======Метод AdditionalHorizontalList.IndexOf(AdditionalHorizontal)======
  * **Пространство имен:** [[developers:references:topomatic.sfc.style|Topomatic.Sfc.Style]]
  * **Сборка:** Topomatic.Sfc (в Topomatic.Sfc.dll)
=====Синтаксис=====
<code csharp>public virtual int IndexOf(AdditionalHorizontal item)</code>
**Параметры**
  * //item//
    * Тип: [[developers:references:topomatic.sfc.style.additionalhorizontal|Topomatic.Sfc.Style.AdditionalHorizontal]]

**Возвращаемое значение**
  * Тип: [[developers:references:system.int32|System.Int32]]