www.pudn.com > cjg2.rar > frmOldTests.frm
VERSION 5.00
Begin VB.Form OldTests
BorderStyle = 1 'Fixed Single
Caption = "历届试题管理"
ClientHeight = 1905
ClientLeft = 45
ClientTop = 330
ClientWidth = 4455
LinkTopic = "Form1"
MaxButton = 0 'False
MDIChild = -1 'True
MinButton = 0 'False
ScaleHeight = 1905
ScaleWidth = 4455
Begin VB.TextBox txtNum
Height = 270
Left = 1635
Locked = -1 'True
MaxLength = 8
TabIndex = 9
Top = 195
Width = 1995
End
Begin VB.TextBox txtName
Height = 270
Left = 1620
Locked = -1 'True
MaxLength = 20
TabIndex = 8
Top = 607
Width = 1995
End
Begin VB.PictureBox picNavigation
AutoSize = -1 'True
BorderStyle = 0 'None
Height = 360
Left = 885
ScaleHeight = 360
ScaleWidth = 2685
TabIndex = 6
Top = 1312
Width = 2685
Begin VB.TextBox txtNews
Height = 300
Left = 690
Locked = -1 'True
TabIndex = 7
TabStop = 0 'False
Top = 15
Width = 1275
End
Begin VB.CommandButton cmdMove
Height = 300
Index = 2
Left = 1950
Picture = "frmOldTests.frx":0000
Style = 1 'Graphical
TabIndex = 4
Top = 15
Width = 345
End
Begin VB.CommandButton cmdMove
Height = 300
Index = 3
Left = 2280
Picture = "frmOldTests.frx":0044
Style = 1 'Graphical
TabIndex = 5
Top = 15
Width = 345
End
Begin VB.CommandButton cmdMove
Height = 300
Index = 0
Left = 30
Picture = "frmOldTests.frx":0093
Style = 1 'Graphical
TabIndex = 2
Top = 15
Width = 345
End
Begin VB.CommandButton cmdMove
Height = 300
Index = 1
Left = 360
Picture = "frmOldTests.frx":00E0
Style = 1 'Graphical
TabIndex = 3
Top = 15
Width = 345
End
End
Begin VB.CommandButton cmdDelete
Caption = "删除"
Height = 300
Left = 1440
TabIndex = 0
Top = 997
Width = 735
End
Begin VB.CommandButton cmdExit
Cancel = -1 'True
Caption = "退出"
Height = 315
Left = 2280
TabIndex = 1
Top = 990
Width = 735
End
Begin VB.Label Label1
AutoSize = -1 'True
Caption = "试题编号"
Height = 180
Left = 825
TabIndex = 11
Top = 240
Width = 720
End
Begin VB.Label Label2
AutoSize = -1 'True
Caption = "试题名称"
Height = 180
Left = 825
TabIndex = 10
Top = 652
Width = 720
End
End
Attribute VB_Name = "OldTests"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Dim objOldTests As Recordset '用于保存数据库中的历届试题记录
Dim objCn As Connection '用于建立数据库联接
Private Sub cmdExit_Click()
Unload Me '关闭历届试题管理窗体
End Sub
Private Sub Form_Load()
'建立数据库联接
Set objCn = New Connection '实例化联接对象
With objCn '建立数据库联接
.Provider = "SQLOLEDB"
.ConnectionString = "User ID=sa;PWD=123;Data Source=(local);" & _
"Initial Catalog=自测考试"
.Open
End With
'获取历届试题记录
Set objOldTests = New Recordset '实例化objOldTests对象
With objOldTests
Set .ActiveConnection = objCn '设置数据库联接
.CursorLocation = adUseClient '指定使用客户端游标
.CursorType = adOpenStatic '指定使用静态游标
.LockType = adLockOptimistic
.Open "SELECT * FROM 历届试题" '获取历届试题记录
End With
'触发按钮单击事件，显示第一个记录
cmdMove(0).Value = True
End Sub
Private Sub cmdMove_Click(Index As Integer)
With objOldTests
Select Case Index '切换当前记录
Case 0 '使第一个记录成为当前记录
If .RecordCount > 0 And Not .BOF Then .MoveFirst
Case 1 '使上一个记录成为当前记录
If .RecordCount > 0 And Not .BOF Then
.MovePrevious
If .BOF Then .MoveFirst
End If
Case 2 '使下一个记录成为当前记录
If .RecordCount > 0 And Not .EOF Then
.MoveNext
If .EOF Then .MoveLast
End If
Case 3 '使最后一个记录成为当前记录
If .RecordCount > 0 And Not .EOF Then .MoveLast
End Select
If .RecordCount < 1 Then
txtNews = "记录：无" '显示无记录提示
txtNum = ""
txtName = ""
Else
'显示当前记录数据
txtNum = .Fields("编号")
txtName = .Fields("表名")
'显示当前记录编号和记录总数
txtNews = "记录：" & .AbsolutePosition & "/" & .RecordCount
End If
End With
End Sub
Private Sub cmdDelete_Click()
Dim strSQL$
'请求确认执行删除操作
If objOldTests.RecordCount > 0 Then
If MsgBox("是否删除当前记录？", vbYesNo + vbQuestion, "历届试题管理") = vbYes Then
'执行删除当前记录操作
strSQL = "DROP TABLE " & objOldTests.Fields("表名")
objOldTests.Delete
objCn.Execute strSQL
'显示下一记录数据
cmdMove(2).Value = True
End If
End If
End Sub
Private Sub Form_Unload(Cancel As Integer)
objCn.Close '关闭数据联接
Set objCn = Nothing '释放数据库联接
Set objOldTests = Nothing '释放记录集对象
End Sub