I'm using Entity Framework 5.0 with MySQL 6.8.3
I've already copy both MySql.Data.dll and MySql.Data.Entity.dll to Output folder.
On my PC, I add following code to App.Config:
<system.data>
<DbProviderFactories>
<remove invariant="MySql.Data.MySqlClient"/>
<add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data"/>
</DbProviderFactories>
</system.data>
It works fine, but when I bring it to another PC, I must remove that config to make it worked. How can I make it worked without adding or removing that config?
I've figured out my problem. This issue was due to conflict of MySQL in project and Connector/Net.
For anyone has the same problem with me, just specific the version of MySQL dll in your provider configuration:
<system.data>
<DbProviderFactories>
<remove invariant="MySql.Data.MySqlClient"/>
<add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.8.3.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d"/>
</DbProviderFactories>
</system.data>
This version should be same as the dll that your project references.
Related
I'm using .NET Framework 4.6.2 for a WPF project. I'm adding System.Data.SQLite as a data provider. In App.config file it will update with this code:
<system.data>
<DbProviderFactories>
<remove invariant="System.Data.SQLite.EF6" />
<add name="SQLite Data Provider (Entity Framework 6)"
invariant="System.Data.SQLite.EF6"
description=".NET Framework Data Provider for SQLite (Entity Framework 6)"
type="System.Data.SQLite.EF6.SQLiteProviderFactory, System.Data.SQLite.EF6" />
<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" />
</DbProviderFactories>
</system.data>
Also update
<entityFramework>
<providers>
<provider invariantName="System.Data.SQLite.EF6" type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6" />
</providers>
</entityFramework>
I am trying to add an ADO.NET Entity Data Model. Then I get the error below:
How can I fix this problem?
I got a solution for this by installing an extension. That is dotConnect ADO.NET Data Provider for SQLite.
It's working by providing an entity from the database.
I seem to be having issues when using MySQL to connect to an existing DB. I am using Entity Framework and using it to read from a current Database.
When I go and visit a page to load info up, I get the following error
System.InvalidOperationException: 'The Entity Framework provider type 'MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity' registered in the application config file for the ADO.NET provider with invariant name 'MySql.Data.MySqlClient' could not be loaded. Make sure that the assembly-qualified name is used and that the assembly is available to the running application. See http://go.microsoft.com/fwlink/?LinkId=260882 for more information.'
My web.config:
<entityFramework>
<defaultConnectionFactory
type="MySql.Data.Entity.MySqlConnectionFactory, MySql.Data.Entity.EF6" />
<providers>
<provider invariantName="MySql.Data.MySqlClient"
type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity" />
</providers>
</entityFramework>
<system.data>
<DbProviderFactories>
<remove invariant="MySql.Data.MySqlClient" />
<add description=".Net Framework Data Provider for MySQL"
invariant="MySql.Data.MySqlClient" name="MySQL Data Provider"
type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.10.6.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
</DbProviderFactories>
</system.data>
Help appreciated in advance
I'm new on this. I got a sample project that runs perfectly on another pc but get an error when running on my own pc. I changed the connection string and restored the database only. I am using a SQLServer connection, but when I run the project it shows a MySQLRoleProvider error. I searched web.config for this configuration but it isn't there. How can I solve this issue?
The message:
`Parser Error Message: Could not load file or assembly 'MySql.Web, Version=6.7.4.0, Culture=neutral, PublicKeyToken=+++' or one of its dependencies.
<add name="MySQLRoleProvider"
type="MySql.Web.Security.MySQLRoleProvider, MySql.Web, Version=6.7.4.0, Culture=neutral, PublicKeyToken=***"
connectionStringName="LocalMySqlServer"
applicationName="/"/>`
You need to install the MySQL Connector binaries first for this to work.
http://dev.mysql.com/downloads/connector/net/
If after installation you still face problems, verify that the dll's are declared in machine.config file of the framework version that you're running.
Add following to config file...
<configuration>
<!--Other omited-->
<system.data>
<DbProviderFactories>
<clear />
<add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient"
description=".Net Framework Data Provider for MySQL"
type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data,
Version=6.6.6.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
</DbProviderFactories>
</system.data>
<!--Other omited-->
</configuration>
With C#, Framework 4.5 and MySqL connector installed on my PC
If I tried
using MySql.Data.MySqlClient;
...
MySqlConnection tst = new MySqlConnection();
Everything works, but now
DbProviderFactory factory =
DbProviderFactories.GetFactory("MySql.Data.MySqlClient");
Raises the error :
Unable to find the requested .Net Framework Data Provider. It may not be installed.
Don't understand !?
does your config file have an entry
<system.data>
<DbProviderFactories >
<add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.6.5.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
</DbProviderFactories>
</system.data>
I have same problem with DbFactory for Firebird connections. The problem is, that it is not enough to add DbProviderFactories section to configuration file, but you must also add appropriate NuGet package to project, where you modified that config.
Hi I started building apps with this technology and I am facing a weird problem... on some machines I need to add theese lines to the app.config to get to work:
<system.data>
<DbProviderFactories>
<add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.3.0.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
</DbProviderFactories>
</system.data>
while in other machines it runs well without theese lines.... the thing is that when I add theese lines the app wont run on machines that did not needed theese lines in the firs place, and I would like not to publish to versions of the app, is there a way to solve this?
Any Help would be appreciated!!!
Would post as comment but i can't yet.**
It could be your machine.configs are different. I would check to make sure your DbProviderFactories are registered consistently in the machine.config.
Did you try removing it?
<system.data>
<DbProviderFactories>
<remove invariant="MySql.Data.MySqlClient"/>
<add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.3.0.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
</DbProviderFactories>
</system.data>