protected void btn_save_Click(object sender, EventArgs e)
 {
     using (AlmacenEntities modelo = new AlmacenEntities())
     {
         string cod = nit.Value;
         string nam = name.Value;
         string add = address.Value;
         string ph  = phone.Value;
         modelo.PR_ClienteInsert_Web(cod, nam, add, ph);
     }
     Response.Redirect("WebCliente.aspx");
 }