Database backup from server to local machine using C# in ASP.Net

Dear sir,

How can pass c drive with ip address using asp c#

I unable to take backup from another to my pc with different IP.

Please suggest me.

namespace backupk
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

            //SqlConnection sqlconn = new SqlConnection(@"Data Source=(localdb)\Projects;Initial Catalog=Cascading_ddl;Integrated Security=True;Connect Timeout=30;Encrypt=False;TrustServerCertificate=False");
            SqlConnection sqlconn = new SqlConnection(@"Data Source=10.1.246.4;Initial Catalog=DB_NTPC_MEJA_INTRANET; User ID=dba_ntpc_meja_intranet; Password=alpha$890; Connection Timeout=15;Connection Lifetime=0;Min Pool Size=0;Max Pool Size=100;Pooling=true");
            SqlCommand sqlcmd = new SqlCommand();
            SqlDataAdapter da = new SqlDataAdapter();
            DataTable dt = new DataTable();

            // Backup destibation
            //string backupDestination = @"C:\\SQLBackUpFolder";
            //string backupDestination = @"C: \\10.1.246.4\INTERNET_DRIVE";
            string backupDestination = @"E:\\10.1.246.4\Program Files\Microsoft SQL Server\MSSQL14.SQLMTPP\MSSQL\Backup";


            // check if backup folder exist, otherwise create it.
            if (!System.IO.Directory.Exists(backupDestination))
            {
                System.IO.Directory.CreateDirectory(@"C:\\10.1.246.4\\PMSSQL");
            }
            try
            {
                sqlconn.Open();
                sqlcmd = new SqlCommand("backup database DB_NTPC_MEJA_INTRANET to disk='" + backupDestination + "\\" + DateTime.Now.ToString("ddMMyyyy_HHmmss") + ".Bak'", sqlconn);
                sqlcmd.ExecuteNonQuery();
                //Close connection
                sqlconn.Close();
                Response.Write("Backup database successfully");
            }
            catch (Exception ex)
            {
                Response.Write(ex.Message);
            }
        }
    }
}