frmpubinfo.frm

该压缩包包含有很多关于数据库原理与应用的课件以及课程设计

VERSION 5.00
Begin VB.Form frmPubInfo 
   Caption         =   "出版商信息"
   ClientHeight    =   4935
   ClientLeft      =   120
   ClientTop       =   420
   ClientWidth     =   10545
   LinkTopic       =   "Form2"
   MDIChild        =   -1  'True
   ScaleHeight     =   4935
   ScaleWidth      =   10545
   WindowState     =   2  'Maximized
   Begin VB.CommandButton cmdAddNew 
      BackColor       =   &H00FFFFFF&
      Caption         =   "添加"
      Height          =   495
      Left            =   120
      TabIndex        =   11
      Top             =   3120
      Width           =   1215
   End
   Begin VB.TextBox txtPubName 
      Height          =   495
      Left            =   2520
      TabIndex        =   1
      Text            =   "Text1"
      Top             =   1560
      Width           =   1935
   End
   Begin VB.TextBox txtPubId 
      Height          =   495
      Left            =   2520
      TabIndex        =   0
      Text            =   "Text1"
      Top             =   720
      Width           =   1935
   End
   Begin VB.CommandButton cmdDel 
      BackColor       =   &H00FFFFFF&
      Caption         =   "删除"
      Height          =   495
      Left            =   1388
      TabIndex        =   4
      Top             =   3120
      Width           =   1215
   End
   Begin VB.CommandButton cmdSave 
      BackColor       =   &H00FFFFFF&
      Caption         =   "保存"
      Height          =   495
      Left            =   2656
      TabIndex        =   5
      Top             =   3120
      Width           =   1215
   End
   Begin VB.CommandButton cmdCancel 
      BackColor       =   &H00FFFFFF&
      Caption         =   "取消"
      Height          =   495
      Left            =   3924
      TabIndex        =   6
      Top             =   3120
      Width           =   1215
   End
   Begin VB.CommandButton cmdFirst 
      BackColor       =   &H00FFFFFF&
      Caption         =   "第一条"
      Height          =   495
      Left            =   5192
      TabIndex        =   7
      Top             =   3120
      Width           =   1215
   End
   Begin VB.CommandButton cmdPrevious 
      BackColor       =   &H00FFFFFF&
      Caption         =   "上一条"
      Height          =   495
      Left            =   6460
      TabIndex        =   8
      Top             =   3120
      Width           =   1215
   End
   Begin VB.CommandButton cmdNext 
      BackColor       =   &H00FFFFFF&
      Caption         =   "下一条"
      Height          =   495
      Left            =   7728
      TabIndex        =   9
      Top             =   3120
      Width           =   1215
   End
   Begin VB.CommandButton cmdLast 
      BackColor       =   &H00FFFFFF&
      Caption         =   "最后一条"
      Height          =   495
      Left            =   9000
      TabIndex        =   10
      Top             =   3120
      Width           =   1215
   End
   Begin VB.Label Label2 
      Caption         =   "出版商名称"
      BeginProperty Font 
         Name            =   "微软雅黑"
         Size            =   14.25
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   480
      TabIndex        =   3
      Top             =   1560
      Width           =   1815
   End
   Begin VB.Label Label1 
      Caption         =   "出版商编号"
      BeginProperty Font 
         Name            =   "微软雅黑"
         Size            =   14.25
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   480
      TabIndex        =   2
      Top             =   720
      Width           =   1935
   End
End
Attribute VB_Name = "frmPubInfo"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub cmdAddNew_Click()
On Error Resume Next
Call Clear
Dim i As Integer
Dim max As Integer
max = 0
addnewflag = True
cmdAddNew.Enabled = False
'将指针指向记录集中的第一个记录
For i = 0 To rsPubInfo.RecordCount
    If max < rsPubInfo(0) Then
        max = rsPubInfo(0)
    End If
    rsPubInfo.MoveNext
Next i
rsPubInfo.MoveFirst

cmdCancel.Enabled = True
cmdDel.Enabled = False
cmdFirst.Enabled = False
cmdLast.Enabled = False
cmdPrevious.Enabled = False
cmdNext.Enabled = False
'添加新记录
rsPubInfo.AddNew
txtPubId.Text = max + 1
txtPubName.SetFocus
End Sub

Private Sub cmdCancel_Click()
cmdAddNew.Enabled = True
cmdDel.Enabled = True
cmdFirst.Enabled = True
cmdLast.Enabled = True
cmdPrevious.Enabled = True
cmdNext.Enabled = True
cmdCancel.Enabled = False
rsPubInfo.CancelUpdate
Call display
End Sub

Private Sub cmdDel_Click()
On Error Resume Next
If MsgBox("Are you sure to delete record", vbOKCancel + vbExclamation, "Deleting record") = vbOK Then
    rsPubInfo.Delete
    rsPubInfo.MoveNext
    If rsPubInfo.EOF Then
        rsPubInfo.MoveLast
        MsgBox "Last record"
    End If
    Call display
End If
End Sub

Private Sub cmdSave_Click()
On Error Resume Next
If txtPubId.Text = "" Or txtPubName.Text = "" Then
    MsgBox "Improper save! Data entry missing", vbCritical, "Fill up all fields"
    txtPubId.SetFocus
    Exit Sub
End If
'调用assign函数，将出版商的ID和名称赋给数据表的相应字段
Call assign
rsPubInfo.save
MsgBox "Record saved", vbInformation, "Record is saved"

cmdDel.Enabled = True
cmdFirst.Enabled = True
cmdLast.Enabled = True
cmdPrevious.Enabled = True
cmdNext.Enabled = True
cmdAddNew.Enabled = True
cmdCancel.Enabled = False
Exit Sub
End Sub
'assign函数
Private Sub assign()
    If addnewflag = True Then
        rsPubInfo(0) = Val(Trim$(txtPubId.Text))
        rsPubInfo(1) = Trim$(txtPubName.Text)
        addnewflag = False
    Else
        rsPubInfo(0) = Val(Trim$(txtPubId.Text))
        rsPubInfo(1) = Trim$(txtPubName.Text)
    End If
End Sub