/// <summary>
/// Sets the Command and CommandParameter properties to null.
/// </summary>
protected override void OnDetaching()
{
base.OnDetaching();
this.Command = null;
this.CommandParameter = null;
this.commandBehavior = null;
}
private ExecutableCommandBehavior GetOrCreateBehavior()
{
// In case this method is called prior to this action being attached,
// the CommandBehavior would always keep a null target object (which isn't changeable afterwards).
// Therefore, in that case the behavior shouldn't be created and this method should return null.
if (this.commandBehavior == null && this.AssociatedObject != null)
{
this.commandBehavior = new ExecutableCommandBehavior(this.AssociatedObject);
}
return(this.commandBehavior);
}
private ExecutableCommandBehavior GetOrCreateBehavior(UIElement sender)
{
// In case this method is called prior to this action being attached,
// the CommandBehavior would always keep a null target object (which isn't changeable afterwards).
// Therefore, in that case the behavior shouldn't be created and this method should return null.
if (_commandBehavior == null && sender != null)
{
_commandBehavior = new ExecutableCommandBehavior(sender);
}
_commandBehavior.Command = Command;
_commandBehavior.CommandParameter = CommandParameter;
_commandBehavior.AutoEnable = AutoEnable;
return(_commandBehavior);
}
