An enumerated type listing AssetProperty Types in Revit. 
   Namespace:   Autodesk.Revit.Utility  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
Syntax
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Members
| Member name | Description | 
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| APT_Unknown | An unknown or unspecified property type. | 
| APT_Properties | Represents Properties. The corresponding AssetProperty sub class is AssetProperties. | 
| APT_Boolean | Represents property Boolean. The corresponding AssetProperty sub class is AssetPropertyBoolean. | 
| APT_Enum | Represents property Enum. The corresponding AssetProperty sub class is AssetPropertyEnum. | 
| APT_Integer | Represents property Integer. The corresponding AssetProperty sub class is AssetPropertyInteger. | 
| APT_Float | Represents property Float. The corresponding AssetProperty sub class is AssetPropertyFloat. | 
| APT_Double | Represents property Double. The corresponding AssetProperty sub class is AssetPropertyDouble. | 
| APT_DoubleArray2d | Represents property 2d Double array. The corresponding AssetProperty sub class is AssetPropertyDoubleArray2d. | 
| APT_DoubleArray3d | Represents property 3d Double array. The corresponding AssetProperty sub class is AssetPropertyDoubleArray3d. | 
| APT_DoubleArray4d | Represents property 4d Double array. The corresponding AssetProperty sub class is AssetPropertyDoubleArray4d. | 
| APT_Double44 | Represents property 4x4 Double matrix. The corresponding AssetProperty sub class is AssetPropertyDoubleMatrix44. | 
| APT_String | Represents property String. The corresponding AssetProperty sub class is AssetPropertyString. | 
| APT_Time | Represents property Time. The corresponding AssetProperty sub class is AssetPropertyTime. | 
| APT_Distance | Represents property Distance. The corresponding AssetProperty sub class is AssetPropertyDistance. | 
| APT_Asset | Represents property Asset. The corresponding AssetProperty sub class is Asset. | 
| APT_Reference | Represents property Reference. The corresponding AssetProperty sub class is AssetPropertyReference. | 
| APT_Int64 | Represents property Int64. The corresponding AssetProperty sub class is AssetPropertyInt64. | 
| APT_UInt64 | Represents property unsigned Int64. The corresponding AssetProperty sub class is AssetPropertyUInt64. | 
| APT_List | Represents property List. The corresponding AssetProperty sub class is AssetPropertyList. | 
| APT_FloatArray | Represents property Float array. The corresponding AssetProperty sub class is AssetPropertyFloatArray. |