Checks that the input element is a project phase. 
Namespace: Autodesk.Revit.DB.Analysis
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)
Since:  2011 
Syntax
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Parameters
- projectPhaseId
- Type: Autodesk.Revit.DBElementId
 The element to be checked.
Return Value
True if the input element is a project phase, false otherwise.Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.ExceptionsArgumentNullException | A non-optional argument was null |