SPListItem.CopyFieldMask, propriété (Microsoft.SharePoint)
Assembly : Microsoft.SharePoint (dans microsoft.sharepoint.dll)
The SPCopyFieldMask object is used during copy operations. If a field is included in the SPCopyFieldMask object of the destination item, the value of the source item for that field is not written into the destination item. If a field is included in the SPCopyFieldMask object, it is protected from being overwritten by copy operations.