CustomGridLine Tooltip is not working

[Muthukumar]

hi team,
i have a Telerik Radchart. i have bound data for the Line series into that chart. i have enable the  ShowItemToolTips="True" for the series and it was working fine.

Above that i have two custom grid lines. i need to have the tooltip service for the customgridlines. i have tried the ToolTipService.ToolTip="My Tooltip"  but its not working. i guess the lines are not even focused. i cant raise the event when MouseEnter,MouseLeave and MouseLeftButtonDown. here is my code, Thanks in Advance

<Border Grid.Row="3">
                                    <telerik:RadBusyIndicator x:Name="radBusy1"
                                            Background="Transparent"
                                            BorderBrush="Transparent"
                                            Width="Auto" Margin="10,10,40,0"
                                            FontFamily="Calibri" FontSize="14"
                                            Height="300" VerticalAlignment="Top">
                                        <telerik:RadChart x:Name="RadChart1"
                                                ItemsSource="{Binding GasLiftInjectionData}"
                                                Background="{x:Null}"
                                                BorderBrush="{x:Null}"
                                                Margin="2">
                                            <telerik:RadChart.DefaultView>
                                                <telerik:ChartDefaultView
                                                        ChartLegendPosition="Bottom">
                                                    <telerik:ChartDefaultView.ChartTitle>
                                                        <telerik:ChartTitle
                                                                Visibility="Collapsed" />
                                                    </telerik:ChartDefaultView.ChartTitle>
                                                    <telerik:ChartDefaultView.ChartArea>
                                                        <telerik:ChartArea
                                                                LegendName="legend"
                                                                NoDataString="{Binding DataLoading}" LabelFormatBehavior="None">
                                                            <telerik:ChartArea.Annotations>
                                                                <telerik:CustomGridLine ToolTipService.ToolTip="My Tooltip"
                                                                        YIntercept="{Binding GLTargetHigh}"
                                                                        Stroke="Red"
                                                                        StrokeThickness="3" />
                                                                <telerik:CustomGridLine ToolTipService.ToolTip="My Tooltip"
                                                                        YIntercept="{Binding GLTargetLow}"
                                                                        Stroke="Orange"
                                                                        StrokeThickness="3" />
                                                            </telerik:ChartArea.Annotations>

                                                            <telerik:ChartArea.AxisY>
                                                                <telerik:AxisY
                                                                       DefaultLabelFormat="#VAL{0.000}"
                                                                        AutoRange="False"
                                                                        MajorGridLinesVisibility="Visible"
                                                                        MinorGridLinesVisibility="Collapsed"
                                                                        MinValue="{Binding YaxisMinValue}"
                                                                        MaxValue="{Binding YaxisMaxValue}"
                                                                        Step="{Binding YaxisStepValue}"
                                                                        IsLogarithmic="False">
                                                                    <telerik:AxisY.AxisStyles>
                                                                        <telerik:AxisStyles
                                                                                MinorTickLineStyle="{StaticResource MinorTickLineStyle}"
                                                                                TickLineStyle="{StaticResource TickLineStyle}"
                                                                                AxisLineStyle="{StaticResource AxisGridLineStyle}"
                                                                                ItemLabelStyle="{StaticResource YaxisItemLabelStyleGrey}"
                                                                                AlternateStripLineStyle="{StaticResource HorizontalAlternateStripLineStyle}"
                                                                                StripLineStyle="{StaticResource HorizontalStripLineStyle}"
                                                                                GridLineStyle="{StaticResource AxisGridLineStyle}" />
                                                                    </telerik:AxisY.AxisStyles>
                                                                </telerik:AxisY>
                                                            </telerik:ChartArea.AxisY>
                                                            <telerik:ChartArea.AxisX>
                                                                <telerik:AxisX
                                                                        IsDateTime="True"
                                                                        MinValue="{Binding XaxisMinValue}"
                                                                        MaxValue="{Binding XaxisMaxValue}"
                                                                        Step="{Binding XaxisStepValue}"
                                                                        LabelStep="1"
                                                                        DefaultLabelFormat="{Binding GLLabelFormat}"
                                                                        LabelRotationAngle="0"
                                                                        MajorGridLinesVisibility="Visible"
                                                                        MinorTicksVisibility="Visible"
                                                                        AutoRange="False">

                                                                    <i:Interaction.Triggers>
                                                                        <i:EventTrigger
                                                                                EventName="RangeChanged">
                                                                            <i:InvokeCommandAction
                                                                                    Command="{Binding AxisXGridLineCommand}"
                                                                                    CommandParameter="{Binding ElementName=RadChart1}" />
                                                                        </i:EventTrigger>
                                                                    </i:Interaction.Triggers>

                                                                    <telerik:AxisX.AxisStyles>
                                                                        <telerik:AxisStyles
                                                                                AxisLineStyle="{StaticResource AxisGridLineStyle}"
                                                                                ItemLabelStyle="{StaticResource YaxisItemLabelStyleGrey}"
                                                                                TickLineStyle="{StaticResource TickLineStyle}"
                                                                                MinorTickLineStyle="{StaticResource MinorTickLineStyle}"
                                                                                StripLineStyle="{StaticResource HorizontalStripLineStyle}"
                                                                                GridLineStyle="{StaticResource AxisGridLineStyle}" />
                                                                    </telerik:AxisX.AxisStyles>
                                                                </telerik:AxisX>

                                                            </telerik:ChartArea.AxisX>
                                                        </telerik:ChartArea>
                                                    </telerik:ChartDefaultView.ChartArea>

                                                    <telerik:ChartDefaultView.ChartLegend>
                                                        <telerik:ChartLegend
                                                                x:Name="chartLegendTwo"
                                                                Header=""
                                                                UseAutoGeneratedItems="False"
                                                                VerticalAlignment="Center"
                                                                Background="{x:Null}"
                                                                Width="500"
                                                                Height="50"
                                                                BorderBrush="{x:Null}">

                                                            <telerik:ChartLegend.Items>

                                                                <telerik:ChartLegendItem
                                                                        MarkerFill="Yellow"
                                                                        Foreground="Yellow"
                                                                        FontSize="12"
                                                                        FontFamily="Calibri"
                                                                        Style="{StaticResource CustomLegendItem}"
                                                                        Label="Actual" />

                                                                <telerik:ChartLegendItem
                                                                        MarkerFill="Red"
                                                                        Foreground="Red"
                                                                        FontSize="12"
                                                                        FontFamily="Calibri"
                                                                        Style="{StaticResource CustomLegendItem}"
                                                                        Label="High High" />

                                                                <telerik:ChartLegendItem
                                                                        MarkerFill="Orange"
                                                                        Foreground="Orange"
                                                                        Label="Low Low"
                                                                        FontSize="12"
                                                                        FontFamily="Calibri"
                                                                        Style="{StaticResource CustomLegendItem}" />

                                                            </telerik:ChartLegend.Items>

                                                        </telerik:ChartLegend>
                                                    </telerik:ChartDefaultView.ChartLegend>

                                                </telerik:ChartDefaultView>
                                            </telerik:RadChart.DefaultView>
                                            <telerik:RadChart.SeriesMappings>
                                                <telerik:SeriesMapping
                                                        LegendLabel="Actual">
                                                    <telerik:SeriesMapping.SeriesDefinition>
                                                        <telerik:LineSeriesDefinition
                                                                ShowItemToolTips="True"
                                                                ShowPointMarks="True"
                                                                ShowItemLabels="False">
                                                            <telerik:LineSeriesDefinition.Appearance>
                                                                <telerik:SeriesAppearanceSettings
                                                                        Stroke="Yellow"
                                                                        Foreground="Yellow">
                                                                    <telerik:SeriesAppearanceSettings.PointMark>
                                                                        <telerik:PointMarkAppearanceSettings
                                                                                Stroke="Transparent"
                                                                                Fill="Transparent"
                                                                                Shape="Hexagon" />
                                                                    </telerik:SeriesAppearanceSettings.PointMark>
                                                                </telerik:SeriesAppearanceSettings>
                                                            </telerik:LineSeriesDefinition.Appearance>
                                                        </telerik:LineSeriesDefinition>
                                                    </telerik:SeriesMapping.SeriesDefinition>
                                                    <telerik:ItemMapping
                                                            FieldName="WhpValue"
                                                            DataPointMember="YValue" />
                                                    <telerik:ItemMapping
                                                            FieldName="DisplayDateTime"
                                                            DataPointMember="XValue" />
                                                </telerik:SeriesMapping>

                                            </telerik:RadChart.SeriesMappings>
                                        </telerik:RadChart>
                                    </telerik:RadBusyIndicator>
                                </Border>

[Evgenia]

Hello,

Have you seen our help topic which describes this with source code provided?

All the best,
Evgenia
the Telerik team