主题：[求助]根据多列内容生成筛选树节点如何显示人数统计

For Each s As String In DataTables("员工信息").GetValues("户籍地")
    If s = Nothing Then
        Dim c = DataTables("员工信息").compute("count(_Identify)", "户籍地 is null")
        n.Nodes.Add(s, s & "(" & c & ")")
    Else
        Dim c = DataTables("员工信息").compute("count(_Identify)", "户籍地='" & s & "'")
        n.Nodes.Add(s, s & "(" & c & ")")
    End If
Next