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  1. #1
    Join Date
    Feb 2009

    filter a subform based on multiple multi select list boxes

    Hi Everyone and many thanks for your time.. I am trying to begin access and a bit of VBA i am enjoying it but I have a annoying problem I just can’t get any where on.
    My databse mostly includes bits of code for different examples. I have one last thing to finish.
    I am trying to create a search form that will allow users to select criteria from multiple sources eg ,multi select list boxes , combo boxes.

    I have a subform showing all the required fields under the reports Tab of my main form. It’s unfiltered to begin and shows all records, when the user searches the form via the unbound controls listed above I have one error that I can’t figure out. It’s regarding my multi select list boxes.

    I have 3 multi select list boxes that allow the user to search for counties, nationality’s or qualifications and then filter the subform to show results via my “Build filter” function .

    County and nationality searches work fine with but when the user searches for qualification the form filters and shows the results which is great but right away but they are asked for the parameter for tblMemberqualifications.qualCode. even though its just filtered the suborm with the selected criteria.

    If i enter the value for “qualcode” lets say 417 the form will work as desired. If i don’t enter the value i get the error message Run time error 2467 “ the expression you entered refers to an object that is closed our doesn’t exist”.

    I think it maybe to do with the filtering on the main form “Me.RecordsetClone”. There is a similar subform search page under one of my main form Tab’s that uses the method below and works fine.

    I think that “.txtGoToRecord” was a hidden text box that holds the current record for the filter but for the life of me i cant find it anywhere on the main form. I can only see it mentioned under parts 2 and 3 of my code.

    Thanks or all your time and your help is greatly appreciated .
    Kind regards all the way from Ireland. Thanks again. JAMES.

    1 Filter
      Private Sub btnSearch_Click()
       Me.Filter = BuildFilter
              Me.FilterOn = True
              If Me.CurrentRecord = 1 Then
                  Forms!frmdcd.Filter = BuildFilter
                  Forms!frmdcd.FilterOn = True
                  Dim rst As Object
                  Set rst = Me.RecordsetClone
                  On Error Resume Next
                  On Error GoTo 0
                  Forms!frmdcd.txtGoToRecord.Value = Me.CurrentRecord
                  Me.lblRF.Caption = "Records Found = " & rst.RecordCount
                  Me.lblRF.Visible = True
                  Forms!frmdcd.FilterOn = False
                  Me.lblRF.Caption = "Records Found = 0"
                  Me.lblRF.Visible = True
                  Forms!frmdcd.txtGoToRecord.Value = ""
                  Me.FilterOn = True
              'DoCmd.GoToRecord acDataForm, "frmDCD", acFirst
              End If
     Private Sub Form_Load()
      DoCmd.MoveSize Right:=300, down:=300, Width:=18300, Height:=14000
      Me.txtGoToRecord.Value = Me.RegNumber.Value
      Me!frmChooseRegister.Visible = True
      Me!frmChooseRegistrationType.Visible = False
      Me!frmChooseSpecialistRegister.Visible = False
      Me!frmSpecRegType.Visible = False
      Me!frmFullQualFrom.Visible = False
      Me!frmNursesApp.Visible = False
      Me!frmTempReg.Visible = False
      Me!frmRestDentist.Visible = False
      Me!frmRestNurse.Visible = False
      Me!frmSpecRegFull.Visible = False
      Me!frmHygienistRegType.Visible = False
      Me!frmHygienistQual.Visible = False
      Me!frmRestSpecialist.Visible = False
      Me!frmRestHygienist.Visible = False
      Me!frmHygienistIrishUKApp.Visible = False
      Me!frmHygienistEEAApp.Visible = False
      Me!frmIrishQual.Visible = False
      Me!frmEEANonEEAQual.Visible = False
      Me!frmNursesRegType.Visible = False
      Me!frmNursesQual.Visible = False
      Me!frmEEAQual.Visible = False
      Me!frmSpecRegQuals.Visible = False
      Me!frmPassedExam.Visible = False
      'Me!frmNewRegistration.Visible = False
      'Me!frmStartScreen.Visible = True
      Me!TabCtl1.Visible = True
      End Sub
     Private Sub TxtGoToRecord_AfterUpdate()
      Dim C As Integer
      s = txtGoToRecord.Value
      C = DMax("RegNumber", "tblMemberDetails")
      If txtGoToRecord.Value > 0 And txtGoToRecord.Value < C + 2 Then
      DoCmd.GoToRecord acDataForm, "frmDCD", acGoTo, txtGoToRecord.Value
      End If
      End Sub
    4.My Search filter
     Private Function BuildFilter() As Variant
          Dim varWhere As Variant
          Dim varItem As Variant
          Dim intIndex As Integer
          Dim CountyCode As Variant
          Dim NationalityCode As Variant
          Dim QualCode As Variant
          varWhere = Null  ' Main filter
          CountyCode = Null  ' Subfilter used for CountyCode
          NationalityCode = Null ' Subfilter used for NationalityCode
          QualCode = Null ' Subfilter used for qualCode
          ' Check for LIKE First Name
      If Me.txtFirstName > "" Then
              varWhere = varWhere & "[FirstName] LIKE """ & Me.txtFirstName & "*"" AND "
          End If
          ' Check for LIKE Last Name
          If Me.txtSurname > "" Then
              varWhere = varWhere & "[surname] LIKE """ & Me.txtSurname & "*"" AND "
          End If
          If Me.txtRegNumber > "" Then
              varWhere = varWhere & "[regnumber] like """ & Me.txtRegNumber & """  And "
         End If
        ' Check for county in multiselect list
          For Each varItem In Me.lstCountyCode.ItemsSelected
              CountyCode = CountyCode & " [tblMemberDetails].[CountyCode] = """ & _
                          Me.lstCountyCode.ItemData(varItem) & """ OR "
         'Test to see if we have subfilter for colors...
          If IsNull(CountyCode) Then
              ' do nothing
              ' strip off last "OR" in the filter
              If Right(CountyCode, 4) = " OR " Then
                  CountyCode = Left(CountyCode, Len(CountyCode) - 4)
              End If
              'Add some parentheses around the subfilter
              varWhere = varWhere & "( " & CountyCode & " ) AND "
          End If
            ' Qual Code
          For Each varItem In Me.lstqual1.ItemsSelected
              QualCode = QualCode & " [tblMemberQualifications].[qualCode] = " & _
                          Me.lstqual1.ItemData(varItem) & " OR "
          'Test to see if we have subfilter for colors...
          If IsNull(QualCode) Then
              ' do nothing
              ' strip off last "OR" in the filter
              If Right(QualCode, 4) = " OR " Then
                  QualCode = Left(QualCode, Len(QualCode) - 4)
              End If
              'Add some parentheses around the subfilter
              varWhere = varWhere & "( " & QualCode & " ) and "
          End If
              ' Check for Nationality in multiselect list
          For Each varItem In Me.lstNationality.ItemsSelected
              NationalityCode = NationalityCode & " [tblmemberdetails].[NationalityCode] = """ & _
                          Me.lstNationality.ItemData(varItem) & """ OR "
          'Test to see if we have subfilter for colors...
          If IsNull(NationalityCode) Then
              ' do nothing
              ' strip off last "OR" in the filter
              If Right(NationalityCode, 4) = " OR " Then
                  NationalityCode = Left(NationalityCode, Len(NationalityCode) - 4)
              End If
              'Add some parentheses around the subfilter
              varWhere = varWhere & "( " & NationalityCode & " )  "
          End If
       'Check if there is a filter to return...
          If IsNull(varWhere) Then
              varWhere = "''"
              ' strip off last "AND" in the filter
              If Right(varWhere, 5) = " AND " Then
                  varWhere = Left(varWhere, Len(varWhere) - 5)
              End If
                            End If
          BuildFilter = varWhere
          End Function

  2. #2
    Join Date
    Feb 2009
    Fixed Now thanks.
    I was missing the qualcode field in my main frm. As soon as i added it to the record source of my main form it works.

    Thanks again for your time and expertise its hugely appericated.

    Thanks and best of luck in the future.

    Kind regaeds,


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