修改成绩信息.frm

学生管理系统

VERSION 5.00
Begin VB.Form 成绩信息 
   Caption         =   "Form1"
   ClientHeight    =   4560
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   5460
   LinkTopic       =   "Form1"
   ScaleHeight     =   4560
   ScaleWidth      =   5460
   StartUpPosition =   3  '窗口缺省
   Begin VB.Frame Frame1 
      Caption         =   "Frame1"
      Height          =   1815
      Left            =   120
      TabIndex        =   6
      Top             =   2640
      Width           =   4815
      Begin VB.CommandButton Command3 
         Caption         =   "查询"
         Height          =   615
         Left            =   1920
         TabIndex        =   10
         Top             =   1080
         Width           =   1455
      End
      Begin VB.CommandButton Command1 
         Caption         =   "修改更新"
         Height          =   495
         Left            =   2040
         TabIndex        =   9
         Top             =   360
         Width           =   1215
      End
      Begin VB.CommandButton Command2 
         Caption         =   "退出 "
         Height          =   495
         Left            =   240
         TabIndex        =   8
         Top             =   240
         Width           =   1215
      End
      Begin VB.CommandButton Command4 
         Caption         =   "删除"
         Height          =   735
         Left            =   120
         TabIndex        =   7
         Top             =   960
         Width           =   1575
      End
   End
   Begin VB.TextBox Text1 
      Height          =   495
      Left            =   2040
      TabIndex        =   5
      Text            =   " "
      Top             =   1800
      Width           =   1335
   End
   Begin VB.ComboBox Combo2 
      Height          =   300
      Left            =   1920
      TabIndex        =   4
      Text            =   " "
      Top             =   1080
      Width           =   1455
   End
   Begin VB.ComboBox Combo1 
      Height          =   300
      Left            =   1920
      TabIndex        =   3
      Text            =   " "
      Top             =   240
      Width           =   1455
   End
   Begin VB.Label Label3 
      Caption         =   "成绩"
      Height          =   495
      Left            =   240
      TabIndex        =   2
      Top             =   1800
      Width           =   1335
   End
   Begin VB.Label Label2 
      Caption         =   "课程编号"
      Height          =   495
      Left            =   240
      TabIndex        =   1
      Top             =   960
      Width           =   1335
   End
   Begin VB.Label Label1 
      Caption         =   " 学号"
      Height          =   495
      Left            =   240
      TabIndex        =   0
      Top             =   240
      Width           =   1335
   End
End
Attribute VB_Name = "成绩信息"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False

Dim rs8 As New ADODB.Recordset
Private Sub Combo1_Click()
Dim rs15 As New ADODB.Recordset
rs15.Open "select * from 学生基本信息表 where 学号='" + Trim(Combo1.Text) + "'", cnn, 3, 1
End Sub

Private Sub Combo2_Change()
Dim rs105 As New ADODB.Recordset
rs105.Open "select * from 课程信息表 where 课程编号='" + Trim(Combo2.Text) + "'", cnn, 3, 1

 End Sub
Private Sub Command1_Click()
If rs8.State <> 0 Then rs8.Close
rs8.Open "select * from 成绩表 where 学号='" + Trim(Combo1.Text) + "'", cnn, 3, 3
rs8.Find "学号 like '" & (Combo1.Text) & "'"
If rs8.EOF Then
   MsgBox "没有此记录！"
   Text1 = ""
  
Else
rs8("成绩") = Trim(Text1)
rs8("课程编号") = Trim(Combo2.Text)
rs8.Update
rs8.Requery
MsgBox "更新成功！"
Combo1.Text = ""
Combo2.Text = ""
Text1 = ""
Combo1.SetFocus
End If
End Sub

Private Sub Command2_Click()
Me.Hide
End Sub
Private Sub Command3_Click()
If rs8.State <> 0 Then rs8.Close
rs8.Open "select* from 成绩表", cnn, 3, 1
rs8.Find "学号 like '" & Combo1.Text & "'"
If rs8.EOF Then
MsgBox "没有此记录！"
Combo1.Text = ""
Exit Sub
Else
Text1 = rs8("成绩")
Combo2.Text = rs8("课程编号")
End If
End Sub

Private Sub Command4_Click()
If rs8.State <> 0 Then rs8.Close
 rs8.Open "select * from 成绩表 where 学号='" + Trim(Combo1.Text) + "'", cnn, 3, 3
rs8.Find "学号 like '" & (Combo1.Text) & "'"
If rs8.EOF Then
   MsgBox ""
Else
rs8.Delete
rs8.Update
MsgBox "删除信息成功！"
Text1 = ""
Combo1.Text = ""
Combo2.Text = ""
End If
End Sub

Private Sub Form_Load()
Dim rs15 As New Recordset
rs15.Open "select * from 学生基本信息表", cnn, 3, 3
Do While Not rs15.EOF
Combo1.AddItem rs15("学号")
rs15.MoveNext
Loop
rs15.Close
rs15.Open "select * from 课程信息表", cnn, 3, 1
Do While Not rs15.EOF
Combo2.AddItem rs15("课程编号")
rs15.MoveNext
Loop
rs15.Close
End Sub