登录.frm

学生信息管理系统,实现对学生信息的管理

VERSION 5.00
Begin VB.Form Form_Login 
   BorderStyle     =   1  'Fixed Single
   Caption         =   "登录"
   ClientHeight    =   3225
   ClientLeft      =   45
   ClientTop       =   330
   ClientWidth     =   5295
   Icon            =   "登录.frx":0000
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   3225
   ScaleWidth      =   5295
   StartUpPosition =   2  '屏幕中心
   Begin VB.CommandButton Command2 
      Caption         =   "退出"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   3240
      TabIndex        =   7
      Top             =   2520
      Width           =   1215
   End
   Begin VB.CommandButton Command1 
      Caption         =   "登录"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   840
      TabIndex        =   6
      Top             =   2520
      Width           =   1215
   End
   Begin VB.ComboBox Combo1 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   360
      Left            =   2040
      TabIndex        =   5
      Text            =   "Combo1"
      Top             =   1680
      Width           =   1695
   End
   Begin VB.TextBox Text2 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      IMEMode         =   3  'DISABLE
      Left            =   2040
      PasswordChar    =   "*"
      TabIndex        =   4
      Text            =   "Text2"
      Top             =   1080
      Width           =   1695
   End
   Begin VB.TextBox Text1 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   2040
      TabIndex        =   3
      Text            =   "Text1"
      Top             =   480
      Width           =   1695
   End
   Begin VB.Label Label3 
      Caption         =   "身份："
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   1320
      TabIndex        =   2
      Top             =   1680
      Width           =   735
   End
   Begin VB.Label Label2 
      Caption         =   "密码："
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   1320
      TabIndex        =   1
      Top             =   1080
      Width           =   735
   End
   Begin VB.Label Label1 
      Caption         =   "用户名："
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   1080
      TabIndex        =   0
      Top             =   480
      Width           =   855
   End
End
Attribute VB_Name = "Form_Login"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim myCon As New ADODB.Connection
Dim myRs As New ADODB.Recordset
Dim zong As Integer
Private Sub Command1_Click()
Dim sqldl As String
Dim sf As String
If zong = 3 Then
    Unload Me
    Exit Sub
End If
 
myCon.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=信息.mdb;"
If Trim(Text1.Text = "") Then
    MsgBox "没有输入用户名,请输入!", vbOKOnly + vbExclamation, "警告"
    Text1.SetFocus
    Text2.Text = ""
    myCon.Close
    zong = zong + 1
    Exit Sub
End If


sqldl = "select * from 用户资料 where 用户名='" & Text1.Text & "' "
myRs.Open sqldl, myCon

If myRs.EOF = True Then
    MsgBox "没有这个用户,请重新输入用户名!", vbOKOnly + vbExclamation, "警告"
    Text1.SetFocus
    Text1.Text = ""
    Text2.Text = ""
    myRs.Close
    myCon.Close
    zong = zong + 1
    Exit Sub
End If

If myRs.Fields("密码") <> Trim(Text2.Text) Then
    MsgBox "密码不正确,请重新输入!", vbOKOnly + vbExclamation, "警告"
    Text2.SetFocus
    myRs.Close
    myCon.Close
    zong = zong + 1
    Exit Sub
End If
 
If myRs.Fields("身份") <> Combo1.Text Then
    MsgBox "身份不正确,请重新选择!", vbOKOnly + vbExclamation, "警告"
    Combo1.SetFocus
    myRs.Close
    myCon.Close
    zong = zong + 1
    Exit Sub
End If
    
sf = myRs.Fields("身份")
myRs.Close
myCon.Close
XingMing = Text1.Text
Unload Me
MDIForm_XSGL.Show

If sf = "管理员" Then
    MDIForm_XSGL.m1.Enabled = True
    admin = 1
Else
    MDIForm_XSGL.m11.Enabled = False

    MDIForm_XSGL.m2.Enabled = False
    MDIForm_XSGL.m4.Enabled = False
    admin = 0
End If

End Sub

Private Sub Command2_Click()
Dim anw As Integer
anw = MsgBox("确定要退出系统吗？", vbYesNo, "请问")
If anw = 6 Then
    Unload Me
Else
    Text1.Text = ""
    Text2.Text = ""
    Text1.SetFocus
End If
End Sub

Private Sub Form_Load()
    zong = 0
    Text1.Text = ""
    Text2.Text = ""
    Combo1.Text = ""
    Combo1.AddItem ("管理员")
    Combo1.AddItem ("用户")
    
End Sub

Private Sub Text1_KeyDown(KeyCode As Integer, Shift As Integer)
If KeyCode = 13 Then
    Text2.SetFocus
End If
End Sub