SparklineViewBase Class

The base class for sparkline views.

Assembly: DevExpress.Sparkline.v24.1.Core.dll

NuGet Package: DevExpress.Sparkline.Core

Declaration

C#
VB.NET

public abstract class SparklineViewBase :
    IXtraSupportShouldSerialize,
    ISparklineInfo

Public MustInherit Class SparklineViewBase
    Implements IXtraSupportShouldSerialize,
               ISparklineInfo

Library	Related API Members
Cross-Platform Class Library	SparklineViewBase.CreateView(SparklineViewType)
WinForms Controls	RepositoryItemSparklineEdit.View
.NET Reporting Tools	XRSparkline.View

Remarks

Each sparkline view is represented by the SparklineViewBase class descendant. To assign a specific view for a sparkline, set the required view to the RepositoryItemSparklineEdit.View property.

Example

This example demonstrates how to create a sparkline control, fill it with data, choose the way to represent this data, and customize the sparkline appearance.

To do this, you should create a SparklineEdit object and assign the datasource object to its BaseEdit.EditValue property. Then, you need to set the appropriate view instance to the SparklineEdit.Properties.View property and customize view properties to meet your requirements.

Note that in this sample, the AreaSparklineView class is used to display area sparklines. To display other sparklines types, use the BarSparklineView, LineSparklineView or WinLossSparklineView classes instead.

Form1.cs
Form1.vb

using System;
using System.Drawing;
using System.Windows.Forms;
using DevExpress.Sparkline;
using DevExpress.XtraEditors;
        private SparklineEdit CreateSparkline() {
            // Create a Sparkline editor and set its dock style.
            SparklineEdit sparkline = new SparklineEdit();
            sparkline.Dock = DockStyle.Fill;

            sparkline.EditValue = CreateData();

            // Create an Area view and assign it to the sparkline.
            AreaSparklineView view = new AreaSparklineView();
            sparkline.Properties.View = view;

            // Customize area appearance.
            view.Color = Color.Aqua;
            view.AreaOpacity = 50;

            // Show markerks.
            view.HighlightStartPoint = true;
            view.HighlightEndPoint = true;
            view.HighlightMaxPoint = true;
            view.HighlightMinPoint = true;
            view.HighlightNegativePoints = true;
            view.SetSizeForAllMarkers(10);

            return sparkline;
        }

        private double[] CreateData() {
            return new double[] { 2, 4, 5, 1, -1, -2, -1, 2, 4, 5, 6, 3, 5, 4, 8, -1, 6 };
        }

Imports System
Imports System.Drawing
Imports System.Windows.Forms
Imports DevExpress.Sparkline
Imports DevExpress.XtraEditors
        Private Function CreateSparkline() As SparklineEdit
            ' Create a Sparkline editor and set its dock style.
            Dim sparkline As New SparklineEdit()
            sparkline.Dock = DockStyle.Fill

            sparkline.EditValue = CreateData()

            ' Create an Area view and assign it to the sparkline.
            Dim view As New AreaSparklineView()
            sparkline.Properties.View = view

            ' Customize area appearance.
            view.Color = Color.Aqua
            view.AreaOpacity = 50

            ' Show markerks.
            view.HighlightStartPoint = True
            view.HighlightEndPoint = True
            view.HighlightMaxPoint = True
            view.HighlightMinPoint = True
            view.HighlightNegativePoints = True
            view.SetSizeForAllMarkers(10)

            Return sparkline
        End Function

        Private Function CreateData() As Double()
            Return New Double() { 2, 4, 5, 1, -1, -2, -1, 2, 4, 5, 6, 3, 5, 4, 8, -1, 6 }
        End Function