Checks whether a local file is a CBFS Vault vault.
This method checks whether the file specified by the VaultFile property is a CBFS Vault vault that can be opened by the class. The file being checked must be fully closed when this method is called.
If the specified file is a CBFS Vault vault, this method returns true; otherwise it returns false.
Note that this method uses a simple detection mechanism; it doesn't perform a full consistency check or attempt any repairs, so applications may still need to call CheckAndRepair even if this method returns true. If an error occurs during the detection process, this method fails with an error.
Note: This method cannot be called when Active is true, and cannot be called within events.
This method returns a Boolean value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.