frmuserquery.frm

Visual Basic 6 大学教程的代码

VERSION 5.00
Object = "{67397AA1-7FB1-11D0-B148-00A0C922E820}#6.0#0"; "MSADODC.OCX"
Object = "{CDE57A40-8B86-11D0-B3C6-00A0C90AEA82}#1.0#0"; "MSDATGRD.OCX"
Begin VB.Form Form1 
   Caption         =   "Querying the Biblio.mdb Database"
   ClientHeight    =   4530
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   7005
   LinkTopic       =   "Form1"
   ScaleHeight     =   4530
   ScaleWidth      =   7005
   StartUpPosition =   3  'Windows Default
   Begin VB.CommandButton cmdQuery 
      Caption         =   "Submit User-defined Query"
      Height          =   315
      Left            =   0
      TabIndex        =   2
      Top             =   840
      Width           =   6975
   End
   Begin VB.TextBox txtUserQuery 
      Height          =   795
      Left            =   0
      MultiLine       =   -1  'True
      ScrollBars      =   2  'Vertical
      TabIndex        =   1
      Top             =   0
      Width           =   6975
   End
   Begin MSDataGridLib.DataGrid DataGrid1 
      Bindings        =   "frmUserQuery.frx":0000
      Height          =   3015
      Left            =   0
      TabIndex        =   0
      Top             =   1200
      Width           =   6975
      _ExtentX        =   12303
      _ExtentY        =   5318
      _Version        =   393216
      HeadLines       =   1
      RowHeight       =   15
      BeginProperty HeadFont {0BE35203-8F91-11CE-9DE3-00AA004BB851} 
         Name            =   "MS Sans Serif"
         Size            =   8.25
         Charset         =   0
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851} 
         Name            =   "MS Sans Serif"
         Size            =   8.25
         Charset         =   0
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ColumnCount     =   2
      BeginProperty Column00 
         DataField       =   ""
         Caption         =   ""
         BeginProperty DataFormat {6D835690-900B-11D0-9484-00A0C91110ED} 
            Type            =   0
            Format          =   ""
            HaveTrueFalseNull=   0
            FirstDayOfWeek  =   0
            FirstWeekOfYear =   0
            LCID            =   1033
            SubFormatType   =   0
         EndProperty
      EndProperty
      BeginProperty Column01 
         DataField       =   ""
         Caption         =   ""
         BeginProperty DataFormat {6D835690-900B-11D0-9484-00A0C91110ED} 
            Type            =   0
            Format          =   ""
            HaveTrueFalseNull=   0
            FirstDayOfWeek  =   0
            FirstWeekOfYear =   0
            LCID            =   1033
            SubFormatType   =   0
         EndProperty
      EndProperty
      SplitCount      =   1
      BeginProperty Split0 
         BeginProperty Column00 
         EndProperty
         BeginProperty Column01 
         EndProperty
      EndProperty
   End
   Begin MSAdodcLib.Adodc Adodc1 
      Height          =   330
      Left            =   0
      Top             =   4200
      Width           =   6975
      _ExtentX        =   12303
      _ExtentY        =   582
      ConnectMode     =   0
      CursorLocation  =   3
      IsolationLevel  =   -1
      ConnectionTimeout=   15
      CommandTimeout  =   30
      CursorType      =   3
      LockType        =   3
      CommandType     =   1
      CursorOptions   =   0
      CacheSize       =   50
      MaxRecords      =   0
      BOFAction       =   0
      EOFAction       =   0
      ConnectStringType=   1
      Appearance      =   1
      BackColor       =   -2147483643
      ForeColor       =   -2147483640
      Orientation     =   0
      Enabled         =   -1
      Connect         =   "Provider=Microsoft.Jet.OLEDB.3.51;Persist Security Info=False;Data Source=D:\Program Files\Microsoft Visual Studio\VB98\BIBLIO.MDB"
      OLEDBString     =   "Provider=Microsoft.Jet.OLEDB.3.51;Persist Security Info=False;Data Source=D:\Program Files\Microsoft Visual Studio\VB98\BIBLIO.MDB"
      OLEDBFile       =   ""
      DataSourceName  =   ""
      OtherAttributes =   ""
      UserName        =   ""
      Password        =   ""
      RecordSource    =   "SELECT * FROM Authors"
      Caption         =   ""
      BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851} 
         Name            =   "MS Sans Serif"
         Size            =   8.25
         Charset         =   0
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      _Version        =   393216
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
' Fig. 18.15
' Querying the Biblio.mdb database through an ADO Data Control
Option Explicit

Private Sub Form_Load()
   txtUserQuery.Text = Adodc1.RecordSource
   Adodc1.Caption = Adodc1.RecordSource
End Sub

Private Sub cmdQuery_Click()
   On Error Resume Next
   cmdQuery.Enabled = False
   Adodc1.RecordSource = txtUserQuery.Text
   Call Adodc1.Refresh
   Adodc1.Caption = Adodc1.RecordSource
End Sub

Private Sub Adodc1_MoveComplete( _
      ByVal adReason As ADODB.EventReasonEnum, _
      ByVal pError As ADODB.Error, _
      adStatus As ADODB.EventStatusEnum, _
      ByVal pRecordset As ADODB.Recordset)
   cmdQuery.Enabled = True
End Sub