主题：[求助]导入报错The given key was not present in the dictionary.

老师好！

今天单位的电脑，点击导入按钮时报错：The given key was not present in the dictionary.

是什么原因？运行的是开发好的项目，然后采用开发程序运行也是一样。

后来重装.net4.52，foxtable2021-5-29，office2010，也没有解决。请老师帮忙看一下。

 
此主题相关图片如下：截屏图片.jpg

导入代码：

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

        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"))

                    Dim ysah As String = ary(n,nms("原审案号"))
                    If sfzhm = "" OrElse ysah = "" Then Continue For
                    Dim dr As DataRow = dt.SQLFind("案号 = '" & sfzhm & "' and 原审案号 = '" & ysah & "'")

                    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"))

                    Dim ysah As String = ary(n,nms("原审案号"))
                    If sfzhm = "" OrElse ysah = "" Then Continue For
                    Dim dr As DataRow = dt.SQLFind("案号 = '" & sfzhm & "' and 原审案号 = '" & ysah & "'")

                    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
                       
                        Forms("运行提示").open()
                        Forms("运行提示").Controls("TextBox1").text = "当前文件：" & FileSys.GetName(fl).split(".")(0) & vbcrlf &  vbcrlf & "数据导入中......"    & vbcrlf &  vbcrlf & "共"  & Rg.Rows.count -1 &  "行" & vbcrlf & vbcrlf & "正在导入第"  & l &  "行：" & ndr("案号")
                    Next
                    ndr.save   '逐行保存
                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

                Forms("运行提示").Controls("TextBox1").text = "新增：" & n1 & vbcrlf &  vbcrlf &  "更新：" & n2 & vbcrlf & vbcrlf & "耗时：" & (Date.Now - stt).TotalSeconds & "秒"
               
                app.quit
                'systemready = True
            catch ex As exception
                msgbox(ex.message)
                app.quit
            End try
        Next
    End If
End If

DataTables("数据表").load()

蓝老师，我用开发后的项目测试了一下，把项目中的数据导出到Excel，然后用一楼的代码再导入，弹出“对象引用未设置为对象的实例”，开发后的项目怎么会出这样的问题？

重新安装office2013、AccessDatabaseEngine组件；打开开发项目，弹出找不到函数服务器时间和下图：