📄 frmmanagers.frm
字号:
VERSION 5.00
Begin VB.Form frmManagers
BorderStyle = 1 'Fixed Single
Caption = "系统管理员管理"
ClientHeight = 2145
ClientLeft = 45
ClientTop = 330
ClientWidth = 4950
LinkTopic = "Form3"
MaxButton = 0 'False
MDIChild = -1 'True
MinButton = 0 'False
ScaleHeight = 2145
ScaleWidth = 4950
Begin VB.TextBox txtName
Height = 270
Left = 1650
MaxLength = 6
TabIndex = 0
Top = 525
Width = 1425
End
Begin VB.CommandButton cmdSave
Caption = "保存"
Height = 300
Left = 3443
TabIndex = 4
Top = 1020
Width = 735
End
Begin VB.CommandButton cmdExit
Cancel = -1 'True
Caption = "取消"
Height = 315
Left = 3443
TabIndex = 5
Top = 1350
Width = 735
End
Begin VB.CommandButton cmdDelete
Caption = "删除"
Height = 300
Left = 3443
TabIndex = 3
Top = 690
Width = 735
End
Begin VB.CommandButton cmdAdd
Caption = "添加"
Height = 300
Left = 3443
TabIndex = 2
Top = 360
Width = 735
End
Begin VB.TextBox txtPwd
Height = 270
Left = 1650
MaxLength = 6
TabIndex = 1
Top = 945
Width = 1425
End
Begin VB.PictureBox picNavigation
AutoSize = -1 'True
BorderStyle = 0 'None
Height = 360
Left = 750
ScaleHeight = 360
ScaleWidth = 2685
TabIndex = 10
Top = 1350
Width = 2685
Begin VB.CommandButton cmdMove
Height = 300
Index = 1
Left = 360
Picture = "frmManagers.frx":0000
Style = 1 'Graphical
TabIndex = 7
Top = 15
Width = 345
End
Begin VB.CommandButton cmdMove
Height = 300
Index = 0
Left = 15
Picture = "frmManagers.frx":0045
Style = 1 'Graphical
TabIndex = 6
Top = 15
Width = 345
End
Begin VB.CommandButton cmdMove
Height = 300
Index = 3
Left = 2280
Picture = "frmManagers.frx":0092
Style = 1 'Graphical
TabIndex = 9
Top = 15
Width = 345
End
Begin VB.CommandButton cmdMove
Height = 300
Index = 2
Left = 1950
Picture = "frmManagers.frx":00E1
Style = 1 'Graphical
TabIndex = 8
Top = 15
Width = 345
End
Begin VB.TextBox txtNews
Height = 300
Left = 675
Locked = -1 'True
TabIndex = 11
TabStop = 0 'False
Top = 15
Width = 1275
End
End
Begin VB.Label Label1
AutoSize = -1 'True
Caption = "用户名"
Height = 180
Left = 968
TabIndex = 13
Top = 570
Width = 540
End
Begin VB.Label Label2
AutoSize = -1 'True
Caption = "口 令"
Height = 180
Left = 968
TabIndex = 12
Top = 975
Width = 540
End
End
Attribute VB_Name = "frmManagers"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim isAdding As Boolean '定义操作状态标志
Dim objAdmin As Recordset '用于保存管理员数据表记录
Dim objCn As Connection '用于建立数据库联接
Private Sub cmdExit_Click()
Unload Me '关闭系统用户管理窗体
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=学籍管理"
.Open
End With
'获取管理员记录
Set objAdmin = New Recordset '实例化objAdmin对象
With objAdmin
Set .ActiveConnection = objCn
.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 管理员" '获取管理员登录信息
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 objAdmin
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
txtName = ""
txtPwd = ""
Else
'显示当前记录数据
txtName = .Fields("用户名")
txtPwd = .Fields("口令")
'显示当前记录编号和记录总数
txtNews = "记录：" & .AbsolutePosition & "/" & .RecordCount
End If
End With
If isAdding Then isAdding = False
End Sub
Private Sub cmdAdd_Click()
txtNews = "添加新记录"
txtName = ""
txtPwd = ""
isAdding = True
End Sub
Private Sub cmdDelete_Click()
'根据是否处于添加记录状态执行不同的操作
If isAdding Then
'退出添加记录状态，显示当前记录
isAdding = False
If objAdmin.BOF And objAdmin.EOF Then
txtNews = "记录：无" '显示无记录提示
Else
'显示当前记录数据
txtName = objAdmin.Fields("用户名")
txtPwd = objAdmin.Fields("口令")
'显示当前记录编号和记录总数
txtNews = "记录：" & objAdmin.AbsolutePosition & "/" & objAdmin.RecordCount
End If
Else
If objAdmin.RecordCount > 0 Then
If MsgBox("是否删除当前记录？", vbYesNo + vbQuestion, "系统用户管理") = vbYes Then
'执行删除当前记录操作
objAdmin.Delete
'显示下一记录数据
cmdMove(2).Value = True
Else
'显示当前记录数据
txtName = objAdmin.Fields("用户名")
txtPwd = objAdmin.Fields("口令")
'显示当前记录编号和记录总数
txtNews = "记录：" & objAdmin.AbsolutePosition & "/" & objAdmin.RecordCount
End If
End If
End If
End Sub
Private Sub cmdSave_Click()
Dim objCopy As New Recordset
If Trim(txtName) = "" Then
MsgBox "用户名不能为空！", vbCritical, "系统用户管理"
txtName.SetFocus
txtName = ""
ElseIf Len(Trim(txtPwd)) <> 6 Then
MsgBox "用户口令必须为6位字符串！", vbCritical, "系统用户管理"
txtPwd.SetFocus
txtPwd.SelStart = 0
txtPwd.SelLength = Len(txtPwd)
Else
Set objCopy = objAdmin.Clone
With objCopy
If .RecordCount > 0 Then
'检查用户名是否被使用
.MoveFirst
.Find "用户名='" & Trim(txtName) & "'"
If (isAdding And Not .EOF) Or _
(Not isAdding And Not .EOF And _
.AbsolutePosition <> objAdmin.AbsolutePosition) Then
MsgBox "用户名：" & Trim(txtName) _
& "已被使用，请使用其他用户名！", _
vbCritical, "系统用户管理"
txtName.SetFocus
txtName.SelStart = 0
txtName.SelLength = Len(txtName)
Exit Sub
Else
'保存或添加记录
If isAdding Then objAdmin.AddNew
objAdmin.Fields("用户名") = Trim(txtName)
objAdmin.Fields("口令") = Trim(txtPwd)
objAdmin.Update
MsgBox "数据保存成功！", vbInformation, "系统用户管理"
isAdding = False
'显示当前记录编号和记录总数
txtNews = "记录：" & objAdmin.AbsolutePosition & "/" & objAdmin.RecordCount
End If
Else
'添加新记录
If isAdding Then
objAdmin.AddNew
objAdmin.Fields("用户名") = Trim(txtName)
objAdmin.Fields("口令") = Trim(txtPwd)
objAdmin.Update
MsgBox "数据保存成功！", vbInformation, "系统用户管理"
isAdding = False
'显示当前记录编号和记录总数
txtNews = "记录：" & objAdmin.AbsolutePosition & "/" & objAdmin.RecordCount
End If
End If
End With
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 objAdmin = Nothing '释放记录集对象
End Sub
'限制用户名输入
Private Sub txtName_KeyPress(KeyAscii As Integer)
If Not (Chr(KeyAscii) Like "[0-9]" Or Chr(KeyAscii) Like "[a-z]" _
Or Chr(KeyAscii) Like "[A-Z]" Or KeyAscii = vbKeyBack) Then
KeyAscii = 0 '输入不是数字、英文字母或退格键，取消输入
End If
End Sub
'限制口令输入
Private Sub txtPwd_KeyPress(KeyAscii As Integer)
If Not (Chr(KeyAscii) Like "[0-9]" Or Chr(KeyAscii) Like "[a-z]" _
Or Chr(KeyAscii) Like "[A-Z]" Or KeyAscii = vbKeyBack) Then
KeyAscii = 0 '输入不是数字、英文字母或退格键，取消输入
End If
End Sub
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