Bpk sepertinya default value masing2 check box blm di set ke 0 ya? Tapi tdk 
diset juga tdk apa2, Bpk langsung ganti saja menjadi:

Private Sub cmd_simpan_Click()
DoCmd.RunCommand acCmdRefreshPage
If (Me!CheckBox1 = 0 Or IsNull(Me!CheckBox1)) And (Me!CheckBox2 = 0 Or 
IsNull(Me!CheckBox2)) And (Me!CheckBox3 = 0 Or IsNull(Me!CheckBox3)) And 
(Me!CheckBox4 = 0 Or IsNull(Me!CheckBox4)) And (Me!CheckBox5 = 0 Or 
IsNull(Me!CheckBox5)) And (Me!CheckBox6 = 0 Or IsNull(Me!CheckBox6)) And 
(Me!CheckBox7 = 0 Or IsNull(Me!CheckBox7)) Then
MsgBox "Data Pendukung Anda Belum Lengkap"
Exit Sub
Else
MsgBox "Data berhasil disimpan."
End If
End Sub

Thank's
  ----- Original Message ----- 
  From: Andi Junianto 
  To: [email protected] 
  Sent: Tuesday, 16 February 2010 6:30 PM
  Subject: Re: [belajar-access] Waning pada check box [1 Attachment]


    
  [Attachment(s) from Andi Junianto included below]
   

  Berikut saya sertakan semua prosedure yang saya buat pda form sya
  Dan juga saya sertakan gambar form di attachment



  Option Compare Database
  Private Sub List70_AfterUpdate()
      ' Find the record that matches the control.
      Dim rs As Object

      Set rs = Me.Recordset.Clone
      rs.FindFirst "[ID_PELANGGAN] = '" & Me![List70] & "'"
      If Not rs.EOF Then Me.Bookmark = rs.Bookmark
  End Sub


  Private Sub cmd_tambah_Click()
  On Error GoTo Err_cmd_tambah_Click
      DoCmd.GoToRecord , , acNewRec

  Exit_cmd_tambah_Click:
      Exit Sub

  Err_cmd_tambah_Click:
      MsgBox Err.Description
      Resume Exit_cmd_tambah_Click
      
  End Sub
  Private Sub cmd_simpan_Click()
  DoCmd.RunCommand acCmdRefreshPage
  If Me!CheckBox1 = 0 And Me!CheckBox2 = 0 And Me!CheckBox3 = 0 And 
Me!CheckBox4 = 0 And Me!CheckBox5 = 0 And Me!CheckBox6 = 0 And Me!CheckBox7 = 0 
Then
  MsgBox "Data Pendukung Anda Belum Lengkap"
  Exit Sub
  End If

  On Error GoTo Err_cmd_simpan_Click


      DoCmd.RunCommand acCmdSaveRecord

  Exit_cmd_simpan_Click:
      Exit Sub

  Err_cmd_simpan_Click:
      MsgBox Err.Description
      Resume Exit_cmd_simpan_Click
      
  End Sub
  Private Sub Combo79_AfterUpdate()
      ' Find the record that matches the control.
      Dim rs As Object

      Set rs = Me.Recordset.Clone
      rs.FindFirst "[ID_PELANGGAN] = '" & Me![Combo79] & "'"
      If Not rs.EOF Then Me.Bookmark = rs.Bookmark
  End Sub

  Private Sub Combo81_AfterUpdate()
      ' Find the record that matches the control.
      Dim rs As Object

      Set rs = Me.Recordset.Clone
      rs.FindFirst "[ID_PELANGGAN] = '" & Me![Combo81] & "'"
      If Not rs.EOF Then Me.Bookmark = rs.Bookmark
  End Sub
  Private Sub cmd_hapus_Click()
  On Error GoTo Err_cmd_hapus_Click


      DoCmd.RunCommand acCmdSelectRecord
      DoCmd.RunCommand acCmdDeleteRecord

  Exit_cmd_hapus_Click:
      Exit Sub

  Err_cmd_hapus_Click:
      
      Resume Exit_cmd_hapus_Click
      
  End Sub
  Private Sub cmd_keluar_Click()
  On Error GoTo Err_cmd_keluar_Click


      If Me.Dirty Then Me.Dirty = False
      DoCmd.Close

  Exit_cmd_keluar_Click:
      Exit Sub

  Err_cmd_keluar_Click:
      MsgBox Err.Description
      Resume Exit_cmd_keluar_Click
      
  End Sub

  Private Sub DAYA_Enter()
  Me.DAYA.Dropdown
  End Sub


  Private Sub LEMARI_Enter()
  Me.LEMARI.Dropdown
  End Sub


  Private Sub RAK_Enter()
  Me.RAK.Dropdown
  End Sub

  Private Sub RUANG_Enter()
  Me.RUANG.Dropdown
  End Sub

  Dalam form tersebut saya letakkan rumus yang anda berikan pada simpan, tetapi 
tetap tidak jalan
  yang sya inginkan bila saya tekan tombol simpan maka akan dicek terlebih 
dahulu dan apabila salah satu checkbox yang saya inginkan tidak tercentang akan 
keluar warning
  Nama Form : Arsip Induk Langganan
  Nama Checkbox : checkbox1 s/d checkbox7








------------------------------------------------------------------------------
  From: Belajar Office <[email protected]>
  To: [email protected]
  Sent: Tuesday, February 16, 2010 14:10:29
  Subject: Re: [belajar-access] Waning pada check box

    
   

  Bpk, pastikan default value seluruh field check box adalah 0 (false). 
Sebenarnya saya ingin Bpk copy paste procedure yg sudah Bpk buat, karena saya 
jadinya hanya meraba2 dari sini, nama form, nama check box, desain table, dll 
mungkin baiknya di tuliskan. Bpk coba set perintah tsb pada suatu tombol di 
event on click, misal:

  Private Sub Command1_Click( )
  DoCmd.RunCommand acCmdRefreshPage
  If Me!checkbox1 = 0 And Me!checkbox2 = 0 And Me!checkbox3 = 0 And 
Me!checkbox4 = 0 And Me!checkbox5 = 0 And Me!checkbox6 = 0 And Me!checkbox7 = 0 
And Me!checkbox8 = 0 And Me!checkbox9 = 0 And Me!checkbox10 = 0 And 
Me!checkbox11 = 0 And Me!checkbox12 = 0 And Me!checkbox13 = 0 And Me!checkbox14 
= 0 Then
  MsgBox "Data Anda Belum Lengkap"
  Exit Sub
  End If
  End Sub

  Thank's
    ----- Original Message ----- 
    From: Andi Junianto 
    To: belajar-access@ yahoogroups. com 
    Sent: Tuesday, 16 February 2010 1:57 PM
    Subject: Re: [belajar-access] Waning pada check box


      

    Perintah tersebut diletakkan pada checkbok atau yang lain, karena udah sya 
cba taruh d form dan di masing2 check box g bisa juga 
    mohon bantunnya






----------------------------------------------------------------------------
    From: Belajar Office <belajaroffice@ gmail.com>
    To: belajar-access@ yahoogroups. com
    Sent: Tuesday, February 16, 2010 8:34:36
    Subject: Re: [belajar-access] Waning pada check box

      

    Bpk, barangkali bisa tambahkan If dipadu dengan And, misal:

    if me!checkbox1=0 and me!checkbox2=0 and me!checkbox3=0 and me!checkbox4=0 
and me!checkbox5=0 and me!checkbox6=0 and me!checkbox7=0 and me!checkbox8=0 and 
me!checkbox9=0 and me!checkbox10=0 and me!checkbox11=0 and me!checkbox12=0 and 
me!checkbox13=0 and me!checkbox14=0 then
    msgbox "Data Anda Belum Lengkap"
    exit sub
    end if

    Thank's
      ----- Original Message ----- 
      From: Andi 
      To: belajar-access@ yahoogroups. com 
      Sent: Monday, 15 February 2010 12:46 PM
      Subject: [belajar-access] Waning pada check box


        
      Saya ingin tanya pada senior2 access nih
      saya membuat sebuah form yang isinya ada beberapa (14)  pilihan centang 
(check box) yang datanya diambil dari data tabel berupa Yes/No. Saya 
menginginkan pada saat dijalankan bila tidak memilih salah satu item chekbox 
maka akan kelauar warning "Data Anda Belum Lengkap" 
      Bagaimana caranya tolong bantuan secepatnya




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