External   |  
 Checks whether the reference is in a valid format. 
 Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
Parameters
- resourceType ExternalResourceType
 - The type of resource which the ExternalResourceReference should correspond to.
 
Return Value
BooleanTrue if this is a valid ExternalResourceReference. False otherwise.
| Exception | Condition | 
|---|---|
| ArgumentNullException | A non-optional argument was null | 
 This function checks: 
 - The server id corresponds to a valid server which implements IExternalResourceServer.
 - The server supports the given ExternalResourceType.
 - The reference information is well-formed.