Assembly: Microsoft.Office.InfoPath (in Microsoft.Office.InfoPath.dll)
If the form template is configured to enable digital signatures for specific data in the form, the value of the SignatureRelation property corresponds to the option selected under Signature options in the Set of Signable Data dialog box when the set of signable data was defined in the form template.
If the form template is configured to enable digital signatures for the entire form, the SignatureRelation property will always return SignatureRelation.CounterSign.
This member can be accessed only by forms running in the same domain as the currently open form, or by forms that have been granted cross-domain permissions.
This type or member can be accessed only from code running in forms opened in Microsoft InfoPath Filler.