Panel控件遍历问题

Question

我在前台有

        <asp:Panel ID="CommodityType" runat="server" CssClass="comtype" >
        </asp:Panel>

后台动态添加控件

        DataSet xmlcomtype = new DataSet();
        xmlcomtype.ReadXml(Server.MapPath(@"~/XML/CommodityType.xml"));
        foreach(DataRow drtype in xmlcomtype.Tables[0].Rows)
        {
            CheckBox cb = new CheckBox();
            cb.Text = drtype["Type"].ToString();
            CommodityType.Controls.Add(cb);
        }

后台遍历控件

        foreach (Control c in CommodityType.Controls)
        {
            if (c.GetType().ToString().Equals("System.Web.UI.WebControls.CheckBox"))
            {
                CheckBox cb = (CheckBox)c;
                if (cb.Checked)
                    ct.CommodityType += "," + cb.Text;
            }
        }
        if (!string.IsNullOrEmpty(ct.CommodityType))
            ct.CommodityType = ct.CommodityType.Substring(1);

怎么我遍历不出控件的,输出控件数量

 ClientScript.RegisterStartupScript(GetType(), "message", "<script>alert('" + CommodityType .Controls.Count.ToString()+ "');</script>");

输出值为1

但是我后台添加了好几个控件了

求帮忙

Answer 1

晕，给你一个Winform的例子。我项目中实际用的，你照着比就可以了。 /// <summary> /// 清除容器里面某些控件的值 /// </summary> /// <param name="parContainer">容器控件</param> public static void ClearCntrValue(Control parContainer) { for (int index = 0; index < parContainer.Controls.Count; index++) { //如果是容器类控件，递归调用自己 if (parContainer.Controls[index].HasChildren) { ClearCntrValue(parContainer.Controls[index]); } else { switch (parContainer.Controls[index].GetType().Name) { case "Label": break; case "ComboBox": ((ComboBox)(parContainer.Controls[index])).Text = ""; break; case "TextBox": ((TextBox)(parContainer.Controls[index])).Text = ""; break; case "RichTextBox": ((RichTextBox)(parContainer.Controls[index])).Text = ""; break; case "MaskedTextBox": ((MaskedTextBox)(parContainer.Controls[index])).Text = ""; break; case "RadioButton": ((RadioButton)(parContainer.Controls[index])).Checked = false; break; case "CheckBox": ((CheckBox)(parContainer.Controls[index])).Checked = false; break; } } } }