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---- 导入更新，但有新数据不会自动追加。如何修改代码 (http://foxtable.com/bbs/dispbbs.asp?boardid=2&id=141716)
-- 发布时间：2019/10/9 15:22:00
-- 导入更新，但有新数据不会自动追加。如何修改代码
老师好，下面代码，如果商品ID有值，导入的EXCL数据会自动更新狐表软件的数据。但如果导入新数据，如何实现狐表数据新增?
代码更新数据能实现，但有新数据无法新增，请问代码如何修改?商品ID列是表达式列=_indentify
Dim dt As DataTable = DataTables("rs_productinfo")
Dim nus() As String = {"proclass", "probrand", "probar","procode","proname","momunit","sonunit","unitno","sourcetype","prospecs","timesafe","prostate","checkbar","proid"} \'要导出的列名
Dim caps() As String = {"分类","品牌","箱码","商品编码","商品名称","母码单位","子码单位","溯源因子","溯源类型","规格","保质期","商品状态","瓶码","商品ID"} \'对应excl的列标题
Dim Result As DialogResult
Result = MessageBox.Show("确定要导入吗?", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question)
If Result = DialogResult.Yes Then
Dim dlg As New OpenFileDialog
dlg.Filter = "Excel文件|*.xls"
dlg.MultiSelect = True \'允许选择多个文件
If dlg.ShowDialog =DialogResult.OK Then
Dim Book As New XLS.Book(dlg.FileName)
Dim Sheet As XLS.Sheet = Book.Sheets("Sheet1")
dt.ResumeRedraw()
dt.StopRedraw()
\'systemready = False
Dim nms As New Dictionary(Of String, Integer)
Dim dic As new Dictionary(Of DataRow, Integer)
Dim ls As new List(Of Integer)
For c As Integer = 0 To sheet.Cols.Count - 1
If sheet(0,c).Text.replace(" ", "") > "" Then
\'If dt.DataCols.Contains(sheet(0,c).Text.replace(" ", "")) Then
nms.Add(sheet(0,c).Text.replace(" ", ""), c)
\'End If
End If
Next
For n As Integer = 1 To Sheet.Rows.Count -1
Dim sfzhm As String = sheet(n,nms("商品ID")).Text
If sfzhm = "" Then Continue For
Dim dr As DataRow = dt.Find("proid = \'" & sfzhm & "\'")
If dr Is Nothing Then
ls.add(n)
Else
dic.Add(dr, n)
End If
Next
For Each key As DataRow In dic.Keys
For Each m As String In nms.keys
Dim idx As Integer = array.Indexof(caps, m)
If idx >= 0 Then
Dim cname As String = nus(idx)
If dt.DataCols(cname).IsBoolean Then
If Sheet(dic(key),nms(m)).Text = "" OrElse Sheet(dic(key),nms(m)).Text = "False" OrElse Sheet(dic(key),nms(m)).Value = 0 Then
key(cname) = False
Else
key(cname) = True
End If
Else If dt.DataCols(cname).Expression > "" Then
\'表达式列
Else If dt.DataCols(cname).IsNumeric Then
key(cname) = val(Sheet(dic(key),nms(m)).Value)
Else If dt.DataCols(cname).IsDate Then
Dim d As Date
If Date.TryParse(Sheet(dic(key),nms(m)).Value, d)
key(cname) = d
End If
Else
key(cname) = Sheet(dic(key),nms(m)).Value
End If
End If
Next
Next
For Each l As Integer In ls
Dim ndr As DataRow = dt.AddNew
For Each m As String In nms.keys
Dim idx As Integer = array.Indexof(caps, m)
If idx >= 0 Then
Dim cname As String = nus(idx)
If dt.DataCols(cname).IsBoolean Then
If Sheet(l,nms(m)).Text = "" OrElse Sheet(l,nms(m)).Text = "False" OrElse Sheet(l,nms(m)).Value = 0 Then
ndr (cname) = False
Else
ndr (cname) = True
End If
Else If dt.DataCols(cname).Expression > "" Then
\'表达式列
Else If dt.DataCols(cname).IsNumeric Then
ndr (m) = val(Sheet(l,nms(m)).Value)
Else If dt.DataCols(cname).IsDate Then
Dim d As Date
If Date.TryParse(Sheet(l,nms(m)).Value, d)
ndr (cname) = d
End If
Else
ndr (cname) = Sheet(l,nms(m)).Value
End If
End If
Next
Next
dt.ResumeRedraw()
MessageBox.Show("导入成功")
\'systemready = True
End If
End If
-- 发布时间：2019/10/9 15:53:00
--
用Excel的数据更新foxtable现有数据的代码，比简单地将将Excel数据添加到狐表，前者不是更复杂吗？
你能写出以上复杂的代码，做一些变通调整不至于不会啊。
更新和新增数据，帮助都有例子：
http://www.foxtable.com/webhelp/topics/2334.htm
-- 发布时间：2019/10/9 22:26:00
--
此主题相关图片如下：微信截图_20191009222149.png
老师我导入的excl里如果有“商品ID”的值是狐表数据没有的，提示如上图错误。
如果“商品ID”的值都是狐表数据里面的，则相同“商品ID”更新
如果“商品ID”为空，这不执行导入操作。
1楼的代码如何修改，能够达到，“商品ID”的值为空或狐表没有此数据，狐表自动增加行，并导入新的数据。
-- 发布时间：2019/10/9 22:37:00
--
帮助：
其中有个例子，如果存在相同编号的订单，则覆盖原来的订单，否则新增一个订单，代码为：
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
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()
如果要改为：如果编号为空，不执行操作，如果存在相同编号的订单，则覆盖原来的订单，否则新增一个订单，代码稍作调整即可：
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
if bn = "" Then
Continue for
End if
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()
End If
For m As Integer = 0 To nms.Length - 1
dr(nms(m)) = Sheet(n,m).Value
Next
Next
Tables("订单").ResumeRedraw()
代码并不复杂，自己体会消化。
[此贴子已经被作者于2019/10/9 22:37:41编辑过]