======Метод GeologyLines.IndexOf(GeologyLine)======
  * **Пространство имен:** [[developers:references:topomatic.glg.permafrost|Topomatic.Glg.Permafrost]]
  * **Сборка:** Topomatic.Glg (в Topomatic.Glg.dll)
=====Синтаксис=====
<code csharp>public virtual int IndexOf(GeologyLine item)</code>
**Параметры**
  * //item//
    * Тип: [[developers:references:topomatic.glg.permafrost.geologyline|Topomatic.Glg.Permafrost.GeologyLine]]

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