Question

我有以下代码使用VB.NET连接localhost数据库和OLEDB。以下是代码：

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，错误＆＃34; MySQLProv＆＃39;提供商未在本地计算机上注册。＆＃34;出现。我已经安装了MySQL Connector Net 6.5.7和MySQL Connector ODBC 5.3，但Visual Studios表示它没有安装。

我也尝试过不同的连接字符串，但每个连接字符串都有错误：

            '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;"

我也在我的项目中引用了Mysql.Data。

**我不想使用MySQL客户端。

请帮忙。感谢

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套接字，则忽略该值。

多台服务器

使用此选项连接到复制服务器配置中的服务器，而无需考虑要使用的服务器。

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

Answer 2

使用“provider = MSDataShape”

解决

将localhost sql数据库与OLEDB连接

2 个答案: