Move SharePoint List Item (SPListItem) To Sub Folder

Below is a sample code to move SPlist item  from Root Location to sub folder. as every list item have unique url they can treated as File(SPFile). With SPFile Object we know how SPFile.Move() works.

In this sample code will try to move SharePoint list item from root folder to subfolder during ItemAdded Event.

/*
* /Move  List Item to folder ( not Document library folder )
* with sahrepoint 2010(not sure if poosible in MOSS 2007 )
* Key point sahrepont create unique URL for every list item also . it will look like 
* http:///sites//Lists//1_.000    where 1 is SPitem ID
* 
*/
          
SPWeb web= properties.Web;
//Folder123 is Inside root location of List
string DestinationFolderName="Folder123";

// Source item outside folder Folder123 
SPListItem listitem = properties.ListItem;

SPFile listitemFile = web.GetFile(listitem.Url);

//Create New Destination  URL ../Lists/Folder123/1_.000
string NewDestinationUrl=listitemFile.Url.Replace(listitem.ID.ToString()+"_.000",DestinationFolderName+"/"+listitem.ID.ToString()+"_.000"); 

//Move Item Insite Folder123
listitemFile.MoveTo(NewDestinationUrl);