SPFieldUser Class
Represents a user field.
Namespace:
Microsoft.SharePoint
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Available in Sandboxed Solutions: Yes
Available in SharePoint Online
If you set properties of the SPFieldUser class you must call the Update method for changes to take effect in the database.
The field value for the SPFieldUser class is contained in the SPFieldUserValue class. For information about creating custom field value classes, see How to: Create a Custom Field Value Class.
An SPFieldUser object can be rendered through the UserField server control.
The SPFieldUser class corresponds to the User data type that is specified through the Type attribute of the Field element.
Notes to Inheritors
In SharePoint Foundation, columns based on custom field types are read-only in Datasheet view.