Create a Pie Chart in VSTO and Aspose.Cells

This article compares how to create a pie chart using Office Automation and VSTO with using Aspose.Cells for .NET. The steps for creating a pie chart are:

1. Creating a workbook and worksheet.
2. Adding sample data.
3. Referencing the productsChart.
4. Adding a pie chart, defining the data range and chart title.
5. Saving the spreadsheet.

The code samples in this article show how to add a pie chart with VSTO, using C#, compared to creating one with Aspose.Cells, also using C#.

VSTO

 private void PieChart()
{
    //Instantiate the Application object.
    Excel.Application ExcelApp = Application;

    //Add a Workbook.
    Excel.Workbook objBook = ExcelApp.Workbooks.Add(System.Reflection.Missing.Value);

    // Access a VSTO Worksheet
    Microsoft.Office.Interop.Excel.Worksheet nativeWorksheet = Globals.ThisAddIn.Application.ActiveWorkbook.ActiveSheet;
    Microsoft.Office.Tools.Excel.Worksheet sheet = Globals.Factory.GetVstoObject(nativeWorksheet);

    //Add sample data for pie chart
    //Add headings in A1 and B1
    sheet.Cells[1, 1] = "Products";
    sheet.Cells[1, 2] = "Users";

    //Add data from A2 till B4
    sheet.Cells[2, 1] = "Aspose.Cells";
    sheet.Cells[2, 2] = 10000;
    sheet.Cells[3, 1] = "Aspose.Slides";
    sheet.Cells[3, 2] = 8000;
    sheet.Cells[4, 1] = "Aspose.Words";
    sheet.Cells[4, 2] = 12000;

    //Chart reference
    Microsoft.Office.Tools.Excel.Chart productsChart;

    //Add a Pie Chart
    productsChart = sheet.Controls.AddChart(0, 105, 330, 200, "ProductUsers");
    productsChart.ChartType = Microsoft.Office.Interop.Excel.XlChartType.xlPie;

    //Set chart title
    productsChart.HasTitle = true;
    productsChart.ChartTitle.Text = "Users";

    //Gets the cells that define the data to be charted.
    Microsoft.Office.Interop.Excel.Range chartRange = sheet.get_Range("A2", "B4");
    productsChart.SetSourceData(chartRange, missing);

    //Access the active workbook from the VSTO sheet
    Microsoft.Office.Interop.Excel.Workbook workbook = sheet.Application.ActiveWorkbook;

    //Save the copy of workbook as OutputVsto.xlsx
    workbook.SaveCopyAs("OutputVsto.xlsx");
}

Aspose.Cells

 private static void PieChart()
{
    //Create Aspose.Cells Workbook
    Workbook workbook = new Workbook();

    //Access Aspose.Cells Worksheet
    Worksheet sheet = workbook.Worksheets[0];

    //Add sample data for pie chart
    //Add headings in A1 and B1
    sheet.Cells["A1"].PutValue("Products");
    sheet.Cells["B1"].PutValue("Users");

    //Add data from A2 till B4
    sheet.Cells["A2"].PutValue("Aspose.Cells");
    sheet.Cells["B2"].PutValue(10000);
    sheet.Cells["A3"].PutValue("Aspose.Slides");
    sheet.Cells["B3"].PutValue(8000);
    sheet.Cells["A4"].PutValue("Aspose.Words");
    sheet.Cells["B4"].PutValue(12000);

    //Chart reference
    Chart productsChart;

    //Add a Pie Chart
    int chartIdx = sheet.Charts.Add(ChartType.Pie, 7, 0, 20, 6);
    productsChart = sheet.Charts[chartIdx];

    //Gets the cells that define the data to be charted
    int seriesIdx = productsChart.NSeries.Add("=Sheet1!$B$2:$B$4", true);
    Series nSeries = productsChart.NSeries[seriesIdx];
    nSeries.XValues = "=Sheet1!$A$2:$A$4";

    //Set chart title
    productsChart.Title.Text = "Users";

    //Autofit first column
    sheet.AutoFitColumn(0);

    //Save the copy of workbook as OutputAspose.xlsx
    workbook.Save("OutputAspose.xlsx");
}

Download Sample Code

• GitHub
• SourceForge
• Bitbucket