protected void InvokeExecuting(CancelCommandEventArgs args)
{
CancelCommandEventHandler executing = Executing;
// Call the executed event.
if (executing != null)
{
executing(this, args);
}
}
/// <summary>
/// Executes the command.
/// </summary>
/// <param name="param">The param.</param>
protected void DoExecute(object param)
{
// Invoke the executing command, allowing the command to be cancelled.
var args =
new CancelCommandEventArgs {
Parameter = param, Cancel = false
};
InvokeExecuting(args);
// If the event has been cancelled, bail now.
if (args.Cancel)
{
return;
}
// Call the action or the parameterized action, whichever has been set.
InvokeAction(param);
// Call the executed function.
InvokeExecuted(new CommandEventArgs {
Parameter = param
});
}