Question

我正面临一个我根本无法理解的问题。创建excel文件时，我有多列，并且在每列上我想格式化其单元格。到目前为止一切都很好，几乎所有这些都在工作，但是当我尝试格式化Date列时它根本不起作用。单元格格式完全忽略了我传递给.NumberFormat的阵型。这是我用于格式化的代码：

 'Set textAlignment on Double
            For c As Integer = 1 To dt.Columns.Count
                If dt.Columns(c - 1).ColumnName = "Kasnr" Or dt.Columns(c - 1).ColumnName = "Nr" Then
                    For r As Integer = 1 To dt.Rows.Count
                        wBook.Worksheets(1).Cells(r, c).HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter
                    Next
                ElseIf dt.Columns(c - 1).ColumnName = "BeginSaldo" Or dt.Columns(c - 1).ColumnName = "EindSaldo" Or dt.Columns(c - 1).ColumnName = "bedragExBTW" Or dt.Columns(c - 1).ColumnName = "Transactiedatum" Or dt.Columns(c - 1).ColumnName = "Grootboeknummer" Then
                    For r As Integer = 1 To dt.Rows.Count
                        wBook.Worksheets(1).Cells(r, c).HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignRight
                    Next
                ElseIf dt.Columns(c - 1).ColumnName = "Datum" Then
                    For r As Integer = 1 To dt.Rows.Count
                        wBook.Worksheets(1).Cells(r, c).NumberFormat = "dd/MM/yyyy;@"
                    Next
                Else
                        Continue For
                End If
            Next

现在wBook.Worksheets(1).Cells(r, c).NumberFormat = "dd/MM/yyyy;@"它显示为'11 -18-2013'，我真的想要一个欧洲日期格式为'18 -11-2013'。现在，如果我wBook.Worksheets(1).Cells(r, c).NumberFormat = "MM/dd/yyyy;@"，那么excel列将显示'18 -11-2013'..这很奇怪，因为我将它设置为相反的方式..有没有人遇到过这样的事情？

编辑：我为每个单元格设置值的代码：

Dim dr1 As System.Data.DataRow
            For i As Integer = 0 To datagridView1.RowCount - 1
                dr1 = dset.Tables(0).NewRow
                For j As Integer = 0 To datagridView1.Columns.Count - 1
                    If TypeOf (datagridView1.Rows(i).Cells(j).Value) Is DateTime Then
                        'Format Date to display on Excel file
                        If datagridView1.Columns(j).Name = "Datum" Or datagridView1.Columns(j).Name = "Transactiedatum" Then
                            Dim datumFormat As String = datagridView1.Rows(i).Cells(j).Value.Date.Day & "/" & datagridView1.Rows(i).Cells(j).Value.Date.Month & "/" & datagridView1.Rows(i).Cells(j).Value.Date.Year

                            dr1(j) = datumFormat
                        ElseIf datagridView1.Columns(j).Name = "Periode" Then
                            Dim PeriodeFormat As String = datagridView1.Rows(i).Cells(j).Value.Date.Year & "/" & datagridView1.Rows(i).Cells(j).Value.Date.Month

                            dr1(j) = PeriodeFormat
                        Else
                            dr1(j) = datagridView1.Rows(i).Cells(j).Value
                        End If
                    ElseIf TypeOf (datagridView1.Rows(i).Cells(j).Value) Is Double Or TypeOf (datagridView1.Rows(i).Cells(j).Value) Is Integer Then
                        'Format Double/force 2 decimals
                        If datagridView1.Columns(j).Name = "BeginSaldo" Or datagridView1.Columns(j).Name = "EindSaldo" Or datagridView1.Columns(j).Name = "bedragExBTW" Then

                            dr1(j) = DMDbl(datagridView1.Rows(i).Cells(j).Value).ToString("N2")
                        Else

                            dr1(j) = datagridView1.Rows(i).Cells(j).Value
                        End If
                    Else

                        dr1(j) = datagridView1.Rows(i).Cells(j).Value
                    End If
                Next
                dset.Tables(0).Rows.Add(dr1)
            Next

正如你可以看到你在两者上传递一个字符串（Datum和TransactieDatum）。但是Datum专栏总是得到一种格式（不正确）和Transactiedatum，也是一个日期，根本没有任何格式。

EDIT2：我在excel上设置单元格值的代码：

For Each dc In dt.Columns
                colIndex = colIndex + 1
                excel.Cells(1, colIndex) = dc.ColumnName
            Next

            For Each dr In dt.Rows
                rowIndex = rowIndex + 1
                colIndex = 0
                For Each dc In dt.Columns
                    colIndex = colIndex + 1
                    excel.Cells(rowIndex + 1, colIndex) = dr(dc.ColumnName)
                Next
            Next

Worksheets.Cells.NumberFormat正好相反

0 个答案: