======Метод DwgCollection<DwgLayersFilterEquation>.IndexOf(DwgLayersFilterEquation)======
  * **Пространство имен:** [[developers:references:topomatic.dwg|Topomatic.Dwg]]
  * **Сборка:** Topomatic.Dwg (в Topomatic.Dwg.dll)
=====Синтаксис=====
<code csharp>public int IndexOf(DwgLayersFilterEquation obj)</code>
**Параметры**
  * //obj//
    * Тип: [[developers:references:topomatic.dwg.dwglayersfilterequation|Topomatic.Dwg.DwgLayersFilterEquation]]

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