使用OpenXml确定xlsx中的单元格格式(日期、货币、自定义等)

Question

我使用OpenXml来解析xlsx文件中的文本。

直接的文本和数字按预期提取，但任何具有单元格格式的内容(如date、currency或custom format(都不会按Excel中显示的文本提取。如果我可以很容易地识别代码中的单元格格式，然后采取相关操作，但我在任何地方都找不到它，这就不会是问题！

示例.xlsx文件具有：

---

单元格A1-日期格式*2001年3月14日

将文本"14/11/2018"输入单元格A1显示为"14/11/2018'

局部变量：

c.CellValue="43418">
c.CellValue.InnerText="43418
c.前缀="x">
c.StyleIndex="2">
c.DataType Nothing
c.CellFormula Nothing

所需值='14/11/2018'

---

单元格A2-货币格式(符号£，小数点后2位(

将文本"2000"输入单元格A2显示为"£2000.00">

局部变量：

c.CellValue="2000">
c.CellValue.InnerText="2000

所需值='£2,000.00'

---

单元格A3-自定义格式"ABC-"@

将文本"p-100"输入单元格A3显示为"ABC-p-100">

局部变量：

OpenXml Cell.CellValue="p-100">
OpenXml单元格.CellValue.InnerText="p-100
OpenXml单元格.Prefix="x">
OpenXml单元.StyleIndex="1">
2OpenXml Cell.DataType="s">
1c.CellFormula Nothing

所需值='ABC-P-1000'

---

这是我的代码：

Public Shared Sub parseXLS(strFileName As String, sbTxtFromFile As StringBuilder)
    Call fncParseXLSXorXLSM(strFileName, sbTxtFromFile)
End Sub
Public Shared Function fncParseXLSXorXLSM(strFileName As String, sbTxtFromFile As StringBuilder) As StringBuilder
        sbTxtFromFile.Length = 0
        Dim intFirst As Integer = 1
        Try
            Using spreadsheetDocument__1 As SpreadsheetDocument = SpreadsheetDocument.Open(strFileName, False)
                Dim workbookPart As WorkbookPart = spreadsheetDocument__1.WorkbookPart
                Dim sharedStringItemsArray As SharedStringItem() = workbookPart.SharedStringTablePart.SharedStringTable.Elements(Of SharedStringItem)().ToArray()
                Dim sheets As DocumentFormat.OpenXml.Spreadsheet.Sheets = spreadsheetDocument__1.WorkbookPart.Workbook.Sheets
                ' For each sheet, display the sheet information.
                For Each sheet As DocumentFormat.OpenXml.OpenXmlElement In sheets
                    For Each attr As DocumentFormat.OpenXml.OpenXmlAttribute In sheet.GetAttributes()
                        Debug.Print("{0}: {1}", attr.LocalName, attr.Value)
                        If attr.LocalName = "name" Then
                            sbTxtFromFile.Append(attr.Value)
                        End If
                    Next
                Next
                For Each worksheetPart As WorksheetPart In workbookPart.WorksheetParts
                    Dim reader As OpenXmlReader = OpenXmlReader.Create(worksheetPart)
                    While reader.Read()
                        If reader.ElementType Is GetType(Cell) Then
                            Do
                                Dim c As Cell = DirectCast(reader.LoadCurrentElement(), Cell)
                                If c.DataType IsNot Nothing AndAlso c.DataType.Value.ToString = "SharedString" Then
                                    Dim ssi As SharedStringItem = sharedStringItemsArray(Integer.Parse(c.CellValue.InnerText))
                                    If Not ssi.Text Is Nothing Then
                                        If Not ssi.Text.Text Is Nothing Then
                                            If intFirst = 1 Then
                                                sbTxtFromFile.Append(ssi.Text.Text)
                                                intFirst = 2
                                            Else
                                                sbTxtFromFile.Append(Environment.NewLine & ssi.Text.Text)
                                            End If
                                        End If
                                    Else
                                        If Not ssi.InnerText Is Nothing Then
                                            If intFirst = 1 Then
                                                sbTxtFromFile.Append(ssi.InnerText)
                                                intFirst = 2
                                            Else
                                                sbTxtFromFile.Append(Environment.NewLine & ssi.InnerText)
                                            End If
                                        End If
                                    End If
                                Else
                                    If Not c.CellValue Is Nothing Then
                                        If intFirst = 1 Then
                                            sbTxtFromFile.Append(c.CellValue.InnerText)
                                            intFirst = 2
                                        Else
                                            sbTxtFromFile.Append(Environment.NewLine & c.CellValue.InnerText)
                                        End If
                                    End If
                                End If
                            Loop While reader.ReadNextSibling()
                        End If
                        If sbTxtFromFile.Length > 0 Then
                            sbTxtFromFile.Append(Environment.NewLine)
                        End If
                    End While
                Next
            End Using
        Catch ex As Exception
            If ex.Message Like "The process cannot access the file '*" Then 'File in use
                sbTxtFromFile.Append("|11readonly11|")
            ElseIf ex.Message Like "Could not find*" Then 'File in use
                sbTxtFromFile.Append("|11notfound11|")
            Else
                sbTxtFromFile.Append("|11cannotread11|")
            End If
        End Try
        Return sbTxtFromFile
    End Function

有什么想法吗？

Answer 1

您可以读取基于StyleIndex属性的单元格样式，这将帮助您确定应用于单元格的格式。

以以下方法为例，并根据您的需要解决问题：

Private Shared Sub ReadCellFormat(cell As Cell, stylesheet As Stylesheet)
    If cell.StyleIndex.HasValue Then
        Debug.Print("Style found for the cell:")
        If stylesheet.CellFormats.Count.Value > cell.StyleIndex.Value Then
            Dim format As CellFormat = stylesheet.CellFormats.ElementAt(cell.StyleIndex.Value)
            If format.NumberFormatId.HasValue AndAlso format.NumberFormatId.Value > 0 Then
                Dim numberFormat As NumberingFormat = stylesheet.NumberingFormats.Single(Function(x As NumberingFormat) x.NumberFormatId.Value = format.NumberFormatId.Value)
                Debug.Print($"Format code: {numberFormat.FormatCode}")
            End If
        End If
    End If
End Sub

p.S：这个方法只是读取给定单元格的数字格式。