form5.frm

本软件界面友好

VERSION 5.00
Begin VB.Form Form5 
   Caption         =   "Form5"
   ClientHeight    =   3660
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   5325
   LinkTopic       =   "Form5"
   ScaleHeight     =   3660
   ScaleWidth      =   5325
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command2 
      Caption         =   "关闭"
      Height          =   375
      Left            =   1800
      TabIndex        =   10
      Top             =   2520
      Width           =   855
   End
   Begin VB.CommandButton Command1 
      Caption         =   "增加"
      Height          =   375
      Left            =   600
      TabIndex        =   9
      Top             =   2520
      Width           =   855
   End
   Begin VB.TextBox Text1 
      Height          =   270
      Left            =   960
      TabIndex        =   8
      Text            =   "0"
      Top             =   2040
      Width           =   1215
   End
   Begin VB.Frame Frame1 
      Caption         =   "增加学生成绩"
      Height          =   3375
      Left            =   120
      TabIndex        =   0
      Top             =   120
      Width           =   5055
      Begin VB.ComboBox Combo3 
         Height          =   300
         Left            =   840
         TabIndex        =   5
         Text            =   "Combo3"
         Top             =   1440
         Width           =   1215
      End
      Begin VB.ComboBox Combo2 
         Height          =   300
         ItemData        =   "Form5.frx":0000
         Left            =   840
         List            =   "Form5.frx":0002
         TabIndex        =   4
         Text            =   "Combo2"
         Top             =   960
         Width           =   1215
      End
      Begin VB.ComboBox Combo1 
         Height          =   300
         Left            =   840
         TabIndex        =   2
         Text            =   "选择班级"
         Top             =   480
         Width           =   1215
      End
      Begin VB.Label Label4 
         Caption         =   "成绩"
         Height          =   375
         Left            =   240
         TabIndex        =   7
         Top             =   1920
         Width           =   495
      End
      Begin VB.Label Label3 
         Caption         =   "科目"
         Height          =   255
         Left            =   240
         TabIndex        =   6
         Top             =   1440
         Width           =   495
      End
      Begin VB.Label Label2 
         Caption         =   "学号"
         Height          =   255
         Left            =   240
         TabIndex        =   3
         Top             =   960
         Width           =   495
      End
      Begin VB.Label Label1 
         Caption         =   "班级"
         Height          =   255
         Left            =   240
         TabIndex        =   1
         Top             =   480
         Width           =   375
      End
   End
End
Attribute VB_Name = "Form5"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Public conn As New ADODB.Connection
Public rs As New ADODB.Recordset


Private Sub Combo1_Click()
    '这个班级的学生学号
    Combo2.Clear
    Dim sql As String
    sql = "select 学号 from 学生基本信息 where 班级 = '" & Combo1.Text & "'"
    rs.Open sql, conn
    Do While Not rs.EOF
        Combo2.AddItem (rs("学号"))
        rs.MoveNext
    Loop
    rs.Close
    Set rs = Nothing
    '这个班级学生的科目
    sql = "select * from 成绩科目 where 班级ID = '" & Combo1.Text & "'"
    rs.Open sql, conn
    Do While Not rs.EOF
        Combo3.AddItem (rs("成绩科目"))
        rs.MoveNext
    Loop
    rs.Close
    Set rs = Nothing
End Sub

Private Sub Command1_Click()
    If Text1.Text = "" Then
        MsgBox "成绩不能为空"
    Else
        conn.Execute "insert into 学生成绩(成绩,学生ID,班级ID,科目ID) values(" & Text1.Text & ",'" & Combo2.Text & "','" & Combo1.Text & "','" & Combo3.Text & "')"
        MsgBox "成绩已经添加"
        Text1.Text = 0
    End If

End Sub

Private Sub Command2_Click()
    Me.Hide
End Sub

Private Sub Form_Load()
    conn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + App.Path + "\student.mdb;Persist Security Info=False"
    conn.Open
    rs.Open "select * from 班级", conn
    
    Do While Not rs.EOF
        Combo1.AddItem (rs("班级"))
        rs.MoveNext
    Loop
    rs.Close
    Set rs = Nothing

End Sub