MapPie.Segments Property

Gets or sets segments of a map pie.

Namespace: DevExpress.XtraMap

Assembly: DevExpress.XtraMap.v18.2.dll

Declaration

C#

[DefaultValue(null)]
public PieSegmentCollection Segments { get; set; }

VB.NET

<DefaultValue(Nothing)>
Public Property Segments As PieSegmentCollection

Property Value

Type	Default	Description
PieSegmentCollection	*null*	A PieSegmentCollection object that is a collection of map path segments.

Example

Note

A complete sample project is available at https://github.com/DevExpress-Examples/how-to-customize-map-pie-parameters-t202713

Form1.cs

char letter = 'A';
double defaultValue = 10;
MapPie pie;

private void Form1_Load(object sender, EventArgs e) {
    MapItemStorage storage = new MapItemStorage();
    pie = new MapPie() {
        Location = new GeoPoint(51.507222, -0.1275),
        Size = 100,
        Argument = "pie",
    };
    pie.Segments.Add(new PieSegment() { Argument = NextLetter(), Value = defaultValue });
    pie.Segments.Add(new PieSegment() { Argument = NextLetter(), Value = defaultValue });
    pie.Segments.Add(new PieSegment() { Argument = NextLetter(), Value = defaultValue });

    storage.Items.Add(pie);

    mapControl1.Layers.Add(new VectorItemsLayer() {
        Data = storage,
        Colorizer = new KeyColorColorizer() {
            ItemKeyProvider = new ArgumentItemKeyProvider(),
            PredefinedColorSchema = PredefinedColorSchema.Palette
        }
    });

    lbRotationDirection.DataSource = Enum.GetValues(typeof(RotationDirection));
    lbSegments.DataSource = pie.Segments;
}

string NextLetter() {
    return letter++.ToString();
}

Form1.vb

Private letter As Char = "A"c
Private defaultValue As Double = 10
Private pie As MapPie

Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) Handles MyBase.Load
    Dim storage As New MapItemStorage()
    pie = New MapPie() With {.Location = New GeoPoint(51.507222, -0.1275), .Size = 100, .Argument = "pie"}
    pie.Segments.Add(New PieSegment() With {.Argument = NextLetter(), .Value = defaultValue})
    pie.Segments.Add(New PieSegment() With {.Argument = NextLetter(), .Value = defaultValue})
    pie.Segments.Add(New PieSegment() With {.Argument = NextLetter(), .Value = defaultValue})

    storage.Items.Add(pie)

    mapControl1.Layers.Add(New VectorItemsLayer() With { _
        .Data = storage, .Colorizer = New KeyColorColorizer() With {.ItemKeyProvider = New ArgumentItemKeyProvider(), .PredefinedColorSchema = PredefinedColorSchema.Palette} _
    })

    lbRotationDirection.DataSource = System.Enum.GetValues(GetType(RotationDirection))
    lbSegments.DataSource = pie.Segments
End Sub

Private Function NextLetter() As String
    Dim tempVar As Char = letter
    letter = ChrW(AscW(letter) + 1)
    Return tempVar.ToString()
End Function

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the Segments property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-customize-map-pie-parameters-t202713/CS/MapPieExample/Form1.cs#L34

    lbRotationDirection.DataSource = Enum.GetValues(typeof(RotationDirection));
    lbSegments.DataSource = pie.Segments;
}

VB.NET

how-to-customize-map-pie-parameters-t202713/VB/MapPieExample/Form1.vb#L28

    lbRotationDirection.DataSource = System.Enum.GetValues(GetType(RotationDirection))
    lbSegments.DataSource = pie.Segments
End Sub