frmmodifycourseinfo.frm

学生信息管理系统

      Top             =   375
      Width           =   900
   End
   Begin VB.Label Label3 
      AutoSize        =   -1  'True
      Caption         =   "课程类型"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   0
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   210
      Left            =   360
      TabIndex        =   5
      Top             =   1200
      Width           =   900
   End
   Begin VB.Label Label4 
      AutoSize        =   -1  'True
      Caption         =   "课程描述"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   0
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   210
      Left            =   3480
      TabIndex        =   4
      Top             =   1200
      Width           =   900
   End
End
Attribute VB_Name = "frmModifycourseinfo"
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
        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
            
        txtCourseno.Enabled = False
        txtCoursename.Enabled = False
        comboCoursetype.Enabled = False
        txtCoursedes.Enabled = False
        
        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
    Else
        mrc.Bookmark = myBookmark
        Call viewData
    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
    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

        
'    txtCourseno.Enabled = True
    txtCoursename.Enabled = True
    comboCoursetype.Enabled = True
    txtCoursedes.Enabled = True
    
    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
    
    txtCourseno.Enabled = False
    txtCoursename.Enabled = False
    comboCoursetype.Enabled = False
    txtCoursedes.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 course_Info"
    Set mrc = ExecuteSQL(txtSQL, MsgText)
    If mrc.EOF = False Then
        mrc.MoveFirst
        Call viewData
        myBookmark = mrc.Bookmark
        mcclean = True
    End If
    
    comboCoursetype.AddItem "必修"
    comboCoursetype.AddItem "考查"

End Sub

Public Sub viewData()
    txtCourseno.Text = mrc.Fields(0)
    txtCoursename.Text = mrc.Fields(1)
    comboCoursetype.Text = mrc.Fields(2)
    txtCoursedes.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 "请先修改课程信息", vbOKOnly + vbExclamation, "警告"
        Exit Sub
    End If
    
    If Not Testtxt(txtCourseno.Text) Then
        MsgBox "请输入课程编号！", vbOKOnly + vbExclamation, "警告"
        txtCourseno.SetFocus
        Exit Sub
    End If
    
    If Not IsNumeric(Trim(txtCourseno.Text)) Then
        MsgBox "课程编号请输入数字！", vbOKOnly + vbExclamation, "警告"
        txtCourseno.SetFocus
        Exit Sub
    End If
    
    If Not Testtxt(txtCoursename.Text) Then
        MsgBox "请输入课程名称！", vbOKOnly + vbExclamation, "警告"
        txtCoursename.SetFocus
        Exit Sub
    End If
        
    If Not Testtxt(comboCoursetype.Text) Then
        MsgBox "请选择课程类型！", vbOKOnly + vbExclamation, "警告"
        comboCoursetype.SetFocus
        Exit Sub
    End If
    
    If Not Testtxt(txtCoursedes.Text) Then
        MsgBox "请输入课程描述信息！", vbOKOnly + vbExclamation, "警告"
        txtCoursedes.SetFocus
        Exit Sub
    End If
    
'    mrc.Delete
'    mrc.AddNew
    mrc.Fields(0) = Trim(txtCourseno.Text)
    mrc.Fields(1) = Trim(txtCoursename.Text)
    mrc.Fields(2) = Trim(comboCoursetype.Text)
    mrc.Fields(3) = Trim(txtCoursedes.Text)
    mrc.Update
    MsgBox "修改课程信息成功！", vbOKOnly + vbExclamation, "警告"
'    mrc.Bookmark = myBookmark
    Call viewData
    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
        
    txtCourseno.Enabled = False
    txtCoursename.Enabled = False
    comboCoursetype.Enabled = False
    txtCoursedes.Enabled = False
                
    mcclean = True
End Sub