主题：textbox问题

Dim nd As String = "2018"
Dim yf As String = "七月"
Dim kh As String = "abc"
Dim filter As String = "1=1"
If nd > "" AndAlso yf > "" Then
    Dim ary() = {"一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二"}
    Dim d As Date = new Date(nd, ary.Indexof(ary, yf.trim("月"))+1, 1)
    filter &= " and 日期 >= #" & d & "# and 日期 < #" & d.addmonths(1) & "#"
End If
If kh > "" Then
    filter &= " and 客户 = '" & kh & "'"
End If
msgbox(filter)
'然后写compute查询各个表数据
'Dim sum As Double = DataTables("表A").compute("sum(金额)", filter)

红色改成你订单主表的日期列的列名

 

filter &= " and 日期 >= #" & d & "# and 日期 < #" & d.addmonths(1) & "#"

把【编程基础】和【Foxtable编程】这2章内容，完整过几遍

按5楼的方式改呀，还有什么问题？