Parameter.ClearValue Method

Clears the parameter to its initial value.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.2.0.0 (26.2.0.0)

Syntax

public bool ClearValue()

Boolean
The ClearValue method will return True if the parameter was successfully cleared to its initial value, otherwise false.

Exception	Condition
InvalidOperationException	The parameter is read-only, or the parameter is not a shared parameter, or the shared parameter has HideWhenNoValue set to false.

This method will only succeed for Shared parameters that have their HideWhenNoValue property set to true.