/// <summary>
/// Extends BeginInvoke so that when a state object is not needed, null does not need to be passed.
/// <example>
/// navigationstoppedeventhandler.BeginInvoke(sender, e, callback);
/// </example>
/// </summary>
public static IAsyncResult BeginInvoke(this NavigationStoppedEventHandler navigationstoppedeventhandler, Object sender, NavigationEventArgs e, AsyncCallback callback)
{
if (navigationstoppedeventhandler == null)
{
throw new ArgumentNullException("navigationstoppedeventhandler");
}
return(navigationstoppedeventhandler.BeginInvoke(sender, e, callback, null));
}
/// <summary>
/// Raises the Stopped event synchronously.
/// </summary>
/// <param name="content">A reference to the object content that is being navigated to.</param>
/// <param name="uri">A URI value representing the navigation content.</param>
private void RaiseNavigationStopped(object content, Uri uri)
{
NavigationStoppedEventHandler eventHandler = this.NavigationStopped;
if (eventHandler != null)
{
NavigationEventArgs eventArgs = new NavigationEventArgs(content, uri);
eventHandler(this, eventArgs);
}
}
