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();
}
}
<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>
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