主题：[求助]execl导入时间列时只导入了日期部分

打扰老师中午休息了。

代码是覆盖已有记录的吗？我发现导入时有重复行，都是在导入后再清理一次。

田老师好！

8楼的代码还没有看明白，能否把8楼的代码加上对话窗口，选择“覆盖”或“新增”导入？

Dim Result As DialogResult
Result = MessageBox.Show("有重复案号,是否覆盖导入?", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question)
If Result = DialogResult.Yes  Then
    ...覆盖导入
Else
    ...新增导入
End If

谢谢！

新增导入，这样写；覆盖导入参考8楼

Dim dt As DataTable = DataTables("事务主表")
Dim Result As DialogResult
Result = MessageBox.Show("有重复案号,是否覆盖导入?", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question)
If Result = DialogResult.Yes Then
    '覆盖导入

Else
    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 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 DataRow, Integer)
            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
           
            For n As Integer = 2 To Rg.Rows.count
                ls.add(n)
            Next
           
            For Each l As Integer In ls
                Dim ndr As DataRow = dt.AddNew
                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()
           
            app.quit
            'systemready = True
        catch ex As exception
            msgbox(ex.message)
            app.quit
        End try
    End If
End If

谢谢田老师！

我想在导入前先判断有没有重复案号，如果有，就弹出提示对话框，选择覆盖或新增；如果没有，直接新增导入。需要怎样修改代码？

Dim dt As DataTable = DataTables("数据表")
Dim Result As DialogResult
Result = MessageBox.Show("请选择："& vbcrlf &"是---覆盖导入"& vbcrlf &"否---新增导入", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question)
If Result = DialogResult.Yes Then   
’--------------以下为覆盖导入
    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 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 DataRow, Integer)
            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
           
            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.Find("案号 = '" & 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
                    If dt.DataCols(m).IsBoolean Then
                        If ary(dic(key),nms(m)) = "" OrElse ary(dic(key),nms(m))= "False" OrElse ary(dic(key),nms(m)) = 0 Then
                            key(m) = False
                        Else
                            key(m) = True
                        End If
                    Else If dt.DataCols(m).Expression > "" Then
                        '表达式列
                    Else If dt.DataCols(m).IsNumeric Then
                        key(m) = val(ary(dic(key),nms(m)))
                    Else If dt.DataCols(m).IsDate Then
                        Dim d As Date
                        If Date.TryParse(ary(dic(key),nms(m)), d)
                            key(m) = d
                        End If
                       
                    Else
                        key(m) = ary(dic(key),nms(m))
                    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
                    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()
            msgbox("新增" & ls.count & "    " & "更新旧数据" & dic.count)
           
            'msgbox("新增了" & ls.count)
            'msgbox("覆盖了" & dic.count)
            app.quit
            'systemready = True
        catch ex As exception
            msgbox(ex.message)
            app.quit
        End try
    End If
End If

’------------------------------------以下为新增导入
Else
    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 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 DataRow, Integer)
            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
           
            For n As Integer = 2 To Rg.Rows.count
                ls.add(n)
            Next
           
            For Each l As Integer In ls
                Dim ndr As DataRow = dt.AddNew
                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()

            msgbox("新增" & ls.count）
            app.quit
            'systemready = True
        catch ex As exception
            msgbox(ex.message)
            app.quit
        End try
    End If
End If

学习

给老师添麻烦了，代码试了以后，发现我没表述明白。

我“新增导入”的意思是：导入时发现有重复“案号”，如果选择“新增导入”，那么，就导入原数据表中没有的“案号”数据。

谢谢蓝老师！

这样是可以在导入数据的时候选择覆盖或新增导入，但是并不知道待导入数据是否存在重复数据；

能否把红色代码加到16楼的代码中，这样就可以先判断待导入数据是否有重复行的情况后，再进行选择覆盖或新增的导入了。