SPBuiltInFieldId._Identifier field
Identifies a field that contains the identifying string or number of this resource. The format of this field may conform to that of a formal identification system.
Namespace: Microsoft.SharePoint
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Syntax
'Declaration
Public Shared ReadOnly _Identifier As Guid
'Usage
Dim value As Guid
value = SPBuiltInFieldId._Identifier
public static readonly Guid _Identifier