frmuser.frm

大学数据库原理的课程设计

VERSION 5.00
Object = "{67397AA1-7FB1-11D0-B148-00A0C922E820}#6.0#0"; "MSADODC.OCX"
Begin VB.Form frmUser 
   BorderStyle     =   1  'Fixed Single
   Caption         =   "添加用户"
   ClientHeight    =   2415
   ClientLeft      =   3210
   ClientTop       =   2730
   ClientWidth     =   4350
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   2415
   ScaleWidth      =   4350
   Begin VB.CommandButton cmdOk 
      Caption         =   "确认"
      Default         =   -1  'True
      Height          =   312
      Left            =   660
      TabIndex        =   8
      Top             =   1920
      Width           =   1455
   End
   Begin VB.CommandButton cmdExit 
      Caption         =   "退出"
      Height          =   312
      Left            =   2220
      TabIndex        =   7
      Top             =   1920
      Width           =   1455
   End
   Begin VB.Frame Frame1 
      Appearance      =   0  'Flat
      ForeColor       =   &H80000008&
      Height          =   1635
      Left            =   240
      TabIndex        =   0
      Top             =   120
      Width           =   3855
      Begin VB.TextBox txtPassword2 
         Height          =   264
         IMEMode         =   3  'DISABLE
         Left            =   1560
         PasswordChar    =   "*"
         TabIndex        =   3
         Top             =   1080
         Width           =   1935
      End
      Begin VB.TextBox txtPassword1 
         Height          =   264
         IMEMode         =   3  'DISABLE
         Left            =   1560
         PasswordChar    =   "*"
         TabIndex        =   2
         Top             =   720
         Width           =   1935
      End
      Begin VB.TextBox txtUserName 
         Height          =   264
         Left            =   1560
         TabIndex        =   1
         Top             =   360
         Width           =   1935
      End
      Begin VB.Label Label3 
         AutoSize        =   -1  'True
         Caption         =   "请确认密码"
         Height          =   180
         Left            =   420
         TabIndex        =   6
         Top             =   1125
         Width           =   900
      End
      Begin VB.Label Label2 
         AutoSize        =   -1  'True
         Caption         =   "请输入密码"
         Height          =   180
         Left            =   420
         TabIndex        =   5
         Top             =   765
         Width           =   900
      End
      Begin VB.Label Label1 
         AutoSize        =   -1  'True
         Caption         =   "请输入用户名"
         Height          =   180
         Left            =   240
         TabIndex        =   4
         Top             =   405
         Width           =   1080
      End
   End
   Begin MSAdodcLib.Adodc Adodc1 
      Height          =   315
      Left            =   2880
      Top             =   2160
      Visible         =   0   'False
      Width           =   1455
      _ExtentX        =   2566
      _ExtentY        =   556
      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         =   "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Stud97.mdb;Persist Security Info=False"
      OLEDBString     =   "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Stud97.mdb;Persist Security Info=False"
      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
End
Attribute VB_Name = "frmUser"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
'添加用户窗体frmUser
Option Explicit

Private Sub cmdExit_Click()
    Unload Me
End Sub

Private Sub cmdOk_Click() '确认
    '检查各文本框是否为空
    If Trim$(txtUserName.Text) = "" Then
        MsgBox "请输入用户名！", vbExclamation
        txtUserName.SetFocus
        Exit Sub
    End If
    If Trim$(txtPassword1.Text) = "" Then
        MsgBox "请输入密码！", vbExclamation
        txtPassword1.SetFocus
        Exit Sub
    End If
    If Trim$(txtPassword2.Text) = "" Then
        MsgBox "请确认密码！", vbExclamation
        txtPassword2.SetFocus
        Exit Sub
    End If
    '检查两次输入密码是否一致
    If Trim$(txtPassword1.Text) <> Trim$(txtPassword2.Text) Then
        MsgBox "确认密码错误，请重新输入！", vbExclamation
        With txtPassword2
            .SetFocus
            .SelStart = 0
            .SelLength = Len(.Text)
        End With
        Exit Sub
    End If
    'SQL语句作为ADO控件的记录源
    Adodc1.RecordSource = "SELECT * FROM 用户 WHERE 用户名='" & txtUserName.Text & "'"
    Adodc1.Refresh
    With Adodc1.Recordset
        If .BOF Then '检查是否有同名用户，若无，添加，若有，重新输入
            .AddNew
            .Fields(0) = Trim$(txtUserName.Text)
            .Fields(1) = Trim$(txtPassword1.Text)
            .Fields(2) = "普通" '默认权限为普通用户
            .Update
            MsgBox "添加用户成功！", vbInformation
        Else
            MsgBox "此用户已存在！", vbExclamation
            With txtUserName    '焦点返回用户框
                .SetFocus
                .SelStart = 0
                .SelLength = Len(.Text)
            End With
            Exit Sub
        End If
    End With
End Sub

Private Sub Form_Unload(Cancel As Integer) '窗体卸载时
    frmMain.Show
End Sub