利用代码给SPUSER字段赋值

 

using (SPSite site = new SPSite("http://site")) { using (SPWeb web = site.AllWebs["Web"])     {     SPList list = web.Lists["List"];     SPListItem item = list.Items[0];     SPFieldUserValueCollection values = (SPFieldUserValueCollection)item["Users"];     SPUserCollection users = web.AllUsers;     foreach (SPUser user in users)     {         values.Add(new SPFieldUserValue(web, user.ID, user.Name));     }     item["Users"] = values;     item.Update();     } } 

或者直接以字符串形式给其赋值，格式为 UserID;#UserName