In MainWindow la bind del comando funziona correttamente. In UserControl1 non funziona. Nota che il datacontext è impostato correttamente come evidenziato dal contenuto del pulsante che è il risultato di un binding.Come utilizzare i collegamenti dei comandi nei controlli utente in wpf?
Non sto cercando di associare il comando in usercontrol a un comando in mainwindow o altri trucchi del genere. Sto solo cercando di replicare ciò che ho fatto in MainWindow in UserControl1.
MainWindow XAML
<StackPanel>
<Button Content="Click Here" Command="{Binding ClickHereCommand}" Height="25" Width="90"></Button>
<local:UserControl1></local:UserControl1>
</StackPanel>
Codice MainWindow Dietro
public partial class MainWindow : Window
{
public static RoutedCommand ClickHereCommand { get; set; }
public MainWindow()
{
InitializeComponent();
this.DataContext = this;
ClickHereCommand = new RoutedCommand();
CommandBindings.Add(new CommandBinding(ClickHereCommand, ClickHereExecuted));
}
public void ClickHereExecuted(object sender, ExecutedRoutedEventArgs e)
{
System.Windows.MessageBox.Show("hello");
}
}
UserControl XAML
<UserControl x:Class="CommandBindingTest.UserControl1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300" x:Name="root">
<Grid DataContext="{Binding ElementName=root}" >
<Button Content="{Binding ButtonContent}" Command="{Binding ClickHereCommand}" Height="25" Width="90"></Button>
</Grid>
</UserControl>
codice UserControl Dietro
public partial class UserControl1 : UserControl, INotifyPropertyChanged
{
private string _ButtonContent;
public string ButtonContent
{
get { return _ButtonContent; }
set
{
if (_ButtonContent != value)
{
_ButtonContent = value;
OnPropertyChanged("ButtonContent");
}
}
}
public static RoutedCommand ClickHereCommand { get; set; }
public UserControl1()
{
InitializeComponent();
ClickHereCommand = new RoutedCommand();
CommandBindings.Add(new CommandBinding(ClickHereCommand, ClickHereExecuted));
ButtonContent = "Click Here";
}
public void ClickHereExecuted(object sender, ExecutedRoutedEventArgs e)
{
System.Windows.MessageBox.Show("hello from UserControl1");
}
#region INotifyPropertyChanged Members
public event PropertyChangedEventHandler PropertyChanged;
public void OnPropertyChanged(string name)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(name));
}
}
#endregion
}
Stai controllando la finestra di output per errori? Ci sono? –
@BigDaddy Nessun errore. – Sam