c#中datalist绑定xml,如何根据绑定的值datalist显示其他的值

进入if语句后，可是lable的显示值未改变，还是绑定的xml中的值
protected void all_ItemDataBound(object sender, DataListItemEventArgs e)
    {
        if (e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType == ListItemType.Item)
        {
            Label alb1 = (Label)e.Item.FindControl("alb1");
            Label alb2 = (Label)e.Item.FindControl("alb2");
            Label acolor = (Label)e.Item.FindControl("acolor"); 
            string all1 = alb1.Text.ToString();
            string all2 = alb2.Text.ToString();
            string color = acolor.Text.ToString();
            if (color == "1")
            {
                alb1.ForeColor = System.Drawing.Color.Red;
                alb2.ForeColor = System.Drawing.Color.Red;
            }
            if (all1 == "-1.00")
            {
                alb1.ForeColor = System.Drawing.Color.Red;
                alb1.Text = "断线";
                alb2.Text = "";
            }
            else if ((all1 == "0.00") && (all2 == "无"))
            {
                alb1.ForeColor = System.Drawing.Color.Red;
                alb1.Text = "停";
                alb2.Text = "";
            }
            else if ((all1 == "1.00") && (all2 == "无"))
            {
                alb1.Text = "开";
                alb2.Text = "";
            }
        }