/// <summary>
/// The invoke executing.
/// </summary>
/// <param name="args">
/// The args.
/// </param>
private void InvokeExecuting(CancelCommandEventArgs args)
{
CancelCommandEventHandler executing = Executing;
if (executing != null)
{
executing(this, args);
}
}
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>
public virtual void DoExecute(object param)
{
// Get copies of the two event handlers we'll be using.
// We get them here to protect against the event timing anti-pattern.
CancelCommandEventHandler executing = Executing;
CommandEventHandler executed = Executed;
// Do we have an 'executing' event?
if (executing != null)
{
// Call the event.
CancelCommandEventArgs args =
new CancelCommandEventArgs()
{
Parameter = param
};
executing(this, args);
// If the event has been cancelled, bail now.
if (args.Cancel)
{
return;
}
}
// Call the action or the parameterized action, whichever has been set.
if (action != null)
{
action();
}
else if (parameterizedAction != null)
{
parameterizedAction(param);
}
// Call the executed event.
if (executed != null)
{
executed(this, new CommandEventArgs()
{
Parameter = param
});
}
}