canceluser.frm

班里一位同学做的学生管理系统的课程实习

VERSION 5.00
Begin VB.Form frmcanceluser 
   BackColor       =   &H0080FF80&
   Caption         =   "删除用户"
   ClientHeight    =   2550
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   4590
   LinkTopic       =   "Form1"
   ScaleHeight     =   2550
   ScaleWidth      =   4590
   StartUpPosition =   2  '屏幕中心
   Begin VB.Data Data1 
      Caption         =   "Data1"
      Connect         =   "Access"
      DatabaseName    =   ""
      DefaultCursorType=   0  '缺省游标
      DefaultType     =   2  '使用 ODBC
      Exclusive       =   0   'False
      Height          =   855
      Left            =   1560
      Options         =   0
      ReadOnly        =   0   'False
      RecordsetType   =   1  'Dynaset
      RecordSource    =   ""
      Top             =   3360
      Visible         =   0   'False
      Width           =   1140
   End
   Begin VB.CommandButton cmdcancel 
      Caption         =   "取消"
      Height          =   495
      Left            =   3000
      TabIndex        =   3
      Top             =   2880
      Width           =   1095
   End
   Begin VB.CommandButton cmdok 
      Caption         =   "删除"
      Height          =   495
      Left            =   360
      TabIndex        =   2
      Top             =   2880
      Width           =   1095
   End
   Begin VB.TextBox Text1 
      BackColor       =   &H00FFFFFF&
      BeginProperty Font 
         Name            =   "MS Sans Serif"
         Size            =   18
         Charset         =   0
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   2400
      TabIndex        =   1
      Top             =   1800
      Width           =   2175
   End
   Begin VB.Label Label2 
      BackColor       =   &H0000FF00&
      Caption         =   "真的要删除用户吗？"
      BeginProperty Font 
         Name            =   "MS Sans Serif"
         Size            =   18
         Charset         =   0
         Weight          =   700
         Underline       =   0   'False
         Italic          =   -1  'True
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   1200
      TabIndex        =   4
      Top             =   480
      Width           =   3375
   End
   Begin VB.Label Label1 
      BackColor       =   &H0000FF00&
      Caption         =   "请输入要删除的用户名"
      Height          =   375
      Left            =   240
      TabIndex        =   0
      Top             =   1920
      Width           =   1935
   End
End
Attribute VB_Name = "frmcanceluser"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub cmdcancel_Click()
Unload frmcanceluser
End Sub

Private Sub cmdok_Click()
'查看是否具有删除用户的权限
 If flag = 2 Then
    MsgBox "您没有权限进行添加用户！退出操作！！"
   Unload frmcanceluser
   Exit Sub
End If

 If Text1.Text = "" Then
    MsgBox "用户名不能为空，请重新输入！！！"
    Text1.SetFocus
    Exit Sub
 End If
  
  Data1.Connect = "Access"
  Data1.DatabaseName = "" & App.Path & "\db1.mdb"
  Data1.RecordSource = "select *from user"
  Data1.Refresh
  
 '判断要删除的用户是否存在
 Data1.Recordset.MoveFirst
While Data1.Recordset.Fields("User_Name") <> Text1.Text
      Data1.Recordset.MoveNext
      If Data1.Recordset.EOF Then
         MsgBox "您要删除的用户可能已经删除了！！！"
         Text1.Text = ""
         Text1.SetFocus
         Exit Sub
      End If
Wend

'删除用户

Data1.Recordset.Delete
MsgBox "删除用户成功！！！"
Text1.Text = ""
Text1.SetFocus
End Sub

Private Sub Form_Load()
If flag = 2 Then
 Label1.ToolTipText = "您无权删除!"
 Text1.ToolTipText = "您无权删除!"
 End If
End Sub

Private Sub Text1_KeyPress(KeyAscii As Integer)
If KeyAscii = 13 Then
  Call cmdok_Click
End If
End Sub