Erstellen und Einbetten eines Excel-Diagramms als OLE-Objekt in eine Microsoft PowerPoint-Folie

Erstellen und Einbetten eines Excel-Diagramms

Die beiden folgenden Codebeispiele sind lang und detailliert, da die beschriebene Aufgabe komplex ist. Sie erstellen eine Microsoft Excel-Arbeitsmappe, erstellen ein Diagramm und dann die Microsoft PowerPoint-Präsentation, in die Sie das Diagramm einbetten werden. OLE-Objekte enthalten Links zum ursprünglichen Dokument, sodass ein Benutzer, der die embedded Datei doppelt anklickt, die Datei und deren Anwendung startet.

VSTO-Beispiel

Mit VSTO werden die folgenden Schritte ausgeführt:

  1. Erstellen Sie eine Instanz des Microsoft Excel ApplicationClass-Objekts.
  2. Erstellen Sie eine neue Arbeitsmappe mit einem Blatt darin.
  3. Fügen Sie das Diagramm zum Blatt hinzu.
  4. Speichern Sie die Arbeitsmappe.
  5. Öffnen Sie die Excel-Arbeitsmappe, die das Arbeitsblatt mit den Diagrammdaten enthält.
  6. Holen Sie sich die ChartObjects-Sammlung für das Blatt.
  7. Holen Sie sich das Diagramm zum Kopieren.
  8. Erstellen Sie eine Microsoft PowerPoint-Präsentation.
  9. Fügen Sie der Präsentation eine leere Folie hinzu.
  10. Kopieren Sie das Diagramm von dem Excel-Arbeitsblatt in die Zwischenablage.
  11. Fügen Sie das Diagramm in die PowerPoint-Präsentation ein.
  12. Positionieren Sie das Diagramm auf der Folie.
  13. Speichern Sie die Präsentation.
static void SetCellValue(xlNS.Worksheet targetSheet, string Cell, object Value)
{
targetSheet.get_Range(Cell, Cell).set_Value(xlNS.XlRangeValueDataType.xlRangeValueDefault, Value);
}
static void CreateNewChartInExcel()
{
// Declare a variable for the Excel ApplicationClass instance.
Microsoft.Office.Interop.Excel.ApplicationClass excelApplication = null;
// Declare variables for the Workbooks.Open method parameters.
string paramWorkbookPath = Application.StartupPath + @"\ChartData.xlsx";
object paramMissing = Type.Missing;
// Declare variables for the Chart.ChartWizard method.
object paramChartFormat = 1;
object paramCategoryLabels = 0;
object paramSeriesLabels = 0;
bool paramHasLegend = true;
object paramTitle = "Sales by Quarter";
object paramCategoryTitle = "Fiscal Quarter";
object paramValueTitle = "Billions";
try
{
// Create an instance of the Excel ApplicationClass object.
excelApplication = new Microsoft.Office.Interop.Excel.ApplicationClass();
// Create a new workbook with 1 sheet in it.
xlNS.Workbook newWorkbook = excelApplication.Workbooks.Add(xlNS.XlWBATemplate.xlWBATWorksheet);
// Change the name of the sheet.
xlNS.Worksheet targetSheet = (xlNS.Worksheet)(newWorkbook.Worksheets[1]);
targetSheet.Name = "Quarterly Sales";
// Insert some data for the chart into the sheet.
// A B C D E
// 1 Q1 Q2 Q3 Q4
// 2 N. America 1.5 2 1.5 2.5
// 3 S. America 2 1.75 2 2
// 4 Europe 2.25 2 2.5 2
// 5 Asia 2.5 2.5 2 2.75
SetCellValue(targetSheet, "A2", "N. America");
SetCellValue(targetSheet, "A3", "S. America");
SetCellValue(targetSheet, "A4", "Europe");
SetCellValue(targetSheet, "A5", "Asia");
SetCellValue(targetSheet, "B1", "Q1");
SetCellValue(targetSheet, "B2", 1.5);
SetCellValue(targetSheet, "B3", 2);
SetCellValue(targetSheet, "B4", 2.25);
SetCellValue(targetSheet, "B5", 2.5);
SetCellValue(targetSheet, "C1", "Q2");
SetCellValue(targetSheet, "C2", 2);
SetCellValue(targetSheet, "C3", 1.75);
SetCellValue(targetSheet, "C4", 2);
SetCellValue(targetSheet, "C5", 2.5);
SetCellValue(targetSheet, "D1", "Q3");
SetCellValue(targetSheet, "D2", 1.5);
SetCellValue(targetSheet, "D3", 2);
SetCellValue(targetSheet, "D4", 2.5);
SetCellValue(targetSheet, "D5", 2);
SetCellValue(targetSheet, "E1", "Q4");
SetCellValue(targetSheet, "E2", 2.5);
SetCellValue(targetSheet, "E3", 2);
SetCellValue(targetSheet, "E4", 2);
SetCellValue(targetSheet, "E5", 2.75);
// Get the range holding the chart data.
xlNS.Range dataRange = targetSheet.get_Range("A1", "E5");
// Get the ChartObjects collection for the sheet.
xlNS.ChartObjects chartObjects = (xlNS.ChartObjects)(targetSheet.ChartObjects(paramMissing));
// Add a Chart to the collection.
xlNS.ChartObject newChartObject = chartObjects.Add(0, 100, 600, 300);
newChartObject.Name = "Sales Chart";
// Create a new chart of the data.
newChartObject.Chart.ChartWizard(dataRange, xlNS.XlChartType.xl3DColumn, paramChartFormat, xlNS.XlRowCol.xlRows,
paramCategoryLabels, paramSeriesLabels, paramHasLegend, paramTitle, paramCategoryTitle, paramValueTitle, paramMissing);
// Save the workbook.
newWorkbook.SaveAs(paramWorkbookPath, paramMissing, paramMissing, paramMissing, paramMissing,
paramMissing, xlNS.XlSaveAsAccessMode.xlNoChange, paramMissing, paramMissing, paramMissing, paramMissing, paramMissing);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
if (excelApplication != null)
{
// Close Excel.
excelApplication.Quit();
}
}
}
static void UseCopyPaste()
{
// Declare variables to hold references to PowerPoint objects.
pptNS.ApplicationClass powerpointApplication = null;
pptNS.Presentation pptPresentation = null;
pptNS.Slide pptSlide = null;
pptNS.ShapeRange shapeRange = null;
// Declare variables to hold references to Excel objects.
xlNS.ApplicationClass excelApplication = null;
xlNS.Workbook excelWorkBook = null;
xlNS.Worksheet targetSheet = null;
xlNS.ChartObjects chartObjects = null;
xlNS.ChartObject existingChartObject = null;
string paramPresentationPath = Application.StartupPath + @"\ChartTest.pptx";
string paramWorkbookPath = Application.StartupPath + @"\ChartData.xlsx";
object paramMissing = Type.Missing;
try
{
// Create an instance of PowerPoint.
powerpointApplication = new pptNS.ApplicationClass();
// Create an instance Excel.
excelApplication = new xlNS.ApplicationClass();
// Open the Excel workbook containing the worksheet with the chart data.
excelWorkBook = excelApplication.Workbooks.Open(paramWorkbookPath,
paramMissing, paramMissing, paramMissing, paramMissing, paramMissing,
paramMissing, paramMissing, paramMissing, paramMissing, paramMissing,
paramMissing, paramMissing, paramMissing, paramMissing);
// Get the worksheet that contains the chart.
targetSheet =
(xlNS.Worksheet)(excelWorkBook.Worksheets["Quarterly Sales"]);
// Get the ChartObjects collection for the sheet.
chartObjects =
(xlNS.ChartObjects)(targetSheet.ChartObjects(paramMissing));
// Get the chart to copy.
existingChartObject =
(xlNS.ChartObject)(chartObjects.Item("Sales Chart"));
// Create a PowerPoint presentation.
pptPresentation =
powerpointApplication.Presentations.Add(
Microsoft.Office.Core.MsoTriState.msoTrue);
// Add a blank slide to the presentation.
pptSlide =
pptPresentation.Slides.Add(1, pptNS.PpSlideLayout.ppLayoutBlank);
// Copy the chart from the Excel worksheet to the clipboard.
existingChartObject.Copy();
// Paste the chart into the PowerPoint presentation.
shapeRange = pptSlide.Shapes.Paste();
// Position the chart on the slide.
shapeRange.Left = 60;
shapeRange.Top = 100;
// Save the presentation.
pptPresentation.SaveAs(paramPresentationPath, pptNS.PpSaveAsFileType.ppSaveAsOpenXMLPresentation, Microsoft.Office.Core.MsoTriState.msoTrue);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
// Release the PowerPoint slide object.
shapeRange = null;
pptSlide = null;
// Close and release the Presentation object.
if (pptPresentation != null)
{
pptPresentation.Close();
pptPresentation = null;
}
// Quit PowerPoint and release the ApplicationClass object.
if (powerpointApplication != null)
{
powerpointApplication.Quit();
powerpointApplication = null;
}
// Release the Excel objects.
targetSheet = null;
chartObjects = null;
existingChartObject = null;
// Close and release the Excel Workbook object.
if (excelWorkBook != null)
{
excelWorkBook.Close(false, paramMissing, paramMissing);
excelWorkBook = null;
}
// Quit Excel and release the ApplicationClass object.
if (excelApplication != null)
{
excelApplication.Quit();
excelApplication = null;
}
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
GC.WaitForPendingFinalizers();
}
}

Aspose.Slides für Java Beispiel

Mit Aspose.Slides für .NET werden die folgenden Schritte ausgeführt:

  1. Erstellen Sie eine Arbeitsmappe mit Aspose.Cells für Java.
  2. Erstellen Sie ein Microsoft Excel-Diagramm.
  3. Setzen Sie die OLE-Größe des Excel-Diagramms.
  4. Holen Sie sich ein Bild des Diagramms.
  5. Betten Sie das Excel-Diagramm als OLE-Objekt in die PPTX-Präsentation ein, indem Sie Aspose.Slides für Java verwenden.
  6. Ersetzen Sie das Objekt des geänderten Bildes durch das in Schritt 3 erhaltene Bild, um das Problem des geänderten Objekts zu berücksichtigen.
  7. Schreiben Sie die Ausgabepräsentation im PPTX-Format auf die Festplatte.
try {
//Create a workbook
Workbook wb = new Workbook();
//Add an excel chart
int chartRows = 55;
int chartCols = 25;
int chartSheetIndex = AddExcelChartInWorkbook(wb, chartRows, chartCols);
//Set chart ole size
wb.getWorksheets().setOleSize(0, chartRows, 0, chartCols);
//Get the chart image and save to stream
com.aspose.cells.ImageOrPrintOptions opts= new com.aspose.cells.ImageOrPrintOptions();
opts.setImageFormat(com.aspose.cells.ImageFormat.getPng());
ByteArrayOutputStream imageStream=new ByteArrayOutputStream();
wb.getWorksheets().get(chartSheetIndex).getCharts().get(0).toImage(imageStream, opts);
//Save the workbook to stream
ByteArrayOutputStream bout=new ByteArrayOutputStream();
wb.save(bout,com.aspose.cells.SaveFormat.EXCEL_97_TO_2003);
//Create a presentation
Presentation pres = new Presentation();
ISlide sld = pres.getSlides().get_Item(0);
//Add the workbook on slide
AddExcelChartInPresentation(pres, sld, bout.toByteArray(), imageStream.toByteArray());
//Write the presentation to disk
pres.save("outputJ.pptx", SaveFormat.Pptx);
} catch (Exception e) {
}
static void AddExcelChartInPresentation(Presentation pres, ISlide sld, byte[] wbArray, byte[] imgChart) throws Exception
{
double oleHeight = pres.getSlideSize().getSize().getHeight();
double oleWidth = pres.getSlideSize().getSize().getWidth();
Workbook wb=new Workbook();
//Createing and EXCEL_97_TO_2003 LoadOptions object
com.aspose.cells.LoadOptions loadOptions = new com.aspose.cells.LoadOptions(com.aspose.cells.FileFormatType.EXCEL_97_TO_2003);
wb=new Workbook(new ByteArrayInputStream(wbArray),loadOptions);
IOleObjectFrame oof = sld.getShapes().addOleObjectFrame(0f, 0f, (float)oleWidth, (float)oleHeight, "Excel.Sheet.8", wbArray);
oof.getSubstitutePictureFormat().getPicture().setImage(pres.getImages().addImage(new ByteArrayInputStream(imgChart)));
}
static int AddExcelChartInWorkbook(Workbook wb, int chartRows, int chartCols)
{
//Array of cell names
String[] cellsName = new String[]
{
"A1", "A2", "A3", "A4",
"B1", "B2", "B3", "B4",
"C1", "C2", "C3", "C4",
"D1", "D2", "D3", "D4",
"E1", "E2", "E3", "E4"
};
//Array of cell data
int[] cellsValue = new int[]
{
67,86,68,91,
44,64,89,48,
46,97,78,60,
43,29,69,26,
24,40,38,25
};
//Add a new worksheet to populate cells with data
int dataSheetIndex =wb.getWorksheets().add();
Worksheet dataSheet =wb.getWorksheets().get(dataSheetIndex);
String sheetName = "DataSheet";
dataSheet.setName(sheetName);
//Populate DataSheet with data
int size= Array.getLength(cellsName);
for (int i = 0; i < size; i++)
{
String cellName = cellsName[i];
int cellValue = cellsValue[i];
dataSheet.getCells().get(cellName).setValue(cellValue);
}
//Add a chart sheet
int WorksheetIndex = wb.getWorksheets().add(SheetType.CHART);
Worksheet chartSheet = wb.getWorksheets().get(WorksheetIndex);
chartSheet.setName("ChartSheet");
int chartSheetIdx = chartSheet.getIndex();
//Add a chart in ChartSheet with data series from DataSheet
int chIndex = chartSheet.getCharts().add(ChartType.COLUMN, 0, chartRows, 0, chartCols);
Chart chart=chartSheet.getCharts().get(chIndex);
chart.getNSeries().add(sheetName + "!A1:E1", false);
chart.getNSeries().add(sheetName + "!A2:E2", false);
chart.getNSeries().add(sheetName + "!A3:E3", false);
chart.getNSeries().add(sheetName + "!A4:E4", false);
//Set ChartSheet as active sheet
wb.getWorksheets().setActiveSheetIndex(chartSheetIdx);
return chartSheetIdx;
}