Returns result that the proposed name is valid and not exist in the specified document. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 22.0.0.0 (22.1.0.0) 
  Since:  2022 
Syntax
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Parameters
- document
-  Type:  Autodesk.Revit.DB Document  
 Document to check
- name
-  Type:  System String  
 Name to check.
Return Value
Whether or not the name is valid.Remarks
 Name can't contains following characters, such as { } [ ] | ; < > ? ` ~ \ : \r \n \f \t \v. Name can't be blank. If true, the name is valid and not exist in specified document. If false, the name is not a valid name which means it does not exist in specified document. 
 Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was null |