Visual Studio 2015 添加数据源时出现“您已有可用连接"错误 [英] 'You have a usable connection already' error in Visual Studio 2015 adding Data Source

问题描述

Visual Studio 2015；视窗 10;

Visual Studio 2015; Windows 10;

在数据源配置向导中，尝试从网络上的 MySQL 安装添加表.我走到这一步

In the Data Source Configuration Wizard, trying to add a table from a MySQL install on the network. I get up to this step

当我单击完成"时，我收到此错误消息:

When I click 'Finish', I then get this error message:

其他 SO 帖子提到了这个问题，没有一个得到解决.这是一个全新的WinForms项目，没有写代码.

Other SO posts refer to this issue, none are resolved. This is a fresh WinForms project, there is no code written.

推荐答案

我在 MySQL 连接器论坛 (http://forums.mysql.com/read.php?174,648619,649199#msg-649199)

I found a workaround on the MySQL Connector forums (http://forums.mysql.com/read.php?174,648619,649199#msg-649199)

基本上，您想使用连接器 6.9.8，而不是 6.9.9.所以卸载6.9.9，从https://downloads.mysql.com/安装6.9.8档案/c-net/

Basically, you want to use Connector 6.9.8, not 6.9.9. So uninstall 6.9.9, install 6.9.8 from https://downloads.mysql.com/archives/c-net/

您可以继续将 MySQL 1.2.6 用于 Visual Studio.我将添加此注释:

You can keep using MySQL 1.2.6 for Visual Studio. I will add this note:

重要

在安装 MySQL Connector/Net 之前，始终为 Visual Studio 安装 MySQL.

Always install MySQL for Visual Studio before installing MySQL Connector/Net.

来自:https://dev.mysql.com/doc/visual-studio/en/visual-studio-install.html#Requirements 以防您重新安装所有内容.

From: https://dev.mysql.com/doc/visual-studio/en/visual-studio-install.html#Requirements in case you are reinstalling everything.

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