for (int i = 0; i < this.rptList1.Items.Count; i++)
{
int id = Convert.ToInt32(((Label)this.rptList1.Items[i].FindControl("lb_id")).Text);
int order = Convert.ToInt32(((TextBox)rptList1.Items[i].FindControl("txtOrder")).Text);
CheckBox cb = (CheckBox)this.rptList1.Items[i].FindControl("cb_id");
if (cb.Checked)
{
//执行删除或修改排序等操作
}
}