我在页面上选择类型后修改页面ext:label的text值，然后我在后台再取该text，下面红色部分显示出来的值还是原来的值，有知道的告诉下 ，谢谢！

先赋值：

List<Ext.Net.Label> listLab = Ext.Net.Utilities.ControlUtils.FindControls<Ext.Net.Label>(this.Page);
            List<Ext.Net.NumberField> listNum = Ext.Net.Utilities.ControlUtils.FindControls<Ext.Net.NumberField>(this.Page);

            for (var i = 0; i < dt.Rows.Count; i++)
            {
                var labid = "rate" + i.ToString() + "_lab";
                var numid = "money" + i.ToString() + "_lab";
                listLab.Find(p => p.ID == labid).Text = dt.Rows[i][rate].ToString();
                listNum.Find(p => p.ID == numid).TabTip = dt.Rows[i]["b_id"].ToString();
            }

再取值：

 List<Ext.Net.NumberField> listNum = Ext.Net.Utilities.ControlUtils.FindControls<Ext.Net.NumberField>(this.Page);
        List<Ext.Net.Label> listLab = Ext.Net.Utilities.ControlUtils.FindControls<Ext.Net.Label>(this.Page);
        List<string> valList = new List<string>();
        List<string> noList = new List<string>();
        var i = 0;

        foreach (Ext.Net.NumberField field in listNum)
        {
            string v = field.Text.Trim();
            if (!string.IsNullOrEmpty(v))
            {
                if (isCheckMinValue(v))
                    valList.Add(listLab[i].TabTip + "," + listLab[i].Text.Trim() + "," + v + "," + field.TabTip);
                else
                    noList.Add(listLab[i].TabTip + "," + listLab[i].Text.Trim() + "," + v + field.TabTip);
            }
            i++;
        }