protected void gvWhitelists_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
Whitelist whitelist = new Whitelist();
whitelist.delete(Convert.ToInt32(e.Keys[0].ToString()));
gvWhitelists.EditIndex = -1;
gvWhitelists.DataSource = whitelist.load();
gvWhitelists.DataBind();
btnInsert.Visible = true;
}