Revit 2026 API
DocumentIs |
Identifies if the document is modifiable.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.0.4.0 (26.0.4.0)
Syntax
public bool IsModifiable { get; }
Public ReadOnly Property IsModifiable As Boolean Get
public: property bool IsModifiable { bool get (); }
member IsModifiable : bool with get
Property Value
Boolean
This is not a permanent state such as, for example IsReadOnlyFile.
Value of this property changes dynamically multiple times within the life-time of an open document.
Regardless of the mode a document is opened with, the model can only be modified inside an open transaction.
Furthermore, even with a transaction open, the model is not always modifiable.
Though this is rather a rare situation, it can happen, most likely during model regeneration, failure processing, or some events.
An attempt to modify a non-modifiable document will result in throwing a ModificationOutsideTransactionException.
See also IsReadOnly
See Also