login.frm

挺不错的图书管理系统`自己弄的` 界面很好看的`

VERSION 5.00
Begin VB.Form login 
   Caption         =   "图书管理系统"
   ClientHeight    =   3405
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   4920
   BeginProperty Font 
      Name            =   "华文琥珀"
      Size            =   9
      Charset         =   134
      Weight          =   400
      Underline       =   0   'False
      Italic          =   0   'False
      Strikethrough   =   0   'False
   EndProperty
   LinkTopic       =   "Form2"
   MaxButton       =   0   'False
   ScaleHeight     =   3405
   ScaleWidth      =   4920
   StartUpPosition =   2  '屏幕中心
   Begin VB.CommandButton Command2 
      Caption         =   "取消"
      BeginProperty Font 
         Name            =   "华文行楷"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   2640
      TabIndex        =   3
      Top             =   2160
      Width           =   1095
   End
   Begin VB.CommandButton Command1 
      Caption         =   "确定"
      BeginProperty Font 
         Name            =   "华文行楷"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   1080
      TabIndex        =   2
      Top             =   2160
      Width           =   1095
   End
   Begin VB.TextBox txtpwd 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   9
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      IMEMode         =   3  'DISABLE
      Left            =   2160
      PasswordChar    =   "*"
      TabIndex        =   1
      Top             =   1440
      Width           =   1815
   End
   Begin VB.TextBox txtuser 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   9
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   2160
      TabIndex        =   0
      Top             =   840
      Width           =   1815
   End
   Begin VB.Label Label3 
      Alignment       =   2  'Center
      BackStyle       =   0  'Transparent
      Caption         =   "系统登陆窗口"
      BeginProperty Font 
         Name            =   "华文行楷"
         Size            =   15
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   1080
      TabIndex        =   6
      Top             =   240
      Width           =   2655
   End
   Begin VB.Label Label2 
      BackColor       =   &H80000013&
      BackStyle       =   0  'Transparent
      Caption         =   "密码"
      BeginProperty Font 
         Name            =   "华文行楷"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H80000007&
      Height          =   375
      Left            =   1200
      TabIndex        =   5
      Top             =   1440
      Width           =   615
   End
   Begin VB.Label Label1 
      BackColor       =   &H8000000A&
      BackStyle       =   0  'Transparent
      Caption         =   "用户名"
      BeginProperty Font 
         Name            =   "华文行楷"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00000000&
      Height          =   375
      Left            =   1080
      TabIndex        =   4
      Top             =   960
      Width           =   735
   End
   Begin VB.Image Image1 
      Height          =   7200
      Left            =   -480
      Picture         =   "login.frx":0000
      Top             =   0
      Width           =   5475
   End
End
Attribute VB_Name = "login"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Dim cnt As Integer

Private Sub Command1_Click()
Dim sql As String
Dim rs_login As New ADODB.Recordset
If Trim(txtuser.Text) = "" Then
   MsgBox "没有这个用户", vbOKOnly + vbExclamation, ""
   txtuser.SetFocus
Else
   sql = "select * from 系统管理 where 用户名='" & txtuser.Text & "'"
   rs_login.Open sql, conn, adOpenKeyset, adLockPessimistic
   If rs_login.EOF = True Then
      MsgBox "用户不存在", vbOKOnly + vbExclamation, ""
      txtuser.SetFocus
   Else
      If Trim(rs_login.Fields(1)) = Trim(txtpwd.Text) Then
          userID = txtuser.Text
          userpow = rs_login.Fields(2)
          rs_login.Close
          Unload Me
          Form1.Show
         
      Else
         MsgBox "密码不正确", vbOKOnly + vbExclamation, ""
         txtpwd.SetFocus
      End If
   End If
End If
cnt = cnt + 1
If cnt = 3 Then
   Unload Me
End If
Exit Sub
End Sub

Private Sub Command2_Click()
Unload Me
End Sub

Private Sub Form_Load()


Dim connectionstring As String
connectionstring = "Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=图书管理系统"
conn.Open connectionstring
cnt = 0
 

'Image1.Picture = LoadPicture("e:\my pictures\517_351_11675794220q1228.gif")


End Sub