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When this error occurs ?
Posted: Fri 27 Sep 2013 08:22
by puvinax
{"The 'Instance' member of the Entity Framework provider type 'Devart.Data.SQLite.Entity.SQLiteEntityProviderServices, Devart.Data.SQLite.Entity, Version=4.6.333.0, Culture=neutral, PublicKeyToken=09af7300eec23701' did not return an object that inherits from 'System.Data.Entity.Core.Common.DbProviderServices'. Entity Framework providers must inherit from this class and the 'Instance' member must return the singleton instance of the provider. This may be because the provider does not support Entity Framework 6 or later; see
http://go.microsoft.com/fwlink/?LinkId=260882 for more information."}
Hi
I uninstalled previous version of Devart.Data.SQLite 4.6.287.0 then installed new version 4.6.333.0 so machin.config updated by installer.
I changed app.config Version Section to 4.6.333.0
Code: Select all
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework,
Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<entityFramework>
<providers>
<provider invariantName="Devart.Data.SQLite" type="Devart.Data.SQLite.Entity.SQLiteEntityProviderServices, Devart.Data.SQLite.Entity, Version=4.6.333.0, Culture=neutral, PublicKeyToken=09af7300eec23701" />
</providers>
</entityFramework>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
</configuration>
and added new dlls
but when run my sample above error occures
How resolve this problem ?
Re: When this error occurs ?
Posted: Fri 27 Sep 2013 09:04
by Shalex
Please change the version in your app.config: 4.6.333.0 -> 4.6.333.6.
Re: When this error occurs ?
Posted: Fri 27 Sep 2013 09:31
by puvinax
that`s right, Thank you so much
Re: When this error occurs ?
Posted: Tue 17 Jun 2014 14:24
by tmc
I am getting the same thing. However Mine is {"The 'Instance' member of the Entity Framework provider type 'Devart.Data.Oracle.Entity.OracleEntityProviderServices, Devart.Data.Oracle.Entity, Version=8.4.181.0, Culture=neutral, PublicKeyToken=09af7300eec23701' did not return an object that inherits from 'System.Data.Entity.Core.Common.DbProviderServices'. Entity Framework providers must inherit from this class and the 'Instance' member must return the singleton instance of the provider. This may be because the provider does not support Entity Framework 6 or later; see
http://go.microsoft.com/fwlink/?LinkId=260882 for more information."}
As I use Devart.Data.Oracle.
I have updated my web.config to 8.4.181.0 as it was previously 8.1.65.0 but this doesn't make any difference.
PS I searched web.config for all references to Devart.Data.Oracle and changed all 3 versions to the current version but no luck.
Any ideas?
Re: When this error occurs ?
Posted: Wed 18 Jun 2014 07:38
by Shalex
Here is an example of provider registration:
Code: Select all
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<entityFramework>
<providers>
<provider invariantName="Devart.Data.Oracle" type="Devart.Data.Oracle.Entity.OracleEntityProviderServices, Devart.Data.Oracle.Entity, Version=8.4.181.6, Culture=neutral, PublicKeyToken=09af7300eec23701" />
</providers>
</entityFramework>
<system.data>
<DbProviderFactories>
<remove invariant="Devart.Data.Oracle" />
<add name="dotConnect for Oracle" invariant="Devart.Data.Oracle" description="Devart dotConnect for Oracle" type="Devart.Data.Oracle.OracleProviderFactory, Devart.Data.Oracle, Version=8.4.181.0, Culture=neutral, PublicKeyToken=09af7300eec23701" />
</DbProviderFactories>
</system.data>
</configuration>
Replace 8.4.181 here with your current version of dotConnect for Oracle. Please note that the revision number of provider in the entityFramework section is *.6 but in DbProviderFactories - *.0.
We recommend you to use Entity Developer (Devart Entity Model, *.edml) instead of EDM Designer (ADO.NET Entity Data Model, *.edmx) because it is adjusted for working with Oracle and has an advanced functionality:
http://www.devart.com/entitydeveloper/ed-vs-edm.html. Additionally, Entity Developer adds registration of EF6-provider in app.config automatically.
Re: When this error occurs ?
Posted: Wed 18 Jun 2014 08:39
by tmc
{As if you didn't know it would...}
That's fixed it. Thanks a million!
On to the next problem now - but that's not a Devart issue
