运用ActiveX组件技术创建通用的查询控件

根 据 用 户 的 选 择 建 立 查 询 字 符 串, 并 引 发GetSelectionSql 事 件 返 回 字 符 串; 单 击" 取 消" 时, 关 闭 查 询 窗 体。

Private Sub Command1_Click(Index As Integer)
    Select Case Index
        Case 0 注释：确定
SelectionSql = " WHERE "
For i = 0 To Check1.Count - 1
     If Check1(i).Value = 1 Then
         If SelectionSql <  > " WHERE " Then
  If Option1((i - 1) * 2) Then
      SelectionSql = SelectionSql & " AND "
  Else
      SelectionSql = SelectionSql & " OR "
  End If
         End If  
         If Combo1(i * 3) <  > "" Then
  SelectionSql = SelectionSql & Combo1(i * 3)  
         Else
  SelectionSql = ""
  MsgBox "该项还未设值!", 64, "查询条件:"
  Combo1(i * 3).SetFocus
  Exit Sub
         End If  
         If Combo1(i * 3 + 1) <  > "" Then
  SelectionSql = SelectionSql & " " & Combo1(i * 3 + 1) _ & " "
         Else
  SelectionSql = ""
  MsgBox "该项还未设值!", 64, "查询条件:"
  Combo1(i * 3 + 1).SetFocus
  Exit Sub
         End If  
         SelectionSql = SelectionSql _
    & CheckType(rs(Combo1(i * 3).Text).Type, _ Combo1(i * 3 + 2))
     End If
Next i  
If SelectionSql = " WHERE " Then SelectionSql = ""
If Check2.Value = 1 Then
     MsgBox "SelectionSql = " & SelectionSql , 64, "查询字符串:"
End If
RaiseEvent GetSelectionSql(SelectionSql)
Unload Parent
        Case 1 注释：取消
Unload Parent
    End Select
End Sub

---- (7) 自 定 义 过 程: 给 左 列 组 合 框 置 值- 表 的 列 名 。

Private Sub LoadCboLeft(ByVal Cbo As ComboBox)
    If rs.EOF And rs.BOF Then
MsgBox Tablename & "表中无记录!", 64, "查询条件:"
        Exit Sub
    End If
    rs.MoveFirst    
    For i = 0 To rs.Fields.Count - 1
        Cbo.AddItem rs(i).Name
    Next
   &nb