public DelegateCommand <TParameter> CreateCommand <TCommandType>()
where TCommandType : class, ICommand <TParameter>
{
TCommandType cmd = Activator.CreateInstance(typeof(TCommandType)) as TCommandType;
return(new DelegateCommand <TParameter>(p => cmd.Execute(p), p => cmd.CanExecute(p)));
}
/// <summary>
/// Gets the instance
/// </summary>
/// <typeparam name="TCommandType">The command type</typeparam>
/// <returns>a new command</returns>
public TCommandType Get <TCommandType>() where TCommandType : CompositeCommand, new()
{
this._compositeCommands.TryGetValue(typeof(TCommandType), out var command);
if (command == null)
{
command = new TCommandType();
this._compositeCommands.Add(typeof(TCommandType), command);
}
return((TCommandType)command);
}
public DelegateCommand <TParameter> CreateCommand <TCommandType>(params object[] args) where TCommandType : class, ICommand <TParameter>
{
TCommandType cmd = Activator.CreateInstance(typeof(TCommandType), args) as TCommandType;
DelegateCommand <TParameter> delegateCommand = new DelegateCommand <TParameter>(p => cmd.Execute(p), p => cmd.CanExecute(p));
INotifyParametersChangedCommand notifyParametersChangedCommand = cmd as INotifyParametersChangedCommand;
if (notifyParametersChangedCommand != null)
{
WeakEventManager <INotifyParametersChangedCommand, EventArgs> .AddHandler(notifyParametersChangedCommand, nameof(notifyParametersChangedCommand.ParametersChanged), (sender, eventArgs) => delegateCommand.RaiseCanExecuteChanged());
}
return(delegateCommand);
}
