/// <summary>
/// Extends BeginInvoke so that when a state object is not needed, null does not need to be passed.
/// <example>
/// labelediteventhandler.BeginInvoke(sender, e, callback);
/// </example>
/// </summary>
public static IAsyncResult BeginInvoke(this LabelEditEventHandler labelediteventhandler, Object sender, LabelEditEventArgs e, AsyncCallback callback)
{
if (labelediteventhandler == null)
{
throw new ArgumentNullException("labelediteventhandler");
}
return(labelediteventhandler.BeginInvoke(sender, e, callback, null));
}
/// <summary>
/// ラベル変更時にメッセージボックスを表示する
/// </summary>
/// <param name="listView">リストビュー</param>
static void LabelEditEvent(ListView listView)
{
LabelEditEventHandler handler = null;
handler = delegate
{
MessageBox.Show("");
listView.BeginInvoke((MethodInvoker) delegate
{
listView.AfterLabelEdit -= handler;
});
};
listView.AfterLabelEdit += handler;
}