QuantityUpDown

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Definition

QuantityUpDown can be used as a UI element users can interact with for selecting quantity.

Events and Properties

PropertyDescription
ValueAn int representing the quantity

Examples

This example demonstrates how to use the quantity up/down selector and properly link its behavior with the ATM strategy and TIF selectors.

private QuantityUpDown qudSelector;
private TifSelector tifSelector;
private AtmStrategy.AtmStrategySelector atmStrategySelector;
private DependencyObject LoadXAML()
{
// Note: pageContent (not demonstrated in this example) is the page content of the XAML
// Find the Quantity Up-Down selector
qudSelector = LogicalTreeHelper.FindLogicalNode(pageContent, "qudSelector") as QuantityUpDown;
// Find the TIF selector
tifSelector = LogicalTreeHelper.FindLogicalNode(pageContent, "tifSelector") as TifSelector;
// Be sure to bind our account selector to our TIF selector to ensure proper functionality
tifSelector.SetBinding(TifSelector.AccountProperty, new Binding { Source = accountSelector,
Path = new PropertyPath("SelectedAccount") });
// When our TIF selector's selection changes
tifSelector.SelectionChanged += (o, args) =>
{
// Change the selected TIF in the ATM strategy too
if (atmStrategySelector.SelectedAtmStrategy != null)
atmStrategySelector.SelectedAtmStrategy.TimeInForce = tifSelector.SelectedTif;
};
// Find ATM Strategy selector and attach event handler
atmStrategySelector = LogicalTreeHelper.FindLogicalNode(pageContent, "atmStrategySelector") as AtmStrategy.AtmStrategySelector;
atmStrategySelector.Id = Guid.NewGuid().ToString("N");
if (atmStrategySelector != null)
atmStrategySelector.CustomPropertiesChanged += OnAtmCustomPropertiesChanged;
// Be sure to bind our account selector to our ATM strategy selector to ensure proper functionality
atmStrategySelector.SetBinding(AtmStrategy.AtmStrategySelector.AccountProperty,
new Binding { Source = accountSelector, Path = new PropertyPath("SelectedAccount") });
// When our ATM selector's selection changes
atmStrategySelector.SelectionChanged += (o, args) =>
{
if (atmStrategySelector.SelectedItem == null)
return;
if (args.AddedItems.Count > 0)
{
// Change the selected TIF in our TIF selector too
AtmStrategy selectedAtmStrategy = args.AddedItems[0] as AtmStrategy;
if (selectedAtmStrategy != null)
tifSelector.SelectedTif = selectedAtmStrategy.TimeInForce;
}
};
}
private void OnAtmCustomPropertiesChanged(object sender, NinjaScript.AtmStrategy.CustomPropertiesChangedEventArgs args)
{
// Adjust our TIF and Quantity selectors to the new ATM strategy values
tifSelector.SelectedTif = args.NewTif;
qudSelector.Value = args.NewQuantity;
}
// 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
base.Cleanup();
}
<page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:accountdata="clr-namespace:NinjaTrader.Gui.AccountData;assembly=NinjaTrader.Gui" xmlns:accountperformance="clr-namespace:NinjaTrader.Gui.AccountPerformance;assembly=NinjaTrader.Gui" xmlns:atmstrategy="clr-namespace:NinjaTrader.Gui.NinjaScript.AtmStrategy;assembly=NinjaTrader.Gui" xmlns:tools="clr-namespace:NinjaTrader.Gui.Tools;assembly=NinjaTrader.Gui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<grid>
<grid.columndefinitions>
<columndefinition width="Auto"></columndefinition>
<columndefinition width="Auto"></columndefinition>
<columndefinition width="*"></columndefinition>
</grid.columndefinitions>
<tools:quantityupdown grid.column="0" value="1" x:name="qudSelector"></tools:quantityupdown>
<tools:tifselector grid.column="1" x:name="tifSelector">
<atmstrategy:atmstrategyselector grid.column="2" linkedquantity="{Binding Value,
ElementName=qudSelector, Mode=OneWay}" x:name="atmStrategySelector"></atmstrategy:atmstrategyselector>
</tools:tifselector></grid>
</page>