主题：求助 加载树

 Dim Filter As String
If e.node.Text = "加载所有数据" Then
    Filter = ""
Else
    Dim dr As DataRow = e.Node.DataRow
    Select Case e.Node.Level
        Case 0
            Filter ="[报岗类型] = '" & dr("报岗类型") & "'" 我想在语句中加入按上报时间倒序，怎么添加。
        Case 1
            Filter ="[报岗类型] = '" & dr("报岗类型") & "' And [报岗站] = '" & dr("报岗站") & "'"
    End Select
End If
DataTables("报岗").LoadFilter = Filter
DataTables("报岗").Load()