SPBuiltInFieldId.CustomerID Field
Identifies a field that contains the customer ID number in the contact or calendar information.
Namespace: Microsoft.SharePoint
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Available in Sandboxed Solutions: Yes
Available in SharePoint Online
Syntax
'Declaration
Public Shared ReadOnly CustomerID As Guid
'Usage
Dim value As Guid
value = SPBuiltInFieldId.CustomerID
public static readonly Guid CustomerID