Removes a subelement from the element. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 18.0.0.0 (18.2.0.0) 
  Since:  2018 
Syntax
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Parameters
- subelem
-  Type:  Autodesk.Revit.DB Subelement  
 The subelement to delete.
Return Value
True if entire element was deleted, false otherwise.Remarks
 Depending on implementation for given element as the result, the element can be deleted - especially if after subelement deletion there are no subelements left. 
 Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentException | The subelement subelem does not exist in the element. -or- Subelement subelem cannot be deleted. | 
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was NULL | 
| Autodesk.Revit.Exceptions ModificationForbiddenException | This Element is an internal element, such as a component of a loaded family or a group type. -or- The document containing this Element is in Group Edit Mode, Sketch Edit Mode, or Paste Mode, and the element is not a member of the group, sketch, or clipboard. -or- This Element is a member of a group or sketch, and the document is not currently editing the group or sketch. |