How to make Entity Framework CTP5 work with SQLite?

问题:

I am having a very hard time in using the SQLite db with EF CTP5. I was just trying to execute this MSDN example with SQLite. But at the line

var food = db.Categories.Find("FOOD"); 

I am getting a runtime exception:

System.Data.SQLite.SQLiteException (0x80004005): SQLite errorno such table: Categories

Note: The app.config file has to be modified and is as follows:

App.config

<configuration>   <startup useLegacyV2RuntimeActivationPolicy="true">     <supportedRuntime version="v4.0" />   </startup>   <runtime>     <generatePublisherEvidence enabled="false" />   </runtime>   <system.data>     <DbProviderFactories>       <remove invariant="System.Data.SQLite"/>       <add name="SQLite Data Provider" invariant="System.Data.SQLite"            description=".Net Framework Data Provider for SQLite"            type="System.Data.SQLite.SQLiteFactory, System.Data.SQLite, Version=1.0.66.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139" />     </DbProviderFactories>   </system.data>   <connectionStrings>     <add name="ProductContext" connectionString="Data Source=D:\CodeFirst.db;Version=3;New=True;" providerName="System.Data.SQLite" />   </connectionStrings> </configuration> 

回答1:

It seems to me that current SQLite.net does not support Entity Framework CTP5 code first. Will have to wait for that to happen.

回答2:

System.Data.SQLite does not provide CreateDatabase() and DeleteDataase() dynamic database creation at the moment. At least, this forum post is unanswered for approximately a month.
We already offer both dynamic database creation and CTP 5 support, and plan to blog about CTP 5 support in dotConnect for SQLite soon.
UPDATE. The CTP 5 article is available. It contains some notes concerning database creation peculiarities, and a sample illustrating CTP 5 usage.

回答3:

you can see this:

http://www.devart.com/blogs/dotconnect/index.php/entity-framework-code-first-support-for-oracle-mysql-postgresql-and-sqlite.html

回答4:

Adding

Database.SetInitializer<MyDataContext>(null); 

works for me. I use EF5 code first with Sqlite

文章来源: How to make Entity Framework CTP5 work with SQLite?