Sanderson demo to remake my database.

System.Data.Entity.Database.DbDatabase.SetInitializer(
    new System.Data.Entity.Database.DropCreateDatabaseIfModelChanges<Mvc3ScaffoldDemo.Models.Mvc3ScaffoldDemoContext>());

Upvotes: 0

grenade
grenade

Reputation: 32179

At a guess, you upgraded from Enterprise Library 4 CTP5 to Enterprise Library 4.1.

The namespaces changed a little and you will now find the classes you need in different namespaces. As shown in Kasper Skov's answer here, the DbDatabase class is now in System.Data.Entity and is renamed to Database.

I haven't yet worked out where IConfigurationConvention has moved to as System.Data.Entity.ModelConfiguration.Conventions.Configuration is another defunct namespace.

Upvotes: 1

Eric Fan
Eric Fan

Reputation: 147

I have same problem. Daz and Darin's answer gave me some clues.

In CTP, the class name is called "DbDatabase" in namespace System.Data.Entity.Database.

But in my version which is EF 4.1, the class is called "Database" and is in System.Data.Entity. System.Data.Entity.Database namespace is gone at least in EF4.1

Upvotes: 3

Kasper Skov
Kasper Skov

Reputation: 2014

You dont have to import System.Data.Entity.Database. The System.Data.Entity is enough. Use Database.SetInitializer instead of DbDatabase.SetInitializer.

If you missed it it, the class is called Database without "Db"

Upvotes: 22

Darin Dimitrov
Darin Dimitrov

Reputation: 1038930

You need to reference the EntityFramework.dll assembly which is where the Database class is declared. You could install it from the corresponding NuGet package.

Upvotes: 8

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