|  Document  | 
 DocumentDifference represents the difference (including added elements, modified elements and deleted elements) of a Revit model between different DocumentVersion of the model. 
  Inheritance Hierarchy
 Inheritance Hierarchy  Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
 Syntax
 Syntax  The DocumentDifference type exposes the following members.
 Properties
 Properties  | Name | Description | |
|---|---|---|
|   | AreDeletedElementIdsAvailable | Whether or the deleted elements were retrieved. | 
|   | IsValidObject | Specifies whether the .NET object represents a valid Revit entity. | 
 Methods
 Methods  | Name | Description | |
|---|---|---|
|   | Dispose | Releases all resources used by the DocumentDifference | 
|   | Equals | Determines whether the specified object is equal to the current object. (Inherited from Object ) | 
|   | GetCreatedElementIds | Created element id collection. | 
|   | GetDeletedElementIds | Deleted element id collection. For non-worksharing models, this will always be an empty collection. | 
|   | GetHashCode | Serves as the default hash function. (Inherited from Object ) | 
|   | GetModifiedElementIds | Modified element id collection. | 
|   | GetType | Gets the  Type  of the current instance. (Inherited from Object ) | 
|   | ToString | Returns a string that represents the current object. (Inherited from Object ) | 
 Remarks
 Remarks   For workshared models, DocumentDifference may contain all the added elements, modified elements and deleted elements. For non-workshared models, deleted elements are not tracked, so this object may only contain added elements and modified elements. 
  See Also
 See Also