NinjaScript > Language Reference > Add On > NinjaTrader Controls

Definition

IntervalSelector is as a UI element users can interact with for selecting intervals. This can be used with interval linking between windows.

Cleanup()	Disposes of the IntervalSelector (Note: calling the NTTabPage base.Cleanup() is sufficient to clean up this control)
Interval	A BarsPeriod representing the interval currently selected
IntervalChanged	Event handler for when the interval changed

This example demonstrates how to use the interval selector and properly link its behavior to windows linking.

C#
private IntervalSelector intervalSelector; private DependencyObject LoadXAML() { // Note: pageContent (not demonstrated in this example) is the page content of the XAML // Find the Interval selector intervalSelector = LogicalTreeHelper.FindLogicalNode(pageContent, "intervalSelector") as IntervalSelector; if (intervalSelector != null) intervalSelector.IntervalChanged += OnIntervalChanged; } // This method is fired when our interval selector changes intervals private void OnIntervalChanged(object sender, BarsPeriodEventArgs e) { if (e.BarsPeriod == null) return; } /* IIntervalProvider member. Required if you want to use the interval linker mechanism on this window. No functionality has been linked to the interval linker in this sample. */ public BarsPeriod BarsPeriod { get; set; } // NOTE: Don't forget to clean up resources and unsubscribe to events // Called by TabControl when tab is being removed or window is closed public override void Cleanup() { // Clean up our resources if (intervalSelector != null) intervalSelector.IntervalChanged -= OnIntervalChanged; base.Cleanup(); }

private IntervalSelector intervalSelector;

private DependencyObject LoadXAML()

{

// Note: pageContent (not demonstrated in this example) is the page content of the XAML

// Find the Interval selector

intervalSelector = LogicalTreeHelper.FindLogicalNode(pageContent, "intervalSelector") as IntervalSelector;

if (intervalSelector != null)

intervalSelector.IntervalChanged += OnIntervalChanged;

}

// This method is fired when our interval selector changes intervals

private void OnIntervalChanged(object sender, BarsPeriodEventArgs e)

{

if (e.BarsPeriod == null)

return;

}

/* IIntervalProvider member. Required if you want to use the interval linker mechanism on this window.

No functionality has been linked to the interval linker in this sample. */

public BarsPeriod BarsPeriod { get; set; }

// NOTE: Don't forget to clean up resources and unsubscribe to events

// Called by TabControl when tab is being removed or window is closed

public override void Cleanup()

{

// Clean up our resources

if (intervalSelector != null)

intervalSelector.IntervalChanged -= OnIntervalChanged;

base.Cleanup();

}

XAML
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:Tools="clr-namespace:NinjaTrader.Gui.Tools;assembly=NinjaTrader.Gui" xmlns:AccountPerformance="clr-namespace:NinjaTrader.Gui.AccountPerformance;assembly=NinjaTrader.Gui" xmlns:AccountData="clr-namespace:NinjaTrader.Gui.AccountData;assembly=NinjaTrader.Gui" xmlns:AtmStrategy="clr-namespace:NinjaTrader.Gui.NinjaScript.AtmStrategy;assembly=NinjaTrader.Gui"> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto"/> <ColumnDefinition Width="*"/> </Grid.ColumnDefinitions> <Tools:IntervalSelector x:Name="intervalSelector" Grid.Column="0" HorizontalAlignment="Left"/> </Grid>

<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:Tools="clr-namespace:NinjaTrader.Gui.Tools;assembly=NinjaTrader.Gui"

xmlns:AccountPerformance="clr-namespace:NinjaTrader.Gui.AccountPerformance;assembly=NinjaTrader.Gui"

xmlns:AccountData="clr-namespace:NinjaTrader.Gui.AccountData;assembly=NinjaTrader.Gui"

xmlns:AtmStrategy="clr-namespace:NinjaTrader.Gui.NinjaScript.AtmStrategy;assembly=NinjaTrader.Gui">

<Grid>

<Grid.ColumnDefinitions>

</Grid.ColumnDefinitions>

<Tools:IntervalSelector x:Name="intervalSelector" Grid.Column="0" HorizontalAlignment="Left"/>

</Grid>