mysql官方网站说得很清楚: Connector/Net is a fully-managed ADO.NET driver for MySQL. Starting with version 6.7, Connector/Net will no longer include the MySQL for Visual Studio integration. That functionality is now available in a separate product called MySQL for Visual Studio available using the MySQL Installer for Windows (see http://dev.mysql.com/tech-resources/articles/mysql-installer-for-windows.html).
Connector/Net is a fully-managed ADO.NET driver for MySQL.
Starting with version 6.7, Connector/Net will no longer include the MySQL for Visual Studio integration. That functionality is now available in a separate product called MySQL for Visual Studio available using the MySQL Installer for Windows (see http://dev.mysql.com/tech-resources/articles/mysql-installer-for-windows.html).
使用Connector/Net 6.6.6版本测试通过!
Select Platform… .NET & Mono 再下载。