'Create a Excel Object
Using excel As Excel = New Excel(ReportPath, CurrentMapping.Settings)
' Create newWorksheet
excel.CreateExcelTemplate(ReportPath)
' Generate Styles
excel.GenerateStyleSheet(Me.Schema)
excel.SetSheetDataSettings(RowCount, ColumnCount)
'Open Sheet
SheetName = ReportHelper.FormatData(InputData, SheetName).Replace("*", String.Empty)
excel.OpenSheet(SheetName)
'Fill Column Settings
excel.AddStartColumnSettings()
FillColumnSettings(excel, schemaTable) ' Set Column Width
excel.AddEndColumnSettings()
'Start Sheet and Fill Header and Data Header
excel.AddStartSheetData()
FillHeader(excel, CurrentMapping.Header) ' Generate Header
FillDataHeader(excel, schemaTable) ' Generate Data Header
'Set start row
If String.IsNullOrEmpty(CurrentMapping.Settings.StartPrintRow) Then
StartRow = excel.GetRowCount
Else
StartRow = CurrentMapping.Settings.StartPrintRow
End If
Dim lastRow As DataRow = Nothing
For Each row As DataRow In reportData.Rows
'To Generate the Summary Row if Summary is needed
If Not String.IsNullOrEmpty(CurrentMapping.SummaryBreakColumn) Then
If lastRow IsNot Nothing Then
For Each spair As String In CurrentMapping.SummaryBreakColumn.Split(","c)
Dim dataKey As String = spair.Split("-"c)(0)
Dim sumKey As String = spair.Split("-"c)(1)
If Not lastRow(dataKey).Equals(row(dataKey)) Then
CreateEmptyRow(excel)
FillDataHeader(CurrentMapping.SummaryMappings, excel, SummarySchema)
For Each dr As DataRow In SummaryData.Rows
If dr(sumKey) = lastRow(dataKey) Then
GenerateRow(CurrentMapping.SummaryMappings, excel, dr, SummarySchema)
End If
Next
CreateEmptyRow(excel)
End If
Next
End If
lastRow = row
End If
'Generate the row data
GenerateRow(excel, row, schemaTable)
'Close the sheet and write the workbook settings
excel.AddEndSheetData()
excel.CloseSheet()
excel.WorkbookSettings(SheetName, StartRow, excel.RowCount - StartRow, ColumnCount) 'Apply Workbook Settings
excel.CloseDocument()
我正在创建电子表格并添加标题和列标题，GenerateRow方法会在电子表格中添加行数据。在电子表格特定列中，我附加了文件系统中的图像。
Protected Sub GenerateRow(ByVal excel As Excel, ByVal row As DataRow, ByVal schemaTable As DataTable)
If EvaluateRowCondition(row).Equals("TRUE") Then
Dim rowBuilder As New StringBuilder
excel.AddStartRow(rowBuilder)
For Each omkey As String In CurrentMapping.OutputMappings.Keys
If Schema.ToString.Substring(Schema.LastIndexOf("\")) = "\rptSalesProduct.xml" Then
For Each cell As Cell In CreateCell(CurrentMapping.OutputMappings(omkey), row, schemaTable)
If (row("mainproductpicture").Trim() <> String.Empty) Then
excel.AddImgColumn(rowBuilder, cell.Style, cell.DataType, cell.Data, SheetName)
Else
excel.AddColumn(rowBuilder, cell.Style, cell.DataType, cell.Data)
End If
Next
Continue For
End If
Next
excel.AddEndRow(rowBuilder)
End If
End Sub
在生成行方法中，要调用图像列AddImgColumn方法，并调用数据列AddColumn方法。
Sub AddColumn(ByVal rowBuilder As StringBuilder, ByVal styleId As String, ByVal typeName As String, ByVal data As String)
'Get the Style Index no by name
If styleIndex.ContainsKey(styleId) Then
styleId = styleIndex(styleId)
Else
If styleIndex.ContainsKey("DefaultData") Then 'Set style for default data
styleId = styleIndex("DefaultData")
Else
styleId = "0"
End If
End If
'Convert data
data = System.Web.HttpUtility.HtmlEncode(data)
If data Is Nothing Then
data = String.Empty
End If
'Write data
ColumnCount = ColumnCount + 1
Dim address As String = GetColumnName(ColumnCount) + "" & RowCount
Select Case typeName
Case "String"
rowBuilder.Append(String.Format("<c r=""{0}"" s=""{1}"" t=""str"" ><v>{2}</v></c>", address, styleId, data))
Case "Number"
rowBuilder.Append(String.Format("<c r=""{0}"" s=""{1}"" ><v>{2}</v></c>", address, styleId, data))
End Select
End Sub
我遇到了AddImgColumn方法的问题，下面是该方法的代码
Sub AddImgColumn(ByVal rowBuilder As StringBuilder, ByVal styleId As String, ByVal typeName As String, ByVal data As String, ByVal sheetName As String)
'Get the Style Index no by name
If styleIndex.ContainsKey(styleId) Then
styleId = styleIndex(styleId)
Else
If styleIndex.ContainsKey("DefaultData") Then 'Set style for default data
styleId = styleIndex("DefaultData")
Else
styleId = "0"
End If
End If
'Convert data
data = System.Web.HttpUtility.HtmlEncode(data)
If data Is Nothing Then
data = String.Empty
End If
Dim workbookPart As WorkbookPart
Dim worksheet As Worksheet
Using mySpreadsheet As SpreadsheetDocument = SpreadsheetDocument.Open(Path, True)
workbookPart = mySpreadsheet.WorkbookPart
For Each worksheetPart As WorksheetPart In workbookPart.WorksheetParts
worksheet = worksheetPart.Worksheet
InsertImage(worksheet, 1, 1, data)
worksheetPart.Worksheet.Save()
Exit For
Next
End Using
End Sub
在打开电子表格时，我收到错误消息“进程无法访问该文件，因为它被另一个进程使用”。
我需要将工作表的现有实例传递给InsertImage方法来绑定特定单元格中的图像
Protected Shared Sub InsertImage(ByVal ws As Worksheet, ByVal x As Long, ByVal y As Long, ByVal width As System.Nullable(Of Long), ByVal height As System.Nullable(Of Long), ByVal sImagePath As String)
Try
Dim wsp As WorksheetPart = ws.WorksheetPart
Dim dp As DrawingsPart
Dim imgp As ImagePart
Dim wsd As SP.WorksheetDrawing
Dim ipt As ImagePartType
Select Case sImagePath.Substring(sImagePath.LastIndexOf("."c) + 1).ToLower()
Case "png"
ipt = ImagePartType.Png
Exit Select
Case "jpg", "jpeg"
ipt = ImagePartType.Jpeg
Exit Select
Case "gif"
ipt = ImagePartType.Gif
Exit Select
Case Else
Return
End Select
If wsp.DrawingsPart Is Nothing Then
'----- no drawing part exists, add a new one
dp = wsp.AddNewPart(Of DrawingsPart)()
imgp = dp.AddImagePart(ipt, wsp.GetIdOfPart(dp))
wsd = New SP.WorksheetDrawing()
Else
'----- use existing drawing part
dp = wsp.DrawingsPart
imgp = dp.AddImagePart(ipt)
dp.CreateRelationshipToPart(imgp)
wsd = dp.WorksheetDrawing
End If
Using fs As New FileStream(sImagePath, FileMode.Open)
imgp.FeedData(fs)
End Using
Dim imageNumber As Integer = 1 'dp.ImageParts.Count(Of ImagePart)()
If imageNumber = 1 Then
Dim drawing As New Drawing()
drawing.Id = dp.GetIdOfPart(imgp)
ws.Append(drawing)
End If
Dim nvdp As New SP.NonVisualDrawingProperties()
nvdp.Id = New UInt32Value(CUInt(1024 + imageNumber))
nvdp.Name = "Picture " & imageNumber.ToString()
nvdp.Description = ""
Dim picLocks As New DocumentFormat.OpenXml.Drawing.PictureLocks()
picLocks.NoChangeAspect = True
picLocks.NoChangeArrowheads = True
Dim nvpdp As New SP.NonVisualPictureDrawingProperties()
nvpdp.PictureLocks = picLocks
Dim nvpp As New SP.NonVisualPictureProperties()
nvpp.NonVisualDrawingProperties = nvdp
nvpp.NonVisualPictureDrawingProperties = nvpdp
Dim stretch As New DocumentFormat.OpenXml.Drawing.Stretch()
stretch.FillRectangle = New DocumentFormat.OpenXml.Drawing.FillRectangle()
Dim blipFill As New SP.BlipFill()
Dim blip As New DocumentFormat.OpenXml.Drawing.Blip()
blip.Embed = dp.GetIdOfPart(imgp)
blip.CompressionState = DocumentFormat.OpenXml.Drawing.BlipCompressionValues.Print
blipFill.Blip = blip
blipFill.SourceRectangle = New DocumentFormat.OpenXml.Drawing.SourceRectangle()
blipFill.Append(stretch)
Dim t2d As New DocumentFormat.OpenXml.Drawing.Transform2D()
Dim offset As New DocumentFormat.OpenXml.Drawing.Offset()
offset.X = 0
offset.Y = 0
t2d.Offset = offset
Dim bm As New Bitmap(sImagePath)
Dim extents As New DocumentFormat.OpenXml.Drawing.Extents()
If width Is Nothing Then
extents.Cx = CLng(bm.Width) * CLng(System.Math.Truncate(CDbl(914400) / bm.HorizontalResolution))
Else
extents.Cx = width
End If
If height Is Nothing Then
extents.Cy = CLng(bm.Height) * CLng(System.Math.Truncate(CDbl(914400) / bm.VerticalResolution))
Else
extents.Cy = height
End If
bm.Dispose()
t2d.Extents = extents
Dim sp As New SP.ShapeProperties()
sp.BlackWhiteMode = DocumentFormat.OpenXml.Drawing.BlackWhiteModeValues.Auto
sp.Transform2D = t2d
Dim prstGeom As New DocumentFormat.OpenXml.Drawing.PresetGeometry()
prstGeom.Preset = DocumentFormat.OpenXml.Drawing.ShapeTypeValues.Rectangle
prstGeom.AdjustValueList = New DocumentFormat.OpenXml.Drawing.AdjustValueList()
sp.Append(prstGeom)
sp.Append(New DocumentFormat.OpenXml.Drawing.NoFill())
Dim picture As New DocumentFormat.OpenXml.Drawing.Spreadsheet.Picture()
picture.NonVisualPictureProperties = nvpp
picture.BlipFill = blipFill
picture.ShapeProperties = sp
Dim pos As New SP.Position()
pos.X = x
pos.Y = y
Dim ext As New SP.Extent()
ext.Cx = extents.Cx
ext.Cy = extents.Cy
Dim anchor As New SP.AbsoluteAnchor()
anchor.Position = pos
anchor.Extent = ext
anchor.Append(picture)
anchor.Append(New SP.ClientData())
wsd.Append(anchor)
wsd.Save(dp)
Catch ex As Exception
' or do something more interesting if you want
'Throw ex
End Try
End Sub
Protected Shared Sub InsertImage(ByVal ws As Worksheet, ByVal x As Long, ByVal y As Long, ByVal sImagePath As String)
InsertImage(ws, x, y, Nothing, Nothing, sImagePath)
End Sub
请提供一些解决方案，以使其发挥作用。
由于 曼居拉