C# Class Microsoft.Practices.Prism.Commands.DelegateCommandBase

An ICommand whose delegates can be attached for Execute and CanExecute. It also implements the IActiveAware interface, which is useful when registering this command in a CompositeCommand that monitors command's activity.

Inheritance: ICommand, IActiveAware

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Méthodes protégées

Méthode	Description
CanExecute ( object parameter ) : bool	Determines if the command can execute with the provided parameter by invoing the Func{Object,Bool} supplied during construction.
DelegateCommandBase ( Action	Createse a new instance of a DelegateCommandBase, specifying both the execute action and the can execute function.
Execute ( object parameter ) : void	Executes the command with the provided parameter by invoking the Action{Object} supplied during construction.
OnCanExecuteChanged ( ) : void	Raises ICommand.CanExecuteChanged on the UI thread so every command invoker can requery ICommand.CanExecute to check if the CompositeCommand can execute.
OnIsActiveChanged ( ) : void	This raises the DelegateCommandBase.IsActiveChanged event.

Private Methods

Méthode	Description
ICommand ( object parameter ) : bool
ICommand ( object parameter ) : void
RaiseCanExecuteChanged ( ) : void

Method Details

CanExecute() protected méthode

Determines if the command can execute with the provided parameter by invoing the Func{Object,Bool} supplied during construction.

protected CanExecute ( object parameter ) : bool
parameter	object	The parameter to use when determining if this command can execute.
Résultat	bool

DelegateCommandBase() protected méthode

Createse a new instance of a DelegateCommandBase, specifying both the execute action and the can execute function.

protected DelegateCommandBase ( Action
executeMethod	Action	The to execute when is invoked.
canExecuteMethod	bool>.Func	The to invoked when is invoked.
Résultat	System

Execute() protected méthode

Executes the command with the provided parameter by invoking the Action{Object} supplied during construction.

protected Execute ( object parameter ) : void
parameter	object
Résultat	void

OnCanExecuteChanged() protected méthode

Raises ICommand.CanExecuteChanged on the UI thread so every command invoker can requery ICommand.CanExecute to check if the CompositeCommand can execute.

protected OnCanExecuteChanged ( ) : void
Résultat	void

OnIsActiveChanged() protected méthode

This raises the DelegateCommandBase.IsActiveChanged event.

protected OnIsActiveChanged ( ) : void
Résultat	void