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Color de fondo alternativo en Listview XAML

Question

Estoy usando un listView basado en itemTemplate. Así que necesito en mi plantilla para alternar el color de fondo:
- primera fila: blanco
- segunda fila: gris
- tercera fila: blanco
- adelante: gris

esta es mi plantilla

 <DataTemplate x:Key="ItemFlight" >
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Border Background="#28AADB" Margin="2">
<Image Source="{Binding Path=IsArrival, Converter={StaticResource BooleanToImageDisplayConverter}}" Width="30" Height="30" VerticalAlignment="Center" Margin="5"/>
</Border>
<Grid Grid.Column="1" VerticalAlignment="Center">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="4*"/>
<ColumnDefinition Width="3*"/>
<ColumnDefinition Width="3*"/>
<ColumnDefinition Width="6*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<TextBlock Text="{Binding FlightName}" FontWeight="Bold" Grid.Column="0" Grid.Row="0" Margin="10" Style="{StaticResource MyTextBlockStyle}"/>
<TextBlock Text="{Binding ArrivalOrDepartDateTime, Converter={StaticResource DateTimeConverter}}" FontWeight="Bold" Grid.Column="0" Grid.Row="1" Margin="10" Style="{StaticResource MyTextBlockStyle}"/>
<TextBlock Text="{Binding Terminal, Converter={StaticResource StringUpperConverter}}" Grid.Column="1" Grid.Row="0" Margin="10" Visibility="{Binding Path=IsArrival,Converter={StaticResource BooleanToVisibilityReverseConverter}}" Style="{StaticResource MyTextBlockStyle}"/>
<TextBlock Text="{Binding CityInfo.Name}" Grid.Column="1" Grid.Row="0" Margin="10" Visibility="{Binding Path=IsArrival,Converter={StaticResource BooleanToVisibilityConverter}}" Style="{StaticResource MyTextBlockStyle}"/>
<TextBlock Text="{Binding DepartureTime}" Grid.Column="1" Grid.Row="1" Margin="10" Style="{StaticResource MyTextBlockStyle}"/>
<TextBlock Text="{Binding CityInfo.Name}" Grid.Column="2" Grid.Row="0" Margin="10" Style="{StaticResource MyTextBlockStyle}" Visibility="{Binding Path=IsArrival,Converter={StaticResource BooleanToVisibilityReverseConverter}}"/>
<TextBlock Text="{Binding Terminal, Converter={StaticResource StringUpperConverter}}" Visibility="{Binding Path=IsArrival,Converter={StaticResource BooleanToVisibilityConverter}}" Grid.Column="2" Grid.Row="0" Margin="10" Style="{StaticResource MyTextBlockStyle}"/>
<TextBlock Text="{Binding ArrivalTime}" Grid.Column="2" Grid.Row="1" Margin="10" Style="{StaticResource MyTextBlockStyle}"/>
<TextBlock Text="{Binding Status}" Grid.Column="3" Grid.Row="0" Grid.RowSpan="2" Margin="15" Style="{StaticResource MyTextBlockStyle}" Foreground="#EA6A1E" FontSize="20" TextWrapping="Wrap" />
</Grid>
</Grid>
</DataTemplate>

¿Cómo puedo hacer esto por favor?

Answer 1

Debe usar la propiedad AlternationCount y funciona en ListBox, ListView o cualquier otro control que herede de ItemsControl. La definición de propiedad y dos ejemplos se incluyen en
https://msdn.microsoft.com/en-us/library/system.windows.controls.itemscontrol.alternationcount%28v=vs.110%29.aspx )

Answer 2

Intenté esto y funciona para mí.

<Window x:Class="TryResponses.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:vm="clr-namespace:TryResponses"
xmlns:system="clr-namespace:System;assembly=mscorlib"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<vm:MainWindowViewModel x:Key="MainWindowViewModel" />
</Window.Resources>
<Grid Background="LightGray" DataContext="{StaticResource MainWindowViewModel}">
<Grid.Resources>
<Style TargetType="ListViewItem">
<Style.Triggers>
<Trigger Property="ItemsControl.AlternationIndex" Value="0">
<Setter Property="Background" Value="LightBlue" />
</Trigger>
<Trigger Property="ItemsControl.AlternationIndex" Value="1">
<Setter Property="Background" Value="LightGray" />
</Trigger>
</Style.Triggers>
</Style>
<DataTemplate DataType="system:String">
<!-- put your data template here -->
</DataTemplate>
</Grid.Resources>
<ListView ItemsSource="{Binding Items}" AlternationCount="2" />
</Grid>

Espero que esto sea de ayuda.

Saludos

Claude