创建饼图

图表以易于理解的方式显示数据。使用Microsoft Excel的用户可以创建多种不同的图表并对其进行自定义。开发人员使用Aspose.Cells for .NET时可以使用相同的功能。

创建饼图

本文比较了使用Office Automation和VSTO创建饼图与使用Aspose.Cells for .NET创建饼图的步骤为：

1. 创建工作簿和工作表。
2. 添加示例数据。
3. 引用 productsChart。
4. 添加饼图，定义数据范围和图表标题。
5. 保存电子表格。

本文中的代码示例展示了如何使用C#或Visual Basic添加饼图，与使用C#或Visual Basic创建一个Aspose.Cells进行比较。

使用VSTO创建饼图

接下来的代码示例展示了如何使用VSTO向电子表格添加饼图。

C#

 void PieChart()

{

    //Access a Vsto Worksheet

    Microsoft.Office.Tools.Excel.Worksheet sheet = this;

    //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 Vsto sheet

    Microsoft.Office.Interop.Excel.Workbook workbook= sheet.Application.ActiveWorkbook;

    //Save the copy of workbook as OutputVsto.xlsx

    workbook.SaveCopyAs("C:\\Downloads\\OutputVsto.xlsx");

}

使用VSTO创建的饼图

使用Aspose.Cells for .NET创建饼图

接下来的代码示例展示了如何使用Aspose.Cells向电子表格添加饼图。

C#

 private 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("C:\\Downloads\\OutputAspose.xlsx");

}

使用Aspose.Cells for .NET创建的饼图