======Метод IndexerEventHandler.BeginInvoke(Object, IndexerEventArgs, AsyncCallback, Object)======
  * **Пространство имен:** [[developers:references:topomatic.foundationclasses.undo|Topomatic.FoundationClasses.Undo]]
  * **Сборка:** Topomatic.FoundationClasses (в Topomatic.FoundationClasses.dll)
=====Синтаксис=====
<code csharp>public virtual IAsyncResult BeginInvoke(object sender, IndexerEventArgs e, AsyncCallback callback, object object)</code>
**Параметры**
  * //sender//
    * Тип: [[developers:references:system.object|System.Object]]

  * //e//
    * Тип: [[developers:references:topomatic.foundationclasses.undo.indexereventargs|Topomatic.FoundationClasses.Undo.IndexerEventArgs]]

  * //callback//
    * Тип: [[developers:references:system.asynccallback|System.AsyncCallback]]

  * //object//
    * Тип: [[developers:references:system.object|System.Object]]

**Возвращаемое значение**
  * Тип: [[developers:references:system.iasyncresult|System.IAsyncResult]]