Revit 2025.3 API
Curve |
Returns the state of a tangent join between this and another curve element at the given end-point.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0)
Syntax
public bool GetTangentLock( int end, ElementId other )
Public Function GetTangentLock ( end As Integer, other As ElementId ) As Boolean
public: bool GetTangentLock( int end, ElementId^ other )
member GetTangentLock : end : int * other : ElementId -> bool
Parameters
- end Int32
- Index of one of the curve's end. Values '0' and '1' indicate the start or end point, respectively.
- other ElementId
- ElementId of another Curve Element from the same document.
Return Value
BooleanReturns True if this curve element has a tangent joint with the other input element and the join is curently locked; returns False otherwise.

Exception | Condition |
---|---|
ArgumentException | The given Id does not represent any of the two end-points of a curve element. A valid value of either '0' or '1' is expected. -or- The given ElementId (%elementId) is not of a valid Curve Element. A valid Curve Element must be in the same document and must be diferent than this curve elements self. -or- This element has no tangent join with the input element at the given end-point. |
ArgumentNullException | A non-optional argument was null |

The return value indicates whether there is such tangent join and if it is currently locked.
A negative value indicates that there either is no tangent join with the other element
at the given end-point, or the join between those two curve element is not currently locked.
See Also