How Do I Delete A Row Using Entity Frame Work

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        int customerID = Convert.ToInt32(((TextBox)GridView1.Rows[e.RowIndex].Cells[1].Controls[0]).Text.Trim());
        ShivaEntities context = new ShivaEntities();
        //var delRecord = context.CustomerDBs.First(x => x.id == customerID);
        CustomerDB objdata = context.CustomerDBs.First(x => x.id == customerID);
        context.CustomerDBs.DeleteObjet(objdata);
        context.SaveChanges();
        BindData();
    }