Is there a version of RelayCommand, since CommandManager is not available in win8 metro apps?
There is a version here.
using System;
using System.Diagnostics;
#if METRO
using Windows.UI.Xaml.Input;
using System.Windows.Input;
#else
using System.Windows.Input;
#endif
namespace MyToolkit.MVVM
{
#if METRO
public class RelayCommand : NotifyPropertyChanged, ICommand
#else
public class RelayCommand : NotifyPropertyChanged, ICommand
#endif
{
private readonly Action execute;
private readonly Func canExecute;
public RelayCommand(Action execute)
: this(execute, null) { }
public RelayCommand(Action execute, Func canExecute)
{
if (execute == null)
throw new ArgumentNullException("execute");
this.execute = execute;
this.canExecute = canExecute;
}
bool ICommand.CanExecute(object parameter)
{
return CanExecute;
}
public void Execute(object parameter)
{
execute();
}
public bool CanExecute
{
get { return canExecute == null || canExecute(); }
}
public void RaiseCanExecuteChanged()
{
RaisePropertyChanged("CanExecute");
if (CanExecuteChanged != null)
CanExecuteChanged(this, new EventArgs());
}
public event EventHandler CanExecuteChanged;
}
public class RelayCommand : ICommand
{
private readonly Action execute;
private readonly Predicate canExecute;
public RelayCommand(Action execute)
: this(execute, null)
{
}
public RelayCommand(Action execute, Predicate canExecute)
{
if (execute == null)
throw new ArgumentNullException("execute");
this.execute = execute;
this.canExecute = canExecute;
}
[DebuggerStepThrough]
public bool CanExecute(object parameter)
{
return canExecute == null || canExecute((T)parameter);
}
public void Execute(object parameter)
{
execute((T)parameter);
}
public void RaiseCanExecuteChanged()
{
if (CanExecuteChanged != null)
CanExecuteChanged(this, new EventArgs());
}
public event EventHandler CanExecuteChanged;
}
}