private void CargarGrilla()
        {
            DataSet ds = ListCliente.GetClientes();

            gridClientes.DataSource = ds.Tables[0];
            gridClientes.DataBind();
        }
 protected void gridClientes_RowCommand(object sender, GridViewCommandEventArgs e)
 {
     try
     {
         if (e.CommandName == "EditarCliente")
         {
             string sClienteId = e.CommandArgument.ToString();
             Response.Redirect("EditCliente.aspx?Id=" + sClienteId);
         }
         else if (e.CommandName == "EliminarCliente")
         {
             Cliente cliente = new Cliente();
             cliente.Id = Convert.ToInt32(e.CommandArgument.ToString());
             ListCliente.DeleteCliente(cliente);
             CargarGrilla();
         }
     }
     catch (Exception ex)
     {
         messageBox.ShowMessage(ex.Message + ex.StackTrace);
     }
 }