frmdel2.frm

用VB实现的一个学生管理系统

VERSION 5.00
Begin VB.Form frmdel2 
   BackColor       =   &H00FFFFFF&
   BorderStyle     =   1  'Fixed Single
   Caption         =   "删除学生成绩"
   ClientHeight    =   1710
   ClientLeft      =   45
   ClientTop       =   435
   ClientWidth     =   3165
   ControlBox      =   0   'False
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   1710
   ScaleWidth      =   3165
   Begin VB.ComboBox coblesson 
      Height          =   300
      Left            =   1800
      TabIndex        =   3
      Text            =   "coblesson"
      Top             =   720
      Width           =   1215
   End
   Begin VB.TextBox txtID 
      Height          =   330
      Left            =   1785
      TabIndex        =   2
      Top             =   240
      Width           =   1230
   End
   Begin VB.CommandButton CmdOK 
      Caption         =   "确认删除"
      Default         =   -1  'True
      Height          =   420
      Left            =   240
      TabIndex        =   1
      Top             =   1200
      Width           =   1050
   End
   Begin VB.CommandButton CmdQuit 
      Cancel          =   -1  'True
      Caption         =   "返回"
      Height          =   420
      Left            =   1905
      TabIndex        =   0
      Top             =   1200
      Width           =   1050
   End
   Begin VB.Label Label2 
      BackColor       =   &H00FFFFFF&
      Caption         =   "请选择课程："
      Height          =   240
      Left            =   240
      TabIndex        =   5
      Top             =   720
      Width           =   1185
   End
   Begin VB.Label Label1 
      BackColor       =   &H00FFFFFF&
      Caption         =   "请输入学号："
      Height          =   240
      Left            =   240
      TabIndex        =   4
      Top             =   240
      Width           =   1185
   End
End
Attribute VB_Name = "frmdel2"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private sk4 As String
Private sk5 As String

Private Sub cmdQuit_Click()
Unload Me

End Sub

Private Sub Form_Load()
Me.Height = 2190
Me.Width = 3255
Me.Move (Screen.Width - Me.Width) / 2, (Screen.Height - Me.Height) / 2 - 800
'lesson
Set adoRS = adoCon.Execute("Select 课程名称 From Lesson Order By 课程名称")
coblesson.Clear
Do While Not adoRS.EOF
  coblesson.AddItem Trim(adoRS("课程名称"))
  adoRS.MoveNext
Loop
coblesson.ListIndex = 0
Me.Show
txtID.SetFocus
End Sub
Private Sub CmdOK_Click()
Dim sCon As String
If txtID.Text = "" Then
   txtID.Text = "请输学号"
   txtID.SelStart = 0
   txtID.SelLength = Len(txtID.Text)
   txtID.SetFocus
   Exit Sub
End If

sCon = "select * from score where 学号='" & txtID.Text & "' and 课程='" & coblesson.Text & "'"
Set adoRS = adoCon.Execute(sCon)
If adoRS.EOF Then
   MsgBox "对不起，查无此学生的" & Trim(coblesson.Text) & "成绩，请执行系统查询功能，" _
          & vbCrLf & vbCrLf & "确认要删除的学号或课程后再进行删除。", _
          vbInformation + vbOKOnly, "系统提示"
   txtID.SetFocus
   
   txtID.SelStart = 0
   txtID.SelLength = Len(txtID.Text)
   Exit Sub
Else
   sk4 = Trim(txtID.Text)
   sk5 = Trim(coblesson.Text)
   If MsgBox("学号：" & sk4 & vbCrLf & "课程名称：" & sk5 & vbCrLf & "确实要删除吗？", vbQuestion + vbYesNo, "系统提示") = vbYes Then
   sCon = "delete from score where 学号='" & sk4 & "' and 课程='" & sk5 & "'"
   Set adoRS = adoCon.Execute(sCon)
MsgBox "删除成功！", vbOKOnly, "系统提示"
   Unload Me
   End If
End If
End Sub