If e.Node.Text = "当天"
            Tables("tb_product").Filter = "[fx_orderdate] = #date.today# "

.NET Framework 版本：2.0.50727.42
Foxtable 版本：2013.6.28.1
错误所在事件：
详细错误信息：
The string was not recognized as a valid DateTime. There is a unknown word starting at index 0.

原完整代码：

Dim Value() As String
Value = e.Node.FullPath.Split("\\")
Select Case e.Node.Level
    Case 0
        If e.Node.Text = "显示所有行" Then
            Tables("tb_product").Filter = "[hasCancel]=false"
        ElseIf e.Node.Text = "当天"
            Tables("tb_product").Filter = "[fx_orderdate] = #date.today# "
        ElseIf e.Node.Text = "五日内"
            Tables("tb_product").Filter = "[fx_orderdate] >=#(date.todaya-5)# "
        ElseIf e.Node.Text = "十五日内"
           Tables("tb_product").Filter = "[fx_orderdate] >=#(date.todaya-15)# "
        End If
    Case 1
        Tables("tb_product").Filter = "[fx_orderdate] = \'" & Value(0) & "\' And [productname] = \'" & Value(1) & "\'"
End Select

正确的：

Tables("tb_product").Filter = "[fx_orderdate] = #“ & date.today & ”#"

关于合成表达式，您可以看看：

http://www.foxtable.com/help/topics/1284.htm

谢谢指点。