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Private Sub Form_Load()
  Dim s(0 To 4) As String
  Dim N As Integer, i As Integer
  s(0) = "²âÊÔ1"
  s(1) = "²âÊÔ2"
  s(2) = "²âÊÔ3"
  s(3) = "²âÊÔ4"
  s(4) = "²âÊÔ5"
  N = 4
  For i = 0 To N
    'ÔÚÑ­»·ÌåÖУ¬Æóͼ¸Ä±äÑ­»·ÖÕÖ¹±äÁ¿Ê¹Ö®ÌáǰÍ˳öÑ­»·ÊÇͽÀ͵ġ£
    'Ö»ÓÐ Åжϡ¾Ñ­»·±äÁ¿¡¿ÊÇ·ñ´óÓÚ¡¾Ñ­»·ÖÕÖ¹±äÁ¿¡¿À´ÌáǰÍ˳ö²ÅÊÇ¿ÉÐеģ¬È磺If i > N Then Exit For
    Debug.Print s(i)
    If i = 0 Or i = 3 Then N = N - 1
  Next i
  MsgBox "i====" & i & " N==" & N
End Sub


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    If MSComm1.PortOpen = True Then MSComm1.PortOpen = False
    MSComm1.CommPort = i1
    MSComm1.PortOpen = True
    MSComm1.InputMode = comInputModeBinary
    MSComm1.InBufferCount = 0
& ......

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Private Sub Command1_Click()
   
    Dim MyComm As New ADODB.Command      '¶¨ÒåÒ»¸öÃüÁî¶ÔÏó
    Dim Rs_GetList As New ADODB.Recordset '¶¨ÒåÒ»¸ö¼Ç¼¼¯¶ÔÏó
    Dim param As ADODB.Parameter     ......

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Imports System.Data.OleDb
    Inherits System.Windows.Forms.Form
   Dim myconnection As New OleDbConnection("provider=microsoft.jet.oledb.4.0;data source=" & Application.StartupPath & "\student0.mdb") ‘------------------------- Á´½ÓÊý¾Ý¿â
    ......
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