- Foxtable(狐表) (http://foxtable.com/bbs/index.asp)
-- 专家坐堂 (http://foxtable.com/bbs/list.asp?boardid=2)
---- 删除行 (http://foxtable.com/bbs/dispbbs.asp?boardid=2&id=117334)
-- 发布时间：2018/4/10 20:49:00
-- 删除行
老师，在这个地方，怎样删除 DataTables("订单")中没有找到相同编号的行，也就是删除 Dr 行。
Dim Book As New XLS.Book("c:\\test\\订单.xls")
Dim Sheet As XLS.Sheet = Book.Sheets(0)
Tables("订单").StopRedraw()
Dim nms() As String = {"编号","产品","客户","雇员","单价","折扣","数量","日期"}
For n As Integer = 1 To Sheet.Rows.Count -1
Dim bh As String = sheet(n,0).Text
Dim dr As DataRow = DataTables("订单").Find("编号 = \'" & bh & "\'")
If dr Is Nothing Then \'如果不存在同编号的订单
Dim Sheet As XLS.Sheet = Book.Sheets(0)
Tables("订单").StopRedraw()
Dim nms() As String = {"编号","产品","客户","雇员","单价","折扣","数量","日期"}
For n As Integer = 1 To Sheet.Rows.Count -1
Dim bh As String = sheet(n,0).Text
Dim dr As DataRow = DataTables("订单").Find("编号 = \'" & bh & "\'")
If dr Is Nothing Then \'如果不存在同编号的订单
老师，在这个地方，怎样删除 DataTables("订单")中没有找到相同编号的行，也就是删除 Dr 行。
dr = DataTables("订单").AddNew()
End If
For m As Integer = 0 To nms.Length - 1
dr(nms(m)) = Sheet(n,m).Value
Next
Next
Tables("订单").ResumeRedraw()
-- 发布时间：2018/4/10 21:06:00
--
既然没有找到相同编号的行，也就是不存在这行，又何需删除？
-- 发布时间：2018/4/10 21:20:00
--
DataTables("订单") 中有这个编号的行，只不过在sheet中没有找到这个编号的行。我的意思是找到相同的编号就覆盖，没有找到就删除 DataTables("订单")的行。
-- 发布时间：2018/4/10 21:36:00
--
用个集合记录找到的行，然后删除剩下的
Dim Book As New XLS.Book("c:\\test\\订单.xls")
Dim Sheet As XLS.Sheet = Book.Sheets(0)
Tables("订单").StopRedraw()
Dim nms() As String = {"编号","产品","客户","雇员","单价","折扣","数量","日期"}
Dim lst As new List(of String)
For n As Integer = 1 To Sheet.Rows.Count -1
Dim bh As String = sheet(n,0).Text
Dim dr As DataRow = DataTables("订单").Find("编号 = \'" & bh & "\'")
If dr Is Nothing Then \'如果不存在同编号的订单
dr = DataTables("订单").AddNew()
Else
lst.Add(dr("编号"))
End If
For m As Integer = 0 To nms.Length - 1
dr(nms(m)) = Sheet(n,m).Value
Next
Next
DataTables("订单").DeleteFor("编号 not in (\'" & String.Join("\',\'",lst.ToArray) & "\')")
Tables("订单").ResumeRedraw()
-- 发布时间：2018/4/10 22:04:00
--
ok
[此贴子已经被作者于2018/4/10 22:04:19编辑过]