The length, in case of balusters, it is a distance from a previous one. For a post, it is a space from the original position of the post.

Namespace: Autodesk.Revit.DB.Architecture
Assembly: RevitAPI (in RevitAPI.dll) Version: 19.0.0.0 (19.0.0.405)
Since: 2019

Syntax

C#
`public double DistanceFromPreviousOrSpace { get; set; }`

Visual Basic
`Public Property DistanceFromPreviousOrSpace As Double Get Set`

Visual C++
`public: property double DistanceFromPreviousOrSpace { double get (); void set (double value); }`

Exceptions

Exception	Condition
Autodesk.Revit.Exceptions ArgumentException	When setting this property: The given value for distanceFromPreviousOrSpace is not finite
Autodesk.Revit.Exceptions ArgumentOutOfRangeException	When setting this property: The given value for distanceFromPreviousOrSpace must be greater than 0 and no more than 30000 feet.