frmmain.frm

《VB6数据库开发指南》所有的例程的源码

VERSION 5.00
Begin VB.Form frmMain 
   Caption         =   "Alter Objects"
   ClientHeight    =   615
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   3750
   LinkTopic       =   "Form1"
   ScaleHeight     =   615
   ScaleWidth      =   3750
   StartUpPosition =   3  'Windows Default
   Begin VB.CommandButton cmdDrop 
      Caption         =   "Drop"
      Height          =   375
      Left            =   2520
      TabIndex        =   2
      Top             =   120
      Width           =   1095
   End
   Begin VB.CommandButton cmdAlter 
      Caption         =   "Alter"
      Height          =   375
      Left            =   1320
      TabIndex        =   1
      Top             =   120
      Width           =   1095
   End
   Begin VB.CommandButton cmdCreate 
      Caption         =   "Create"
      Height          =   375
      Left            =   120
      TabIndex        =   0
      Top             =   120
      Width           =   1095
   End
End
Attribute VB_Name = "frmMain"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Private mConn As Connection

Private Sub cmdAlter_Click()
    'alter the sample table
    Dim sCmd As String
    sCmd = "alter table HowToSample808 add MoreStuff CHAR(40) NULL"
    mConn.Execute sCmd, , adCmdText
End Sub

Private Sub cmdCreate_Click()
    'create the sample table
    Dim sCmd As String
    sCmd = "create table HowToSample808 (SampleId INTEGER NOT NULL"
    sCmd = sCmd + ", Stuff CHAR(40) NOT NULL)"
    mConn.Execute sCmd, , adCmdText
End Sub

Private Sub cmdDrop_Click()
    'drop the sample table
    Dim sCmd As String
    sCmd = "drop table HowToSample808"
    mConn.Execute sCmd, , adCmdText
End Sub

Private Sub Form_Load()
    'open the connection
    Set mConn = New Connection
    mConn.Open "Provider=SQLOLEDB.1;User ID=sa;Password=password;" _
        + "Location=WINEMILLER;Database=pubs"
End Sub

Private Sub Form_Unload(Cancel As Integer)
    mConn.Close
    Set mConn = Nothing
End Sub