Delete all items from a SharePoint List C# programatically

/// <summary>
/// Delete items and folders from a listFromItemTobeDeleted
/// Define WSSV3 to remove listFromItemTobeDeleted folders
/// </summary>listFromItemTobeDeleted
/// The SPList you want to
/// Delete items from
private static void DeleteAllItemfromTheList(SPList listFromItemTobeDeleted)
{
Console.WriteLine("Purging listFromItemTobeDeleted: " + listFromItemTobeDeleted.Title);
Console.WriteLine("Base Type: " + listFromItemTobeDeleted.BaseType.ToString());

// ===========================================================
// listFromItemTobeDeleted.ItemCount returns a count that includes all items
// "AND" folders.
// You can't use listFromItemTobeDeleted.Items.DeleteItemById() to remove a
// folder
// ===========================================================
System.Collections.Hashtable hashtableItemCollection =
new System.Collections.Hashtable(listFromItemTobeDeleted.ItemCount);

// ===========================================================
// SPList.Items returns all listFromItemTobeDeleted items in the entire listFromItemTobeDeleted
// regardless of folder containment
// Note, just because listFromItemTobeDeleted.ItemCount includes folders,
// listFromItemTobeDeleted.Items does not.
// ===========================================================
foreach (SPListItem listItems in listFromItemTobeDeleted.Items)
hashtableItemCollection.Add(listItems.ID,null);

// Remove the listFromItemTobeDeleted items
foreach (int ID in hashtableItemCollection.Keys)
listFromItemTobeDeleted.Items.DeleteItemById(ID);
// Clear the hashtable
hashtableItemCollection.Clear();
// ===========================================================
// SPList.Folders returns all folder items in the entire listFromItemTobeDeleted
// regardless of parent folder containment
// ===========================================================
foreach (SPListItem listItems in listFromItemTobeDeleted.Folders)
hashtableItemCollection.Add(listItems.ID,null);

// Remove the folder items
foreach (int ID in hashtableItemCollection.Keys)
{
listFromItemTobeDeleted.Folders.DeleteItemById(ID);
}
}