<ig:XamDataChart x:Name="Chart"
IsHorizontalZoomEnabled="True"
IsVerticalZoomEnabled="True">
</ig:XamDataChart>
This topic demonstrates, with code examples, the navigation use properties in the XamDataChart™ control and their use.
The following table lists the topics required as a prerequisite to understanding this topic.
This topic contains the following sections
In the XamDataChart control, chart navigation is disabled by default. Follow the instructions in the this section in order to enable it. The property configuration shown in the Recommended Value column in the table below, enables chart navigation and displays the navigation zoom bars in the chart.
The following code snippet demonstrates how to enable chart navigation in the XamDataChart control.
In XAML:
<ig:XamDataChart x:Name="Chart"
IsHorizontalZoomEnabled="True"
IsVerticalZoomEnabled="True">
</ig:XamDataChart>
In Visual Basic:
Dim chart As New XamDataChart() chart.IsHorizontalZoomEnabled = true chart.IsVerticalZoomEnabled = true
In C#:
var chart = new XamDataChart(); chart.IsHorizontalZoomEnabled = true; chart.IsVerticalZoomEnabled = true;
Sometimes, you may want to allow multiple modifier keys to trigger the behavior. To achieve this you should handle the XamDataChart's PreviewKeyDown event and write some logic to change the DragModifier or PanModifier based on the key being pressed. Please see the code snipper below for an example.
In C#:
private void xamDataChart1_PreviewKeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.LeftShift | e.Key == Key.RightShift)
{
(sender as XamDataChart).DragModifier = ModifierKeys.Shift;
}
if (e.Key == Key.LeftCtrl | e.Key == Key.RightCtrl)
{
(sender as XamDataChart).DragModifier = ModifierKeys.Control;
}
}In Visual Basic:
Public Sub XamDataChart1_PreviewKeyDown(ByVal sender As Object, ByVal e As KeyEventArgs)
If e.Key = Key.LeftShift OrElse e.Key = Key.RightShift Then
CType(sender, XamDataChart).DragModifier = ModifierKeys.Shift
End If
If e.Key = Key.LeftCtrl OrElse e.Key = Key.RightCtrl Then
CType(sender, XamDataChart).DragModifier = ModifierKeys.Control
End If
End SubThe following topics provide additional information related to this topic.