form1.frm

VB连接SQL实例,对初学者很有帮助,帮助大大滴有

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "ADODB中使用OLEDB接口"
   ClientHeight    =   2835
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   4350
   LinkTopic       =   "Form1"
   ScaleHeight     =   2835
   ScaleWidth      =   4350
   StartUpPosition =   2  '屏幕中心
   Begin VB.ComboBox ComboName 
      Height          =   300
      Left            =   600
      TabIndex        =   2
      Text            =   "Combo1"
      Top             =   720
      Width           =   3255
   End
   Begin VB.CommandButton CmdExit 
      Caption         =   "退出"
      Height          =   375
      Left            =   2520
      TabIndex        =   1
      Top             =   2160
      Width           =   1335
   End
   Begin VB.CommandButton CmdExecute 
      Caption         =   "执行"
      Height          =   375
      Left            =   480
      TabIndex        =   0
      Top             =   2160
      Width           =   1455
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
'声明段定义ADODB对象
Dim conn As New ADODB.Connection
Dim rs As New ADODB.Recordset
Dim connstr As String
'窗体启动时执行代码
Private Sub Form_Load()
 ComboName.Text = "学生姓名列表"
End Sub
'单击执行按钮时的执行代码
Private Sub CmdExecute_Click()
 '定义Connstr字符串的内容，体现不同的接口
 '使用OLEDB接口的连接字符串内容，使用时请按照自己的环境设置账户和密码
 connstr = " Provider=SQLOLEDB.1;Persist Security Info=True;User ID=sa;Password=12345678;Initial Catalog=db_student;Data Source = MYNETSERVER"
 
 conn.ConnectionString = connstr
 conn.Open connstr
 rs.CursorLocation = adUseClient
 rs.Open "T_STUDENT", conn, adOpenKeyset, adLockPessimistic
 Do While Not rs.EOF And Not rs.BOF
  ComboName.AddItem (rs.Fields(1))
  rs.MoveNext
 Loop
 rs.Close
 conn.Close
 Set rs = Nothing
 Set conn = Nothing
End Sub
'单击退出按钮时的执行代码
Private Sub CmdExit_Click()
  Unload Me
End Sub