Interface IChartCategories

Represents a collection of chart categories.

Inherited Members
Namespace: Syncfusion.XlsIO
Assembly: Syncfusion.XlsIO.NET.dll
Syntax
public interface IChartCategories : IParentApplication, ICollection<IChartCategory>, IEnumerable<IChartCategory>, IEnumerable

Properties

Count

Gets the number of elements in the collection. Read-only.

Declaration
int Count { get; }
Property Value
Type
System.Int32
Examples

The following code illustrates how to get number of IChartCategory elements in the IChartCategories object.

        using (ExcelEngine excelEngine = new ExcelEngine())
        {
            //Create worksheet
            IApplication application = excelEngine.Excel;
            application.DefaultVersion = ExcelVersion.Excel2013;
            IWorkbook workbook = application.Workbooks.Create(1);
            IWorksheet sheet = workbook.Worksheets[0];

            //Add data
            sheet.Range["A1"].Text = "Jan";
            sheet.Range["B1"].Text = "Feb";
            sheet.Range["C1"].Text = "Mar";
            sheet.Range["A2"].Value = "10";
            sheet.Range["B2"].Value = "20";
            sheet.Range["C2"].Value = "30";
            sheet.Range["A3"].Value = "15";
            sheet.Range["B3"].Value = "25";
            sheet.Range["C3"].Value = "35";

            //Create chart
            IChart chart = sheet.Charts.Add();

            //Set range
            chart.DataRange = sheet.Range["A1:C3"];

            //Set chart type
            chart.ChartType = ExcelChartType.Column_Clustered;

            //Get chart categories collection
            IChartCategories categories = chart.Categories;   

            //Displaying the number of categories in the chart
            Console.WriteLine("Number of categories in the chart is:" + categories.Count.ToString());

            //Save and Dispose
            workbook.SaveAs("Chart.xlsx");
            workbook.Close();
            Console.ReadKey();
        }

Item[Int32]

Gets a single category object with the specified index.

Declaration
IChartCategory this[int index] { get; }
Parameters
Type Name Description
System.Int32 index
Property Value
Type
IChartCategory
Examples

The following code illustrates how to access the IChartCategory element by index from the IChartCategories object.

        using (ExcelEngine excelEngine = new ExcelEngine())
        {
            //Create worksheet
            IApplication application = excelEngine.Excel;
            application.DefaultVersion = ExcelVersion.Excel2013;
            IWorkbook workbook = application.Workbooks.Create(1);
            IWorksheet sheet = workbook.Worksheets[0];

            //Add data
            sheet.Range["A1"].Text = "Jan";
            sheet.Range["B1"].Text = "Feb";
            sheet.Range["C1"].Text = "Mar";
            sheet.Range["A2"].Value = "10";
            sheet.Range["B2"].Value = "20";
            sheet.Range["C2"].Value = "30";
            sheet.Range["A3"].Value = "15";
            sheet.Range["B3"].Value = "25";
            sheet.Range["C3"].Value = "35";

            //Create chart
            IChart chart = sheet.Charts.Add();

            //Set range
            chart.DataRange = sheet.Range["A1:C3"];

            //Set chart type
            chart.ChartType = ExcelChartType.Column_Clustered;

            //Get chart categories collection
            IChartCategories categories = chart.Categories;   

            //Get chart category by index
            IChartCategory category = categories[1];           

            //Displaying the name of the category object
            Console.WriteLine("Name of the second category is:" + category.Name);

            //Save and Dispose
            workbook.SaveAs("Chart.xlsx");
            workbook.Close();
            Console.ReadKey();
        }

Item[String]

Gets a single category object with the specified name.

Declaration
IChartCategory this[string name] { get; }
Parameters
Type Name Description
System.String name
Property Value
Type
IChartCategory
Examples

The following code illustrates how to access the IChartCategory element by name from the IChartCategories object.

        using (ExcelEngine excelEngine = new ExcelEngine())
        {
            //Create worksheet
            IApplication application = excelEngine.Excel;
            application.DefaultVersion = ExcelVersion.Excel2013;
            IWorkbook workbook = application.Workbooks.Create(1);
            IWorksheet sheet = workbook.Worksheets[0];

            //Add data
            sheet.Range["A1"].Text = "Jan";
            sheet.Range["B1"].Text = "Feb";
            sheet.Range["C1"].Text = "Mar";
            sheet.Range["A2"].Value = "10";
            sheet.Range["B2"].Value = "20";
            sheet.Range["C2"].Value = "30";
            sheet.Range["A3"].Value = "15";
            sheet.Range["B3"].Value = "25";
            sheet.Range["C3"].Value = "35";

            //Create chart
            IChart chart = sheet.Charts.Add();

            //Set range
            chart.DataRange = sheet.Range["A1:C3"];

            //Set chart type
            chart.ChartType = ExcelChartType.Column_Clustered;

            //Get chart categories collection
            IChartCategories categories = chart.Categories;   

            //Get chart category by name
            IChartCategory category = categories["Jan"];       

            //Checking whether the category is filtered
            Console.WriteLine("Is Jan category is filtered:" + category.IsFiltered);

            //Save and Dispose
            workbook.SaveAs("Chart.xlsx");
            workbook.Close();
            Console.ReadKey();
        }