User Interactions in WPF Smith Chart (SfSmithChart)

ToolTip

The ToolTip for data points can be enabled by setting the ShowToolTip property as True. ToolTip displays the duration that is defined by the ToolTipDuration property.

<syncfusion:SfSmithChart x:Name="SmithChart">
     <syncfusion:LineSeries ShowToolTip="True" ToolTipDuration="0:0:3">
     </syncfusion:LineSeries>
 </syncfusion:SfSmithChart>
LineSeries series = new LineSeries();
series.ShowToolTip = true;
series.ToolTipDuration = TimeSpan.FromSeconds(3);
chart.Series.Add(series);

ToolTipTemplate

ToolTipTemplate property allows to customize the default appearance of the tooltip as illustrated in the below code example.

<syncfusion:SfSmithChart x:Name="SmithChart">
   <syncfusion:SfSmithChart.Resources>
   <DataTemplate x:Key="toolTipTemplate">
      <Border CornerRadius="4" Background="{Binding Interior}" BorderBrush="Yellow" BorderThickness="2">
          <Grid HorizontalAlignment="Center" Margin="8,8,8,8">
              <Grid.RowDefinitions>
                  <RowDefinition/>
                  <RowDefinition/>
              </Grid.RowDefinitions>
              <Grid.ColumnDefinitions>
                  <ColumnDefinition/>
                  <ColumnDefinition/>
                  <ColumnDefinition/>
              </Grid.ColumnDefinitions>

              <TextBlock Grid.Row="0" Grid.Column="0" Text="Resistance" Foreground="{Binding ForeColor}" FontSize="13" />
              <TextBlock Grid.Row="0" Grid.Column="1" Text=" : " Foreground="{Binding ForeColor}" FontSize="13" Margin="0,-1,0,0" />
              <TextBlock Grid.Row="0" Grid.Column="2" Text="{Binding Resistance}" Foreground="{Binding ForeColor}" FontSize="13" Margin="3,0,0,0" />
              <TextBlock Grid.Row="1" Grid.Column="0" Text="Reactance" Foreground="{Binding ForeColor}" FontSize="13" />
              <TextBlock Grid.Row="1" Grid.Column="1" Text=" : " Foreground="{Binding ForeColor}" FontSize="13" Margin="0,-1,0,0" />
              <TextBlock Grid.Row="1" Grid.Column="2" Text="{Binding Reactance}" Margin="3,0,0,0" Foreground="{Binding ForeColor}" FontSize="13" />
          </Grid>
      </Border>
  </DataTemplate>
 </syncfusion:SfSmithChart.Resources>

   <syncfusion:LineSeries ShowToolTip="True" ToolTipTemplate="{StaticResource toolTipTemplate}" ShowMarker="True" MarkerType="Custom" MarkerTemplate="{StaticResource Ellipse}" ItemsSource="{Binding Data}" ResistancePath="Resistance" ReactancePath="Reactance">
   </syncfusion:LineSeries>
 </syncfusion:SfSmithChart>
LineSeries series = new LineSeries();
series.ShowToolTip = true;
series.ToolTipTemplate = this.Grid1.Resources["toolTipTemplate"] as DataTemplate;
chart.Series.Add(series);