深入淺出SharePoint—對不同類型的欄位進行賦值

SPFieldLookupValue對象即為查閱項的值，它有兩個屬性，分別是LookupId和LookupValue，LookupId為此查閱項的值在資料來源List中的ItemID，LookupValue為此查閱項的值在資料來源List中所對應的值，一般構造語句為SPFieldLookupValue myValue = new SPFieldLookupValue(LookupId, LookupValue)，其預設Display出來的值得格式為“LookupId,#;LookupValue”

using System;using Microsoft.SharePoint; namespace ConsoleApp{    class Program    {        static void Main(string[] args)        {            using (SPSite site = new SPSite("http://localhost"))            {                using (SPWeb web = site.RootWeb)                {                    SPList customerList = web.Lists.TryGetList("Contoso Customers");                    SPList orderList = web.Lists.TryGetList("Contoso Orders");                     if (customerList != null && orderList != null)                    {                        SPListItemCollection customers = customerList.Items;                        SPListItemCollection orders = orderList.Items;                         string fieldName = "CustIDLookup";                        if (!orderList.Fields.ContainsField(fieldName))                            return;                                                SPField lookupFld = orderList.Fields.GetField(fieldName);                         foreach (SPListItem customer in customers)                        {                            SPListItem order = orders.Add();                            order[SPBuiltInFieldId.Title] = "Thank you!";                            order.Update();                             SPFieldLookupValue value = new SPFieldLookupValue(customer.ID, customer.ID.ToString());                            order[lookupFld.Id] = value.ToString();                            order.Update();                        }                    }                }            }        }    }}