Definition Class |
The Definition object is a base object for all type of parameter definitions within the Autodesk Revit API.

System Object
Autodesk.Revit.DB Definition
Autodesk.Revit.DB ExternalDefinition
Autodesk.Revit.DB InternalDefinition
Autodesk.Revit.DB Definition
Autodesk.Revit.DB ExternalDefinition
Autodesk.Revit.DB InternalDefinition
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)

The Definition type exposes the following members.


Name | Description | |
---|---|---|
![]() | Equals | Determines whether the specified object is equal to the current object. (Inherited from Object ) |
![]() ![]() | GetDataType | Gets a ForgeTypeId identifying the data type describing values of the parameter. |
![]() | GetGroupTypeId | Returns the identifier of the parameter definition's parameter group. |
![]() | GetHashCode | Serves as the default hash function. (Inherited from Object ) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object ) |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object ) |

This object supports properties and methods that report the name and type of a particular parameter. There are two kinds of definition object derived from this: InternalDefinition which represents all kinds of definitions existing entirely within the Autodesk Revit database. ExternalDefinitions represent definitions stored on disk in a shared parameters file. Most of the time code should be written to utilize this Definition base class as then the code will be applicable to both internal and external parameter definitions.
