frmmodifyclassinfo.frm

学生信息管理系统

      Top             =   660
      Width           =   450
   End
   Begin VB.Label Label3 
      Alignment       =   2  'Center
      AutoSize        =   -1  'True
      Caption         =   "班主任"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   210
      Left            =   1335
      TabIndex        =   5
      Top             =   1395
      Width           =   705
   End
   Begin VB.Label Label4 
      AutoSize        =   -1  'True
      Caption         =   "教室"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   210
      Left            =   3960
      TabIndex        =   4
      Top             =   1395
      Width           =   450
   End
End
Attribute VB_Name = "frmModifyclassinfo"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim mrc As ADODB.Recordset
Dim myBookmark As Variant
Dim mcclean As Boolean


Private Sub cancelCommand_Click()
    If Not mcclean Then
        txtClassno.Enabled = False
        comboGrade.Enabled = False
        txtDirector.Enabled = False
        txtClassroom.Enabled = False
        
        Frame2.Enabled = True
        firstCommand.Enabled = True
        previousCommand.Enabled = True
        nextCommand.Enabled = True
        lastCommand.Enabled = True
    
        editCommand.Enabled = True
        updateCommand.Enabled = False
        cancelCommand.Enabled = False
        deleteCommand.Enabled = True
       
        mrc.Bookmark = myBookmark
        Call viewData
    Else
        MsgBox "什么都没有修改，有什么好取消的！", vbOKOnly + vbExclamation, "警告"
    End If
End Sub

Private Sub deleteCommand_Click()
   ' Call Form_Load
    If mrc.RecordCount <> 1 Then
        myBookmark = mrc.Bookmark
        str2$ = MsgBox("是否删除当前记录？", vbOKCancel, "删除当前记录")
        If str2$ = vbOK Then
            mrc.MoveNext
            If mrc.EOF Then
                mrc.MoveFirst
                myBookmark = mrc.Bookmark
                mrc.MoveLast
                mrc.Delete
                mrc.Bookmark = myBookmark
                Call viewData
            Else
                myBookmark = mrc.Bookmark
                mrc.MovePrevious
                mrc.Delete
                mrc.Bookmark = myBookmark
                Call viewData
            End If
        End If
        Frame2.Enabled = True
        firstCommand.Enabled = True
        previousCommand.Enabled = True
        nextCommand.Enabled = True
        lastCommand.Enabled = True
    
        editCommand.Enabled = True
        updateCommand.Enabled = False
        cancelCommand.Enabled = False
        deleteCommand.Enabled = True

    Else
        mrc.Delete
        MsgBox "最后一条纪录已被删除！", vbOKOnly + vbExclamation, "警告"
        Unload Me
    End If
End Sub

Private Sub editCommand_Click()
    mcclean = False
        
'    txtClassno.Enabled = True
    comboGrade.Enabled = True
    txtDirector.Enabled = True
    txtClassroom.Enabled = True
    
    Frame2.Enabled = False
    firstCommand.Enabled = False
    previousCommand.Enabled = False
    nextCommand.Enabled = False
    lastCommand.Enabled = False
    
    editCommand.Enabled = False
    updateCommand.Enabled = True
    cancelCommand.Enabled = True
    deleteCommand.Enabled = False

    myBookmark = mrc.Bookmark
End Sub

Private Sub firstCommand_Click()
    mrc.MoveFirst
    Call viewData
End Sub


Private Sub Form_Load()
    Dim txtSQL As String
    Dim MsgText As String
    
    txtClassno.Enabled = False
    comboGrade.Enabled = False
    txtDirector.Enabled = False
    txtClassroom.Enabled = False
    
    Frame2.Enabled = True
    firstCommand.Enabled = True
    previousCommand.Enabled = True
    nextCommand.Enabled = True
    lastCommand.Enabled = True
    
    editCommand.Enabled = True
    updateCommand.Enabled = False
    cancelCommand.Enabled = False
    deleteCommand.Enabled = True
    
    txtSQL = "select * from class_Info "
    Set mrc = ExecuteSQL(txtSQL, MsgText)
    If mrc.EOF = False Then
        mrc.MoveFirst
        Call viewData
        myBookmark = mrc.Bookmark
        mcclean = True
    End If
    
    comboGrade.AddItem "大学一年级"
    comboGrade.AddItem "大学二年级"
    comboGrade.AddItem "大学三年级"
  
End Sub

Public Sub viewData()
        txtClassno.Text = mrc.Fields(0)
        comboGrade.Text = mrc.Fields(1)
        txtDirector.Text = mrc.Fields(2)
        txtClassroom.Text = mrc.Fields(3)
End Sub

Private Sub lastCommand_Click()
    mrc.MoveLast
    Call viewData
End Sub

Private Sub nextCommand_Click()
    mrc.MoveNext
    If mrc.EOF Then
        mrc.MoveFirst
    End If
    Call viewData
End Sub

Private Sub previousCommand_Click()
    mrc.MovePrevious
    If mrc.BOF Then
        mrc.MoveLast
    End If
    Call viewData
End Sub

Private Sub updateCommand_Click()
    Dim txtSQL As String
    Dim MsgText As String
    
    If mcclean Then
        MsgBox "请先修改班级信息", vbOKOnly + vbExclamation, "警告"
        Exit Sub
    End If
    
    If Not Testtxt(txtClassno.Text) Then
        MsgBox "请输入班号！", vbOKOnly + vbExclamation, "警告"
        txtClassno.SetFocus
        Exit Sub
    End If
    
    If Not IsNumeric(Trim(txtClassno.Text)) Then
        MsgBox "请输入数字！", vbOKOnly + vbExclamation, "警告"
        Exit Sub
        txtClassno.SetFocus
    End If
    
        
    If Not Testtxt(comboGrade.Text) Then
        MsgBox "请选择年级！", vbOKOnly + vbExclamation, "警告"
        comboGrade.SetFocus
        
        Exit Sub
    End If
    
    If Not Testtxt(txtDirector.Text) Then
        MsgBox "请输入班主任姓名！", vbOKOnly + vbExclamation, "警告"
        txtDirector.SetFocus
        Exit Sub
    End If
    
    
    If Not Testtxt(txtClassroom.Text) Then
        MsgBox "请输入教室号码！", vbOKOnly + vbExclamation, "警告"
        txtClassroom.SetFocus
        Exit Sub
    End If

'    mrc.Delete
'    mrc.AddNew
    mrc.Fields(0) = Trim(txtClassno.Text)
    mrc.Fields(1) = Trim(comboGrade.Text)
    mrc.Fields(2) = Trim(txtDirector.Text)
    mrc.Fields(3) = Trim(txtClassroom.Text)
    mrc.Update
    MsgBox "修改班级信息成功！", vbOKOnly + vbExclamation, "警告"
'    mrc.Bookmark = myBookmark
    Call viewData
    
    txtClassno.Enabled = False
    comboGrade.Enabled = False
    txtDirector.Enabled = False
    txtClassroom.Enabled = False
                    
    Frame2.Enabled = True
    firstCommand.Enabled = True
    previousCommand.Enabled = True
    nextCommand.Enabled = True
    lastCommand.Enabled = True
    
    editCommand.Enabled = True
    updateCommand.Enabled = False
    cancelCommand.Enabled = False
    deleteCommand.Enabled = True
    
    mcclean = True
End Sub