Private Sub cmdFilter_Click()
'Purpose: Build up the criteria string form the non-blank search boxes, and apply to the form's Filter.
'Notes: 1. We tack " AND " on the end of each condition so you can easily add more search boxes; _
we remove the trailing " AND " at the end.
' 2. The date range works like this: _
Both dates = only dates between (both inclusive. _
Start date only = all dates from this one onwards; _
End date only = all dates up to (and including this one).
Dim strWhere As String 'The criteria string.
Dim lngLen As Long 'Length of the criteria string to append to.
Const conJetDate = "\#mm\/dd\/yyyy\#" 'The format expected for dates in a JET query string.
'***********************************************************************
'Look at each search box, and build up the criteria string from the non-blank ones.
'***********************************************************************
'Text field example. Use quotes around the value in the string.
'This was the original code using a text box *********
' If Not IsNull(Me.txtFilterCity) Then
' strWhere = strWhere & "([City] = """ & Me.txtFilterCity & """) AND "
' End If
'**********************
'This is with the text box changed to a list box. It's working but only when listbox is not multiselect
' If Not IsNull(Me.lstFilterCity) Then
' strWhere = strWhere & "([City] = """ & Me.lstFilterCity & """) AND "
' End If
'*********************
' This is trying to adapt the code from "http://www.baldyweb.com/multiselect.htm" without success
'Produces a runtime error
Dim ctl As Control
Dim varItem As Variant
'add selected values to string
Set ctl = Me.lstFilterCity
For Each varItem In ctl.ItemsSelected
strWhere = strWhere & ctl.ItemData(varItem) & ","
'Use this line if your value is text
'strWhere = strWhere & "'" & ctl.ItemData(varItem) & "',"
Next varItem
'trim trailing comma
strWhere = Left(strWhere, Len(strWhere) - 1)
'********************************
'Another text field example. Use Like to find anywhere in the field.
If Not IsNull(Me.txtFilterMainName) Then
strWhere = strWhere & "([MainName] Like ""*" & Me.txtFilterMainName & "*"") AND "
End If
'Number field example. Do not add the extra quotes.
If Not IsNull(Me.cboFilterLevel) Then
strWhere = strWhere & "([LevelID] = " & Me.cboFilterLevel & ") AND "
End If
'Yes/No field and combo example. If combo is blank or contains "ALL", we do nothing.
If Me.cboFilterIsCorporate = -1 Then
strWhere = strWhere & "([IsCorporate] = True) AND "
ElseIf Me.cboFilterIsCorporate = 0 Then
strWhere = strWhere & "([IsCorporate] = False) AND "
End If
'Date field example. Use the format string to add the # delimiters and get the right international format.
If Not IsNull(Me.txtStartDate) Then
strWhere = strWhere & "([EnteredOn] >= " & Format(Me.txtStartDate, conJetDate) & ") AND "
End If
'Another date field example. Use "less than the next day" since this field has times as well as dates.
If Not IsNull(Me.txtEndDate) Then 'Less than the next day.
strWhere = strWhere & "([EnteredOn] < " & Format(Me.txtEndDate + 1, conJetDate) & ") AND "
End If
'***********************************************************************
'Chop off the trailing " AND ", and use the string as the form's Filter.
'***********************************************************************
'See if the string has more than 5 characters (a trailng " AND ") to remove.
lngLen = Len(strWhere) - 5
If lngLen <= 0 Then 'Nah: there was nothing in the string.
MsgBox "No criteria", vbInformation, "Nothing to do."
Else 'Yep: there is something there, so remove the " AND " at the end.
strWhere = Left$(strWhere, lngLen)
'For debugging, remove the leading quote on the next line. Prints to Immediate Window (Ctrl+G).
'Debug.Print strWhere
'Finally, apply the string as the form's Filter.
Me.Filter = strWhere
Me.FilterOn = True
End If
End Sub
