使用RadioButtonLists时可以控制标签吗?

时间:2009-12-02 09:20:58

标签: c# asp.net html radiobuttonlist

这个

protected void Page_Load(object sender, EventArgs e) {
    RadioButtonList1.Items.Add(new ListItem("London","1"));
    RadioButtonList1.Items.Add(new ListItem("Paris", "2"));
}

和这个

   <asp:RadioButtonList ID="RadioButtonList1" runat="server" RepeatLayout="Flow">
   </asp:RadioButtonList></div>

生成类似这样的HTML

   <input id="RadioButtonList1_0" type="radio" name="RadioButtonList1" value="1" />
   <label for="RadioButtonList1_0">London</label>
   <input id="RadioButtonList1_1" type="radio" name="RadioButtonList1" value="2" />
   <label for="RadioButtonList1_1">Paris</label>

但我真正想要的是,请注意<label>标记中的课程。

    <input type="radio" name="Event" id="whatever" value="1" /> 
    <label for="London" class="London">London</label> 
    <input type="radio" name="Event" id="whatever" value="2" /> 
    <label for="Paris" class="Paris">Paris</label> 

我可以将cssClass添加到自动生成的<label>代码吗?

2 个答案:

答案 0 :(得分:2)

您可以继承RadioButtonList,如herehere所示。

最后一个链接可能更符合您的要求。

您应该只需要覆盖RenderItem方法,如下所示:

protected override void RenderItem(ListItemType itemType, int repeatIndex, RepeatInfo repeatInfo, HtmlTextWriter writer)
{
    RadioButton radioButton = new RadioButton();
    radioButton.Page = this.Page;
    radioButton.GroupName = this.UniqueID;
    radioButton.ID = this.ClientID + "_" + repeatIndex.ToString();
    radioButton.Text = this.Items[repeatIndex].Text;            
    radioButton.Attributes["value"] = this.Items[repeatIndex].Value;
    radioButton.Checked = this.Items[repeatIndex].Selected;
    radioButton.TextAlign = this.TextAlign;
    radioButton.AutoPostBack = this.AutoPostBack;
    radioButton.TabIndex = this.TabIndex;
    radioButton.Enabled = this.Enabled;

    radioButton.CssClass = InnerCssClass;
    radioButton.Style.Add(HtmlTextWriterStyle.BackgroundColor, this.Items[repeatIndex].Text);

    radioButton.RenderControl(writer);

    // add new label
    Label radioLabel = new Label();
    radioLabel.Text = this.Items[repeatIndex].Text;
    radioLabel.CssClass = this.Items[repeatIndex].Text;
    radioLabel.AssociatedControlID = this.ClientID + "_" + repeatIndex.ToString();
    radioLabel.RenderControl(writer);
}

注意,我实际上并没有编译上面的代码,但应该足以指导你正确的方向:)

答案 1 :(得分:0)

我不是ASP.NET专业人员,但我知道您可以通过使用子选择器轻松控制具有已知ID的元素中LABEL的显示。

#myElementID LABEL {
  padding: 5px;
}