SlicedChartView.FirstSliceAngle Property

Gets or sets the start angle of the first slice.

Namespace: DevExpress.Docs.Office

Assembly: DevExpress.Docs.Core.v26.1.dll

NuGet Package: DevExpress.Docs.Core

Declaration

C#

public float FirstSliceAngle { get; set; }

VB.NET

Public Property FirstSliceAngle As Single

Property Value

Type	Description
Single	A single-precision value that specifies the angle in degrees.

Example

The following code snippet adds a pie chart to a slide:

C#

using DevExpress.Docs.Office;
using DevExpress.Docs.Presentation;
using System.Drawing;

namespace PresentationApiSample;
public class Program {
    public static async Task Main(string[] _) {
        // Create a presentation.
        Presentation presentation = new Presentation();

        // Reset the slide collection.
        presentation.Slides.Clear();

        // Add a blank slide.
        Slide slide = new Slide(SlideLayoutType.Blank);
        presentation.Slides.Add(slide);

        // Insert a chart on the slide.
        Chart chart = new Chart();
        slide.Shapes.Add(chart);

        // Set chart size to match the slide.
        chart.Width = presentation.SlideSize.Width;
        chart.Height = presentation.SlideSize.Height;

        // Create a pie series with arguments and values.
        PieSeries series = new PieSeries();
        series.Arguments = new ChartStringData(new string[] { "Category 1", "Category 2", "Category 3", "Category 4", "Category 5" });
        series.Values = new ChartNumericData(new double[] { 5.3, 6.1, 3.2, 7.5, 4.3 });
        series.CustomDataPoints[0] = new DataPoint { Fill = new SolidFill(Color.Pink) };
        series.CustomDataPoints[1] = new DataPoint { Fill = new SolidFill(Color.DeepPink) };
        series.CustomDataPoints[2] = new DataPoint { Fill = new SolidFill(Color.HotPink) };
        series.CustomDataPoints[3] = new DataPoint { Fill = new SolidFill(Color.LightPink) };
        series.CustomDataPoints[4] = new DataPoint { Fill = new SolidFill(Color.Magenta) };

        // Add the series to the chart.
        chart.Series.Add(series);

        // Show data labels.
        series.DataLabels.ShowValue = true;

        // Set the first slice angle.
        PieChartView view = chart.Views[0] as PieChartView;
        if (view != null) {
            view.FirstSliceAngle = 90;
        }

        // Save the presentation.
        var outputPath = @"D:\presentation.pptx";
        using FileStream outputStream = new(outputPath, FileMode.Create, FileAccess.Write, FileShare.None);
        presentation.SaveDocument(outputStream);
    }
}

VB.NET

Imports DevExpress.Docs.Office
Imports DevExpress.Docs.Presentation
Imports System.Drawing
Imports System.IO

Namespace PresentationApiSample
    Public Module Program
        Public Sub Main(ByVal args As String())
            ' Create a presentation.
            Dim presentation As New Presentation()

            ' Reset the slide collection.
            presentation.Slides.Clear()

            ' Add a blank slide.
            Dim slide As New Slide(SlideLayoutType.Blank)
            presentation.Slides.Add(slide)

            ' Insert a chart on the slide.
            Dim chart As New Chart()
            slide.Shapes.Add(chart)

            ' Set chart size to match the slide.
            chart.Width = presentation.SlideSize.Width
            chart.Height = presentation.SlideSize.Height

            ' Create a pie series with arguments and values.
            Dim series As New PieSeries()
            series.Arguments = New ChartStringData(New String() {
                "Category 1", "Category 2", "Category 3", "Category 4", "Category 5"
            })
            series.Values = New ChartNumericData(New Double() {5.3, 6.1, 3.2, 7.5, 4.3})
            series.CustomDataPoints(0) = New DataPoint() With {.Fill = New SolidFill(Color.Pink)}
            series.CustomDataPoints(1) = New DataPoint() With {.Fill = New SolidFill(Color.DeepPink)}
            series.CustomDataPoints(2) = New DataPoint() With {.Fill = New SolidFill(Color.HotPink)}
            series.CustomDataPoints(3) = New DataPoint() With {.Fill = New SolidFill(Color.LightPink)}
            series.CustomDataPoints(4) = New DataPoint() With {.Fill = New SolidFill(Color.Magenta)}

            ' Add the series to the chart.
            chart.Series.Add(series)

            ' Show data labels.
            series.DataLabels.ShowValue = True

            ' Set the first slice angle.
            Dim view As PieChartView = TryCast(chart.Views(0), PieChartView)
            If view IsNot Nothing Then
                view.FirstSliceAngle = 90
            End If

            ' Save the presentation.
            Dim outputPath As String = "D:\presentation.pptx"
            Using outputStream As New FileStream(outputPath, FileMode.Create, FileAccess.Write, FileShare.None)
                presentation.SaveDocument(outputStream)
            End Using
        End Sub
    End Module
End Namespace