Programmatically delete all sub sites in a site collection(Sharepoint)

I have found one of the very useful code below to delete all sub sites in a site collection.


using System;  
using System.Collections.Generic;  
using System.Linq;  
using System.Text;  
using Microsoft.SharePoint;  
using Microsoft.SharePoint.Security;  
 
 
namespace SiteDeletion  
{  
    class Program  
    {  
        static void Main(string[] args)  
        {  
            Console.WriteLine("Executing program");  
 
            //Target site to delete sub sites from  
            string siteURL = "http://YourSiteURL/";  
 
            SPSecurity.RunWithElevatedPrivileges(delegate()  
            {  
                Console.WriteLine("Opening site");  
                using (SPSite oSite = new SPSite(siteURL))  
                {  
                    Console.WriteLine("Opening web");  
                    using (SPWeb osubWeb = oSite.OpenWeb())  
                    {  
                        Console.WriteLine("Getting sub sites");  
                        SPWebCollection subSites = osubWeb.GetSubwebsForCurrentUser();  
                        Console.WriteLine("looping");  
                        foreach (SPWeb subWeb in subSites)  
                        {  
                            //If you need to keep sites of a particular name  
                            if (subWeb.Title.Contains("Template"))  
                            {  
                                Console.WriteLine("NOT deleteing site: " + subWeb.Title);  
                            }  
                            else 
                            {  
                                Console.WriteLine("DELETING: " + subWeb.Title);  
                                DeleteWeb(subWeb);  
                            }  
                        }  
                    }  
 
 
 
                }  
            });  
 
            //Console.ReadLine();  
        }  
 
        public static void DeleteWeb(SPWeb web)  
        {  
            SPWebCollection subwebSites = web.GetSubwebsForCurrentUser();  
 
            if (subwebSites.Count > 0)  
            {  
                foreach (SPWeb w in subwebSites)  
                {  
                    DeleteWeb(w);  
                }  
            }  
 
            web.Delete();  
            return;  
        }  
 
    }  
}

Reference

http://simplisticsharepoint.blogspot.sg/2013/03/programmatically-delete-all-sites-in.html