form1.frm

学生选修课程管理系统的设计与实现 目 录 一、需求分析 2 1.1系统简要分析 2 1.2 应用需求分析 2 二、概要设计 4 2.1业务流分析 4 2.2数据流分析 4 2.3程

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "学生选课系统"
   ClientHeight    =   5580
   ClientLeft      =   2865
   ClientTop       =   1545
   ClientWidth     =   7065
   LinkTopic       =   "Form1"
   Picture         =   "Form1.frx":0000
   ScaleHeight     =   5580
   ScaleWidth      =   7065
   Begin VB.Data Data1 
      Caption         =   "Data1"
      Connect         =   "Access"
      DatabaseName    =   ""
      DefaultCursorType=   0  '缺省游标
      DefaultType     =   2  '使用 ODBC
      Exclusive       =   0   'False
      Height          =   375
      Left            =   1440
      Options         =   0
      ReadOnly        =   0   'False
      RecordsetType   =   1  'Dynaset
      RecordSource    =   ""
      Top             =   5040
      Visible         =   0   'False
      Width           =   3615
   End
   Begin VB.CommandButton CmdExit 
      Caption         =   "退出"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   3000
      TabIndex        =   8
      Top             =   4320
      Width           =   1095
   End
   Begin VB.CommandButton CmdLogin 
      Caption         =   "登录"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   1560
      TabIndex        =   7
      Top             =   4320
      Width           =   1095
   End
   Begin VB.TextBox TxtPass 
      Height          =   375
      IMEMode         =   3  'DISABLE
      Left            =   2160
      PasswordChar    =   "*"
      TabIndex        =   6
      Top             =   3600
      Width           =   2295
   End
   Begin VB.TextBox TxtNumber 
      Height          =   375
      Left            =   2160
      TabIndex        =   5
      Top             =   3000
      Width           =   2295
   End
   Begin VB.Label Label5 
      Caption         =   "密码"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   1200
      TabIndex        =   4
      Top             =   3720
      Width           =   615
   End
   Begin VB.Label Label4 
      Caption         =   "学号"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   1200
      TabIndex        =   3
      Top             =   3120
      Width           =   615
   End
   Begin VB.Label Label3 
      Caption         =   "请先登录"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   15.75
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   2640
      TabIndex        =   2
      Top             =   2400
      Width           =   1335
   End
   Begin VB.Label Label2 
      Caption         =   "学生选课系统"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   21.75
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   1920
      TabIndex        =   1
      Top             =   1320
      Width           =   2775
   End
   Begin VB.Label Label1 
      Caption         =   "欢 迎 进 入"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   21.75
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   2040
      TabIndex        =   0
      Top             =   600
      Width           =   2535
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False





Private Sub CmdExit_Click()
Unload Me
End Sub


Private Sub CmdLogin_Click()
Dim sql As String
If TxtNumber.Text <> "" And TxtPass.Text <> "" Then
        sql = "select * from 学生信息 where 学号=" & " '" & TxtNumber.Text & " '"
End If
   '连接数据库中的学生信息表
    Data1.DatabaseName = App.Path & "\db1.mdb"
    Data1.RecordSource = "select * from 学生信息 where 学号=" & " '" & TxtNumber.Text & " '"
    Data1.Refresh
    '判断该学生是否存在
    '如果不存在则给出提示信息
    '如果存在则进行其它操作
   If Data1.Recordset.EOF Then
      MsgBox ("对不起，您输入的学号不存在！请与管理员联系.")
      TxtNumber.Text = ""
      TxtPass.Text = ""
    Else
     If Data1.Recordset.Fields("密码") <> TxtPass.Text Then
       MsgBox ("密码输入错误，请重新输入!")
       'TxtNumber.Text = ""
       TxtPass.Text = ""
      Else
       Form1.Show
       MsgBox ("欢迎" & strStudentName & "欢迎使用选修课程管理系统" & Chr(13))
       TxtNumber.Text = ""
       TxtPass.Text = ""
       Unload Me
       FrmChoose.Show

     End If
   End If
End Sub