Ajouter un filigrane WordArt au graphique

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L’exemple suivant montre comment ajouter une forme WordArt en filigrane pour la zone de traçage d’un graphique existant.

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
// Open the existing excel file.
Workbook workbook = new Workbook(dataDir + "sample.xlsx");
// Get the chart in the first worksheet.
Aspose.Cells.Charts.Chart chart = workbook.Worksheets[0].Charts[0];
// Add a WordArt watermark (shape) to the chart's plot area.
Aspose.Cells.Drawing.Shape wordart = chart.Shapes.AddTextEffectInChart(MsoPresetTextEffect.TextEffect2,
"CONFIDENTIAL", "Arial Black", 66, false, false, 1200, 500, 2000, 3000);
// Get the shape's fill format.
FillFormat wordArtFormat = wordart.Fill;
// Set the transparency.
wordArtFormat.Transparency = 0.9;
// Get the line format.
LineFormat lineFormat = wordart.Line;
// Set Line format to invisible.
lineFormat.Weight = 0.0;
// Save the excel file.
workbook.Save(dataDir + "output_out.xlsx");