ComboBox 对象 (Access)

时　间:2022-07-09 09:34:01
作　者:杨雪   ID：42182  城市：南京
摘　要:此对象对应于一个组合框控件。 组合框控件兼具文本框和列表框的功能。 如果您希望用户既可以键入值又可以从预定义列表中选择值，则可使用组合框。
正　文:

以下示例演示如何使用多个“组合框”控件，以提供查询条件。

Private Sub cmdSearch_Click()
    Dim db As Database
    Dim qd As QueryDef
    Dim vWhere As Variant
    
    Set db = CurrentDb()
    
    On Error Resume Next
    db.QueryDefs.Delete "Query1"
    On Error GoTo 0
    
    vWhere = Null
    vWhere = vWhere & " AND [PymtTypeID]=" & Me.cboPaymentTypes
    vWhere = vWhere & " AND [RefundTypeID]=" & Me.cboRefundType
    vWhere = vWhere & " AND [RefundCDMID]=" & Me.cboRefundCDM
    vWhere = vWhere & " AND [RefundOptionID]=" & Me.cboRefundOption
    vWhere = vWhere & " AND [RefundCodeID]=" & Me.cboRefundCode
    
    If Nz(vWhere, "") = "" Then
        MsgBox "There are no search criteria selected." & vbCrLf & vbCrLf & _
        "Search Cancelled.", vbInformation, "Search Canceled."
        
    Else
        Set qd = db.CreateQueryDef("Query1", "Select * FROM tblRefundData Where " & _
        Mid(vWhere, 6))
        
        db.Close
        Set db = Nothing
        
        DoCmd.OpenQuery "Query1", acViewNormal, acReadOnly
    End If
End Sub