主题：[求助]筛选树

Dim Filter As String = ""
If e.node.Name <> "显示所有行" Then
    Dim d1 As Date
    Dim d2 As Date
    Dim Year As Integer = e.Node.DataRow("年")
    Dim Month As Integer = e.Node.DataRow("月")
    Dim Product As String = e.Node.DataRow("产品")
    Select Case e.Node.Level
        Case 0
            filter = "产品 = '" & Product & "'"
        Case 1
            d1 = New Date(Year,1,1) '取得该年的第一天
            d2 = new Date(Year,12,31) '取得该年的最后一天
            Filter = "产品 = '" & Product & "' and 日期 >= #" & d1 & "# And 日期 <= #" & d2 & "#"
        Case 2
            d1 = New Date(Year, Month, 1) '取得该月的第一天
            d2 = new Date(Year, Month, Date.DaysInMonth(Year,Month)) '取得该月的最后一天
            Filter = "产品 = '" & Product & "' and 日期 >= #" & d1 & "# And 日期 <= #" & d2 & "#"
    End Select
End If
Tables("订单").Filter = Filter