======Свойство DirectionAngles.NullValue======
  * **Пространство имен:** [[developers:references:topomatic.srv.compilationsurvey|Topomatic.Srv.CompilationSurvey]]
  * **Сборка:** Topomatic.Srv (в Topomatic.Srv.dll)
=====Синтаксис=====
<code csharp>public DirectionAngle NullValue { get; }</code>
**Значение свойства**
  * Тип: [[developers:references:topomatic.srv.compilationsurvey.directionangle|Topomatic.Srv.CompilationSurvey.DirectionAngle]]