For shape driven rebar returns all possible RebarConstraints that will constrain RebarConstrainedHandle to the provided reference.

For free form rebar will return an empty lists.

Namespace: Autodesk.Revit.DB.Structure
Assembly: RevitAPI (in RevitAPI.dll) Version: 22.0.0.0 (22.1.0.0)
Since: 2020.1

Syntax

C#
`public IList<RebarConstraint> GetConstraintCandidatesForHandle( RebarConstrainedHandle handle, Reference reference )`

Visual Basic
`Public Function GetConstraintCandidatesForHandle ( _ handle As RebarConstrainedHandle, _ reference As Reference _ ) As IList(Of RebarConstraint)`

Visual C++
`public: IList<RebarConstraint^>^ GetConstraintCandidatesForHandle( RebarConstrainedHandle^ handle, Reference^ reference )`

handle: Type: Autodesk.Revit.DB.Structure RebarConstrainedHandle
The RebarConstrainedHandle for which constraint candidates are sought.

reference: Type: Autodesk.Revit.DB Reference
The reference you want to constrain to.

A collection of RebarConstraints

Remarks

Will throw exception if the provided reference cannot be used to constrain the provided rebar handle.

Exception	Condition
Autodesk.Revit.Exceptions ArgumentException	reference is not from a valid RebarConstraint target element.
Autodesk.Revit.Exceptions ArgumentNullException	A non-optional argument was null
Autodesk.Revit.Exceptions InvalidOperationException	The RebarConstraintsManager does not manage a valid Rebar element.