VB连接Mysql数据库

当然机器装有mysql数据库

然后下载安装Mysql，odbc驱动

须要加入ado‘菜单"project"->"引用" 找 Microsoft ActiveX Data Object.... 或者简单点找到ado控件 扔到窗体上 再删除 也行

在vb中连接数据库的代码：

Dim cn As New ADODB.Connection
Dim rs As New ADODB.Recordset


‘ 定义数据库连接字符串变量
Dim strCn As String


‘ 定义数据库连接參数变量
Dim db_host As String
Dim db_user As String
Dim db_pass As String
Dim db_data As String


‘ 定义 SQL 语句变量
Dim sql As String




‘ 初始化数据库连接变量
db_host = "localhost"
db_user = "root" ‘username
db_pass = "root" ’用户password
db_data = "radio" ‘数据库名


‘ MySQL ODBC 连接參数
‘+------------+---------------------+----------------------------------+
‘| 參数名     | 默认值               | 说明                             |
‘+------------+------------------------------------------------------–+
‘| user       | ODBC (on Windows)   | MySQL username                     |
‘| server     | localhost           | MySQL 服务器地址                 |
‘| database   |                     | 默认连接数据库                   |
‘| option     | 0                   | 參数用以指定连接的工作方式       |
‘| port       | 3306                 | 连接端口                         |
‘| stmt       |                     | 一段声明, 能够在连接数据库后执行 |
‘| password   |                     | MySQL 用户密码                   |
‘| socket     |                     | (略)                             |
‘+------------+---------------------+----------------------------------+


‘ 具体查看官方说明
‘ http://dev.mysql.com/doc/refman/5.0/en/myodbc-configuration-connection-parameters.html


strCn = "DRIVER={MySQL ODBC 3.51 Driver};" & _
         "SERVER=" & db_host & ";" & _
         "DATABASE=" & db_data & ";" & _
         "UID=" & db_user & ";PWD=" & db_pass & ";" & _
         "OPTION=3;stmt=SET NAMES GB2312"


‘ stmt=SET NAMES GB2312
‘ 这句是设置数据库编码方式
‘ 中文操作系统须要设置成 GB2312
‘ 这样中文才不会有问题
‘ 版本号要求 mysql 4.1+


‘ 连接数据库
cn.Open strCn
‘ 设置该属性, 使 recordcount 和 absolutepage 属性可用
cn.CursorLocation = adUseClient


‘ 訪问表 table1
sql = "select nicheng,xinqing from nichengandxinqing where uid=‘1‘"
rs.Open sql, cn

Dim nicheng As String
Dim xinqing As String


‘载入用户昵称
nicheng = rs.Fields(0)
Label1.Caption = nicheng


‘载入用户心情短语
xinqing = rs.Fields(1)
Label2.Caption = xinqing
‘鼠标放在心情短语提示短语具体信息
Label2.ToolTipText = xinqing

‘载入网络图片
Image1.Picture = LoadPicture("http://hi.csdn.net/attachment/201201/5/8747069_1325751084ZiD4.jpg")