WPF – pass multiple parameters to a Command

	public class SendCommand : ICommand
	{
	public void Execute(object parameter)
	{
	var labels = ((object[]) parameter).OfType<Label>();
	}

	public bool CanExecute(object parameter)
	{
	return true;
	}

	public event EventHandler CanExecuteChanged = delegate {};
	}

	public partial class MainWindow : Window
	{
	public MainWindow()
	{
	InitializeComponent();
	DataContext = this;
	SendCommand = new SendCommand();
	}

	public ICommand SendCommand { get; set; }
	}

	public class PassThroughConverter : IMultiValueConverter
	{
	public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
	{
	return values.ToArray();
	}

	public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
	{
	throw new NotImplementedException();
	}
	}

by GitHub

	<Window x:Class="WpfApplication5.MainWindow"
	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:wpfApplication5="clr-namespace:WpfApplication5"
	Title="MainWindow" Height="350" Width="525">
	<Window.Resources>
	<wpfApplication5:PassThroughConverter x:Key="PassthroughConverter" />
	</Window.Resources>
	<Grid>
	<StackPanel>
	<Label Name="Greeting">Hello</Label>
	<Label Name="Farewell">Goodbye</Label>
	<Button Command="{Binding SendCommand}">Hit me
	<Button.CommandParameter>
	<MultiBinding Converter="{StaticResource PassthroughConverter}">
	<Binding Path="." ElementName="Greeting"></Binding>
	<Binding Path="." ElementName="Farewell"></Binding>
	</MultiBinding>
	</Button.CommandParameter>
	</Button>
	</StackPanel>
	</Grid>
	</Window>

by GitHub