In Management Studio select database >> right click on selected database >> tasks >> back up

I want to command

Write down following code snippet in c# to take backup. One thing remeber that creadential should be changed..

    using System;
    using System.Data;
    using System.Collections;
    using Microsoft.SqlServer.Management.Common;
    using Microsoft.SqlServer.Management.Smo;
    class Program
    {
        static void Main(string[] args)
        {
            BackupDeviceItem bdi =
                new BackupDeviceItem("AdventureWorks.bak", DeviceType.File);
            Backup bu = new Backup(  );
            bu.Database = "AdventureWorks";
            bu.Devices.Add(bdi);
            bu.Initialize = true;
            // add percent complete and complete event handlers
            bu.PercentComplete +=
                new PercentCompleteEventHandler(Backup_PercentComplete);
            bu.Complete +=new ServerMessageEventHandler(Backup_Complete);
            Server server = new Server("localhost");
            bu.SqlBackup(server);
            Console.WriteLine(Environment.NewLine + "Press any key to continue.");
            Console.ReadKey(  );
        }
        protected static void Backup_PercentComplete(
            object sender, PercentCompleteEventArgs e)
        {
            Console.WriteLine(e.Percent + "% processed.");
        }
        protected static void Backup_Complete(object sender, ServerMessageEventArgs e)
        {
            Console.WriteLine(Environment.NewLine + e.ToString(  ));
        }
    }

Thanku  Awadhendra Tiwari Sir  Your Database Backup Code is Very Helpful