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---- [求助]导入Excel (http://foxtable.com/bbs/dispbbs.asp?boardid=2&id=170578)
-- 发布时间：2021/7/31 10:20:00
-- [求助]导入Excel
老师好！把数据表改成了分页加载，然后把导入Excel代码中的find，改成了sqlfind，结果 覆盖方式导入时不起作用了。需要怎样修改代码？
谢谢！
\'\'\'
Dim dt As DataTable = DataTables("数据表")
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 stt As Date = Date.Now \'开始计时
\'systemready = False
For Each fl As String In dlg.FileNames
Dim App As New MSExcel.Application
try
Dim Wb As MSExcel.WorkBook = App.WorkBooks.Open(fl)
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()
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(" ", "")) AndAlso ary(1,c) <> "法院" Then \'法院列不导入
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 sfzhm As String = ary(n,nms("案号"))
If sfzhm = "" Then Continue For
Dim dr As DataRow = dt.sqlFind("案号 = \'" & sfzhm & "\'")
If dr IsNot Nothing Then
Result = MessageBox.Show(FileSys.GetName(fl).split(".")(0) & vbcrlf &"有重复案号,是否覆盖导入?" & vbcrlf & "是---覆盖导入(将更新原有案号数据)"& vbcrlf &"否---新增导入(仅增加新案号数据)", "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 sfzhm As String = ary(n,nms("案号"))
If sfzhm = "" Then Continue For
Dim dr As DataRow = dt.sqlFind("案号 = \'" & sfzhm & "\'")
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
Next
End If
End If
DataTables("数据表").Save()
-- 发布时间：2021/7/31 10:43:00
--
如果选择多个文件，导入一个文件就马上保存
Else
ndr (m) = ary(l,nms(m))
End If
Next
Next
dt.save
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
-- 发布时间：2021/7/31 13:02:00
--
还是没有覆盖更新，请老师测试实例。
-- 发布时间：2021/7/31 14:01:00
--
逐行保存
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
ndr.save
Next
dt.ResumeRedraw()