SeriesPoint.ToolTipHint Property

Gets or sets the data that represents the content (text, image, etc.) of the tooltip’s hint for a series point.

Namespace: DevExpress.Xpf.Charts

Assembly: DevExpress.Xpf.Charts.v23.2.dll

NuGet Package: DevExpress.Wpf.Charts

Declaration

C#

public object ToolTipHint { get; set; }

VB.NET

Public Property ToolTipHint As Object

Property Value

Type	Description
Object	A Object value that is the content of the tooltip’s hint.

Example

This example shows how to add an image to a series points’ tooltip, and format the tooltip text.

• Initialize the SeriesPoint.ToolTipHint property with an object that specifies point-related information.

• To define a template that specifies the tooltip appearance, assign a DataTemplate object to the Series.ToolTipPointTemplate property.

Markup:

XAML

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:SeriesPointTooltip"
        xmlns:dxc="http://schemas.devexpress.com/winfx/2008/xaml/charts" 
        x:Class="SeriesPointTooltip.MainWindow"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800" Loaded="Window_Loaded">
    <Grid>
        <dxc:ChartControl CrosshairEnabled="False" 
                          ToolTipEnabled="True">
            <dxc:XYDiagram2D>
                <dxc:BarSideBySideSeries2D x:Name="series" DisplayName="Series" >
                    <dxc:BarSideBySideSeries2D.ToolTipPointTemplate>
                        <DataTemplate>
                            <StackPanel>
                                <Image Source="{Binding Hint.Image}"/>
                                <Label Content="{Binding Hint.Text}"/>                                
                            </StackPanel>
                        </DataTemplate>
                    </dxc:BarSideBySideSeries2D.ToolTipPointTemplate>
                </dxc:BarSideBySideSeries2D>
            </dxc:XYDiagram2D>
        </dxc:ChartControl>
    </Grid>
</Window>

Code-Behind:

C#

using DevExpress.Xpf.Charts;
using System;
using System.Windows;
using System.Windows.Media.Imaging;

namespace SeriesPointTooltip {
    public partial class MainWindow : Window {
        int PointsCount = 10;
        public MainWindow() {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e) {
            Random rand = new Random();
            BitmapImage image = new BitmapImage(new Uri(@"..\..\Images\image1.png", UriKind.RelativeOrAbsolute));

            for (int i = 1; i <= PointsCount; i++) {
                int value = rand.Next(5, 20);
                series.Points.Add(new SeriesPoint {
                    NumericalArgument = i,
                    Value = value,
                    ToolTipHint = new {
                        Text = $"Argument: {i}{Environment.NewLine}Value: {value}",
                        Image = image
                    }
                });
            }
        }
    }
}

VB.NET

Imports DevExpress.Xpf.Charts
Imports System
Imports System.Windows
Imports System.Windows.Media.Imaging

Namespace SeriesPointTooltip
    Public Partial Class MainWindow
        Inherits Window
        Private PointsCount = 10
        Public Sub New()
            InitializeComponent()
        End Sub
        Private Sub Window_Loaded(ByVal sender As Object, ByVal e As RoutedEventArgs)
            Dim rand As Random = New Random()
            Dim image As BitmapImage = New BitmapImage(New Uri("..\..\Images\image1.png", UriKind.RelativeOrAbsolute))

            For i = 1 To PointsCount
                Dim value = rand.[Next](5, 20)
                series.Points.Add(New SeriesPoint With {
                    .NumericalArgument = i,
                    .Value = value,
                    .ToolTipHint = New With {
                        .Text = $"Argument: {i}{Environment.NewLine}Value: {value}",
                        .Image = image
                    }
                })
            Next
        End Sub
    End Class
End Namespace