void connectionService_IsExecutingChanged(object sender, IsExecutingEventArgs e)
{
isExecuting = e.IsExecuting;
CheckEnableCondition();
}
void connectionService_IsExecutingChanged(object sender, IsExecutingEventArgs e)
{
SetEnableCondition(e.IsExecuting);
}
void connectionService_IsExecutingChanged(object sender, IsExecutingEventArgs e)
{
(VisibleCondition as ConcreteCondition).SetCondition(e.IsExecuting);
}