Imposta l immagine come riempimento di sfondo nel grafico

Per fare ciò, Aspose.Cells fornisce la proprietà Chart.PlotArea.Area.FillFormat.ImageData. Il seguente codice di esempio dimostra l’uso della proprietà Chart.PlotArea.Area.FillFormat.ImageData per impostare un’immagine come riempimento di sfondo nel grafico.

Codice C# per impostare un’immagine come riempimento di sfondo nel grafico

// 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);
// Create a new Workbook.
Workbook workbook = new Workbook();
// Get the first worksheet.
Worksheet sheet = workbook.Worksheets[0];
// Set the name of worksheet
sheet.Name = "Data";
// Get the cells collection in the sheet.
Cells cells = workbook.Worksheets[0].Cells;
// Put some values into a cells of the Data sheet.
cells["A1"].PutValue("Region");
cells["A2"].PutValue("France");
cells["A3"].PutValue("Germany");
cells["A4"].PutValue("England");
cells["A5"].PutValue("Sweden");
cells["A6"].PutValue("Italy");
cells["A7"].PutValue("Spain");
cells["A8"].PutValue("Portugal");
cells["B1"].PutValue("Sale");
cells["B2"].PutValue(70000);
cells["B3"].PutValue(55000);
cells["B4"].PutValue(30000);
cells["B5"].PutValue(40000);
cells["B6"].PutValue(35000);
cells["B7"].PutValue(32000);
cells["B8"].PutValue(10000);
// Add a chart sheet.
int sheetIndex = workbook.Worksheets.Add(SheetType.Chart);
sheet = workbook.Worksheets[sheetIndex];
// Set the name of worksheet
sheet.Name = "Chart";
// Create chart
int chartIndex = 0;
chartIndex = sheet.Charts.Add(Aspose.Cells.Charts.ChartType.Column, 1, 1, 25, 10);
Aspose.Cells.Charts.Chart chart = sheet.Charts[chartIndex];
// Set some properties of chart plot area.
// To set a picture as fill format and make the border invisible.
FileStream fs = File.OpenRead(dataDir+ "aspose.png");
byte[] data = new byte[fs.Length];
fs.Read(data, 0, data.Length);
chart.PlotArea.Area.FillFormat.ImageData = data;
chart.PlotArea.Border.IsVisible = false;
// Set properties of chart title
chart.Title.Text = "Sales By Region";
chart.Title.Font.Color = Color.Blue;
chart.Title.Font.IsBold = true;
chart.Title.Font.Size = 12;
// Set properties of nseries
chart.NSeries.Add("Data!B2:B8", true);
chart.NSeries.CategoryData = "Data!A2:A8";
chart.NSeries.IsColorVaried = true;
// Set the Legend.
Aspose.Cells.Charts.Legend legend = chart.Legend;
legend.Position = Aspose.Cells.Charts.LegendPositionType.Top;
// Save the excel file
workbook.Save(dataDir + "column_chart_out.xls");