So you just downloaded Visual Studio 2010 RC and want to connect to your MySql database and have the powers of the Entity Framework (EF)?
Your problem is probably that you can’t find the MySql connector when you add data source in Visual Studio 2010 RC. MySql just got VS 2010 support 15th feb 2010, but the connector is not stable yet. Go to the Development releases tab to download the latest connector. You must get MySql Connector /NET 6.3.0 alpha or later.
After installing the MySql Connector /NET 6.3.0 alpha you can open the Server Explorer, press Connect to Database and there you should see MySql in the list of data sources.
Note: Entity Framework does not support ODBC drivers and that is why you need the ADO.NET connector from MySql.
