www.pudn.com > vb71053453673553.rar > FormClear.frm
VERSION 5.00
Object = "{67397AA1-7FB1-11D0-B148-00A0C922E820}#6.0#0"; "MSADODC.OCX"
Begin VB.Form FormClear
BorderStyle = 1 'Fixed Single
Caption = "SV班级成绩管理 - 清空数据库"
ClientHeight = 5295
ClientLeft = 45
ClientTop = 435
ClientWidth = 4500
Icon = "FormClear.frx":0000
LinkTopic = "Form1"
MaxButton = 0 'False
MinButton = 0 'False
ScaleHeight = 5295
ScaleWidth = 4500
StartUpPosition = 2 '屏幕中心
Begin VB.CommandButton Command4
Caption = "更改权限码"
Height = 405
Left = 3000
TabIndex = 5
Top = 3870
Width = 1335
End
Begin MSAdodcLib.Adodc AdoBJ
Height = 375
Left = 1680
Top = 1680
Visible = 0 'False
Width = 2295
_ExtentX = 4048
_ExtentY = 661
ConnectMode = 0
CursorLocation = 3
IsolationLevel = -1
ConnectionTimeout= 15
CommandTimeout = 30
CursorType = 3
LockType = 3
CommandType = 8
CursorOptions = 0
CacheSize = 50
MaxRecords = 0
BOFAction = 0
EOFAction = 0
ConnectStringType= 1
Appearance = 1
BackColor = -2147483643
ForeColor = -2147483640
Orientation = 0
Enabled = -1
Connect = ""
OLEDBString = ""
OLEDBFile = ""
DataSourceName = ""
OtherAttributes = ""
UserName = ""
Password = ""
RecordSource = ""
Caption = "AdoBJ"
BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851}
Name = "宋体"
Size = 9
Charset = 134
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
_Version = 393216
End
Begin MSAdodcLib.Adodc AdoNJ
Height = 405
Left = 1740
Top = 1290
Visible = 0 'False
Width = 2100
_ExtentX = 3704
_ExtentY = 714
ConnectMode = 0
CursorLocation = 3
IsolationLevel = -1
ConnectionTimeout= 15
CommandTimeout = 30
CursorType = 3
LockType = 3
CommandType = 8
CursorOptions = 0
CacheSize = 50
MaxRecords = 0
BOFAction = 0
EOFAction = 0
ConnectStringType= 1
Appearance = 1
BackColor = -2147483643
ForeColor = -2147483640
Orientation = 0
Enabled = -1
Connect = ""
OLEDBString = ""
OLEDBFile = ""
DataSourceName = ""
OtherAttributes = ""
UserName = ""
Password = ""
RecordSource = ""
Caption = "AdoNJ"
BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851}
Name = "宋体"
Size = 9
Charset = 134
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
_Version = 393216
End
Begin MSAdodcLib.Adodc Adodc1
Height = 330
Left = 1260
Top = 390
Visible = 0 'False
Width = 2145
_ExtentX = 3784
_ExtentY = 582
ConnectMode = 0
CursorLocation = 3
IsolationLevel = -1
ConnectionTimeout= 15
CommandTimeout = 30
CursorType = 3
LockType = 3
CommandType = 8
CursorOptions = 0
CacheSize = 50
MaxRecords = 0
BOFAction = 0
EOFAction = 0
ConnectStringType= 1
Appearance = 1
BackColor = -2147483643
ForeColor = -2147483640
Orientation = 0
Enabled = -1
Connect = ""
OLEDBString = ""
OLEDBFile = ""
DataSourceName = ""
OtherAttributes = ""
UserName = ""
Password = ""
RecordSource = ""
Caption = "Adodc1"
BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851}
Name = "宋体"
Size = 9
Charset = 134
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
_Version = 393216
End
Begin VB.ListBox List1
Height = 4920
Left = 0
TabIndex = 3
Top = 0
Width = 2835
End
Begin VB.CommandButton Command3
Caption = "删除本班级"
Height = 405
Left = 3000
TabIndex = 2
Top = 90
Width = 1335
End
Begin VB.CommandButton Command2
Caption = "关闭"
Default = -1 'True
Height = 405
Left = 3000
TabIndex = 1
Top = 4470
Width = 1335
End
Begin VB.CommandButton Command1
Caption = "清空所有数据"
Height = 405
Left = 3000
TabIndex = 0
TabStop = 0 'False
Top = 690
Width = 1335
End
Begin VB.Label Label1
Alignment = 2 'Center
BorderStyle = 1 'Fixed Single
Height = 285
Left = 0
TabIndex = 4
Top = 5010
Width = 4515
End
End
Attribute VB_Name = "FormClear"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Private Sub Command1_Click()
Adodc1.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path & "\db\SVDB.mdb;Persist Security Info=False"
Adodc1.RecordSource = "SELECT * FROM 成绩"
Adodc1.Refresh
On Error Resume Next
If MsgBox("您是否确定要清空学生数据库中的学生记录(本操作不可逆，请谨慎操作)？" & Chr(10) & Chr(13) & "点击[是]清空；点击[否]返回", vbQuestion + vbYesNo, "确认") = vbYes Then
With Adodc1.Recordset
.MoveFirst
Do While Not .EOF
.Delete
.MoveNext
Loop
End With
MsgBox ("数据已全部清除!")
Form_Load
End If
End Sub
Private Sub Command2_Click()
End
End Sub
Private Sub Command3_Click()
On Error Resume Next
If MsgBox("您是否确定要删除" & List1.Text & "班级学生数据库中的学生记录？" & Chr(10) & Chr(13) & "点击[是]删除；点击[否]返回", vbQuestion + vbYesNo, "确认") = vbYes Then
Adodc1.Recordset.MoveFirst
Do While Not Adodc1.Recordset.EOF
Adodc1.Recordset.Delete
Adodc1.Recordset.MoveNext
Loop
MsgBox List1.Text & "班的记录已经删除!"
DoEvents
Form_Load
End If
Command3.Enabled = False
End Sub
Private Sub Command4_Click()
frmLogin1.Show 1
End Sub
Private Sub Form_Load()
On Error Resume Next
List1.Clear
Dim I, J
AdoNJ.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source= " & App.Path & "\db\svdb.mdb;Persist Security Info=False"
AdoBJ.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source= " & App.Path & "\db\svdb.mdb;Persist Security Info=False"
AdoNJ.RecordSource = "SELECT DISTINCT 年级 FROM 成绩 ORDER BY 年级"
AdoNJ.Refresh
On Error Resume Next
If AdoNJ.Recordset.EOF Then
Command1.Enabled = False
Command3.Enabled = False
Exit Sub
End If
AdoNJ.Recordset.MoveFirst
For I = 1 To AdoNJ.Recordset.RecordCount
AdoBJ.RecordSource = "SELECT DISTINCT 班级 FROM 成绩 WHERE 年级 = '" & AdoNJ.Recordset.Fields(0).Value & "' ORDER BY 班级"
AdoBJ.Refresh
For J = 1 To AdoBJ.Recordset.RecordCount
List1.AddItem AdoNJ.Recordset.Fields(0).Value & AdoBJ.Recordset.Fields(0).Value
AdoBJ.Recordset.MoveNext
Next J
AdoNJ.Recordset.MoveNext
Next I
On Error Resume Next
End Sub
Private Sub List1_Click()
Adodc1.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path & "\db\SVDB.mdb;Persist Security Info=False"
Adodc1.RecordSource = "SELECT ID FROM 成绩 WHERE 年级 ='" & Left(Trim(List1.Text), 4) & "' AND 班级='" & Right(Trim(List1.Text), 3) & "'"
Adodc1.Refresh
Label1.Caption = List1.Text & "班共有" & Adodc1.Recordset.RecordCount & "条记录"
Command3.Enabled = True
End Sub