Deleting all library items in a document library.

1. private static void DeleteAllItemsUsingBatch()  
2.         {  
3.             using (SPSite site = new SPSite("http://mysharepointserver"))  
4.             {  
5.                 SPWeb web = site.OpenWeb("/");  
6.                 SPList list = web.Lists["Documents"];  
7.                 StringBuilder sb = new StringBuilder();  
8.                 sb.Append("<batch>");  
9.                 string batchCommand = "<method><setlist scope=\"Request\">" + list.ID + "</setlist><setvar name=\"ID\">{0}</setvar><setvar name=\"Cmd\">DELETE</setvar><setvar name=\"owsfileref\">{1}</setvar></method>";  
10.                 foreach (SPListItem item in list.Items)  
11.                 {  
12.                     sb.AppendFormat(batchCommand, item.ID.ToString(), item.File.ServerRelativeUrl);  
13.                 }  
14.                 sb.Append("</batch>");  
15.   
16.                 web.AllowUnsafeUpdates = true;  
17.                 site.RootWeb.ProcessBatchData(sb.ToString());  
18.                 web.AllowUnsafeUpdates = false;  
19.                 web.Close();  
20.             }  
21.         }