以文本方式查看主题 - Foxtable(狐表) (http://foxtable.net/bbs/index.asp) -- 专家坐堂 (http://foxtable.net/bbs/list.asp?boardid=2) ---- [求助]导入execl出错 (http://foxtable.net/bbs/dispbbs.asp?boardid=2&id=146154) |
-- 作者:天一生水 -- 发布时间:2020/2/17 20:54:00 -- [求助]导入execl出错 老师好! 以[报告号]为标识列导入execl数据,提示“调用的对象是空的”,如图,经测试,代码在加黑处报错。 测试的execl,是从foxtable数据导出的execl。 请老师帮助看看是哪里的问题? 谢谢! 代码如下: If DataTables.Contains("复核表") = False Then DataTables.Load("复核表") End If DataTables("复核表").Loadtop = "" DataTables("复核表").Loadpage = 0 DataTables("复核表").LoadFilter = "复核人 = \'" & User.Name & "\'" \'sql数据库#改为\' DataTables("复核表").Load Dim dt As DataTable = DataTables("复核表") 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;*.xlsx" dlg.MultiSelect = True \'允许选择多个文件 If dlg.ShowDialog =DialogResult.OK Then Dim App As New MSExcel.Application try Dim Wb As MSExcel.WorkBook = App.WorkBooks.Open(dlg.FileName) Dim Ws As MSExcel.WorkSheet = Wb.WorkSheets(1) wb.saved = True Dim Rg As MSExcel.Range = Ws.UsedRange Dim ary = rg.value dt.ResumeRedraw() dt.StopRedraw() \'systemready = False Dim nms As New Dictionary(Of String, Integer) Dim dic As new Dictionary(Of Integer,DataRow) Dim ls As new List(Of Integer) For c As Integer = 1 To Rg.Columns.count If dt.DataCols.Contains(ary(1,c).replace(" ", "")) Then nms.Add(ary(1,c).replace(" ", ""), c) End If Next Dim flag As Boolean = True For n As Integer = 2 To Rg.Rows.count Dim bgh As String = ary(n,nms("报告号")) If bgh = "" Then Continue For Dim dr As DataRow = dt.Find("报告号 = \'" & bgh & "\'") If dr IsNot Nothing Then Result = MessageBox.Show("有重复报告号,是否覆盖导入?"& vbcrlf &"是---覆盖导入"& vbcrlf &"否---新增导入", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) If Result = DialogResult.Yes Then flag = True Else flag = False End If Exit For End If Next For n As Integer = 2 To Rg.Rows.count Dim bgh As String = ary(n,nms("报告号")) If bgh = "" Then Continue For Dim dr As DataRow = dt.Find("报告号 = \'" & bgh & "\'") If dr Is Nothing Then dic.Add(n,Nothing) ElseIf flag = True dic.Add(n,dr) End If Next For Each l As Integer In dic.Keys Dim ndr As DataRow If dic(l) Is Nothing Then ndr = dt.AddNew Else ndr = dic(l) End If For Each m As String In nms.keys If dt.DataCols(m).IsBoolean Then If ary(l,nms(m))= "" OrElse ary(l,nms(m))= "False" OrElse ary(l,nms(m))= 0 Then ndr (m) = False Else ndr (m) = True End If Else If dt.DataCols(m).Expression > "" Then \'表达式列 Else If dt.DataCols(m).IsNumeric Then ndr (m) = val(ary(l,nms(m))) Else If dt.DataCols(m).IsDate Then Dim d As Date If Date.TryParse(ary(l,nms(m)), d) ndr (m) = d End If Else ndr (m) = ary(l,nms(m)) End If Next Next dt.ResumeRedraw() Dim n1,n2 As Integer For Each l As Integer In dic.Keys Dim ndr As DataRow If dic(l) Is Nothing Then \'ndr = dt.AddNew n1+= 1 Else ndr = dic(l) n2+= 1 End If Next msgbox("新增" & n1 & " " & "更新旧数据" & n2) app.quit \'systemready = True catch ex As exception msgbox(ex.message) app.quit End try End If End If |
-- 作者:有点蓝 -- 发布时间:2020/2/17 21:02:00 -- 看不出什。再调试定位到某一句代码,然后看这时是哪列哪个单元格的值 |