mysql - 使用 OLEDB 连接 localhost sql 数据库

Question

我有以下代码使用 VB.NET 连接本地主机数据库和 OLEDB。下面是代码:

Imports System.IO
Imports System.Data
Imports System.Data.OleDb

Module Module1
Public conn As OleDbConnection

Public Sub OpenConnection()

    conn = New OleDbConnection()

    If conn.State = ConnectionState.Closed Then

        Try
        conn.ConnectionString = "provider=MySQLProv; Data Source=mydbname; User Id=root; Password=password"

         conn.Open()

            MsgBox("Connected to DB")

Catch ex As OleDbException
                MessageBox.Show("Error Connecting to Database")
                conn.Close()
                conn.Dispose()
            End Try
        End If
    End Sub

运行时报错“'MySQLProv'提供程序未在本地机器上注册。”出现。我已经安装了 MySQL Connector Net 6.5.7 和 MySQL Connector ODBC 5.3，但是 Visual Studios 说它没有安装。

我也尝试过如下不同的连接字符串，但每个都有错误:

            'conn.ConnectionString = "Driver={MySQL};SERVER=localhost;DATABASE=smsengine5;USER=root;PASSWORD=password"

            'conn.ConnectionString = "provider=MYSQLOLEDB; Driver={MySQL};SERVER=localhost;DATABASE=mydbname;USER=root;PASSWORD=password"

            'conn.ConnectionString = "provider=.NET Framework Data Provider for MySQL;*;Uid=root;Pwd=password;Database=mydbname;"

            'conn.ConnectionString = "provider=MySQLProv; Data Source=mydbname; User Id=root; Password=password"

            'conn.ConnectionString = "Driver={mysql};Server=localhost;PORT=3306;UI D=root;PWD=password;OPTION=16386"

            'conn.ConnectionString = "Provider=<<MySQLProv>>; Location=<<localhost>>; Data Source=<<mydbname>>; USER ID=<<root>>; PASSWORD=<<password>>; option=3;port=33 06;"

            'conn.ConnectionString = "Driver={MySQL ODBC 3.51 Driver};Server=localhost Database=mydbname; User=root; Password=password; Optio n=4;"

            'conn.ConnectionString = "Provider=MySQLProv.3.9;Location=<<localhost>>;Data Source=<<mydbname>>; USER ID=<<>root>>;Password=<<password>>;port=<<3306>>;"

            'conn.ConnectionString = "Provider=MySQL Provider; Data Source=localhost; User ID=root; Password=password; Initial Catalog=mydbname;"

            'conn.ConnectionString = "Server=localhost;Database=mydbname;Uid=User;Pwd=mypass; providerName=MySql.Data.MySqlClient"

            'conn.ConnectionString = "Driver={MySQL ODBC 3.51 Driver};Server=localhost;Database=mydbname; User=root;Password=myPassword;Option=3;"

            'conn.ConnectionString = "Provider=SQLOLEDB; Data Source=localhost; Initial Catalog=mydbname; User ID=root; Password=password;"

            'conn.ConnectionString = "Data Source=localhost:3306;Database=mydbname;User ID=root; Password=password;"

我还在我的项目中引用了 Mysql.Data。

**我不想使用 MySQL 客户端。

请帮忙。谢谢

Answer 1

使用 OLEDB 的 MySQL 有三个连接字符串，如 here 所述:

标准

Server=myServerAddress;Database=myDataBase;Uid=myUsername;Pwd=myPassword;
MySQL

指定 TCP 端口

Server=myServerAddress;Port=1234;Database=myDataBase;Uid=myUsername;
Pwd=myPassword;

端口3306是默认的MySql端口。如果使用Unix socket，该值将被忽略。

多台服务器

使用它连接到复制服务器配置中的服务器，而不用担心要使用哪个服务器。

Server=serverAddress1, serverAddress2, serverAddress3;Database=myDataBase;
Uid=myUsername;Pwd=myPassword;