SharePoint 设置Lookup 字段的值

如何设置Lookup字段的值， 首先我们同样需要了解SPFieldLookupValueCollection和SPFieldLookupValue， 这2个类的原理和之前所讲解到SPFieldUserValueCollection一样，这里就不多讲解

         /// <summary>

         /// Convert dropdownList value to SPFieldLookupValue

         /// </summary>

         /// <param name="dropdownList">DropDownList Control</param>

         /// <returns>SPFieldLookupValue</returns>

         private SPFieldLookupValue setLookupValue(DropDownList dropdownList)

         {

             SPFieldLookupValue lookupValue = new SPFieldLookupValue(Convert.ToInt32(dropdownList.SelectedItem.Value), dropdownList.SelectedItem.Text);

             return lookupValue;

         }