点击button1生成选项后,点击其中的项目1,项目2,项目3,项目4 RadioButton消失 也没有触发CheckedChanged事件,请大家帮我看看是什么原因. protected void R_CheckedChanged(object sender, EventArgs e)
{
RadioButtonList rbl = sender as RadioButtonList;
Label2.Text = "你选择的是" + rbl.SelectedItem.Value; } protected void Button1_Click(object sender, EventArgs e)
{
RadioButtonList R = new RadioButtonList();
R.AutoPostBack = true;
R.Items.Add(new ListItem("选项1", "1"));
R.Items.Add(new ListItem("选项2", "2"));
R.Items.Add(new ListItem("选项3", "3"));
R.Items.Add(new ListItem("选项4", "4"));
R.ID = "rStockCode";
R.RepeatDirection = RepeatDirection.Horizontal;
R.RepeatLayout = RepeatLayout.Flow; R.SelectedIndexChanged+=new EventHandler(R_CheckedChanged);
this.Label1.Controls.Add(R); //lStockCode.Visible = true;
Button1.Visible = true;
}
}
{
RadioButtonList rbl = sender as RadioButtonList;
Label2.Text = "你选择的是" + rbl.SelectedItem.Value; } protected void Button1_Click(object sender, EventArgs e)
{
RadioButtonList R = new RadioButtonList();
R.AutoPostBack = true;
R.Items.Add(new ListItem("选项1", "1"));
R.Items.Add(new ListItem("选项2", "2"));
R.Items.Add(new ListItem("选项3", "3"));
R.Items.Add(new ListItem("选项4", "4"));
R.ID = "rStockCode";
R.RepeatDirection = RepeatDirection.Horizontal;
R.RepeatLayout = RepeatLayout.Flow; R.SelectedIndexChanged+=new EventHandler(R_CheckedChanged);
this.Label1.Controls.Add(R); //lStockCode.Visible = true;
Button1.Visible = true;
}
}
能否以代码示例,谢谢
在页面中:
<div id="infodiv" runat="server" style="display:none">
<asp:radiobuttonlist ID="R" runat="server" OnSelectedIndexChanged="R_SelectedIndexChanged"></asp:radiobuttonlist></div>
在后台代码:
protected void Button1_Click(object sender, EventArgs e)
{
R.AutoPostBack = true;
R.Items.Add(new ListItem("选项1", "1"));
R.Items.Add(new ListItem("选项2", "2"));
R.Items.Add(new ListItem("选项3", "3"));
R.Items.Add(new ListItem("选项4", "4"));
R.RepeatDirection = RepeatDirection.Horizontal;
R.RepeatLayout = RepeatLayout.Flow; this.infodiv.Style.Add(HtmlTextWriterStyle.Display, "block");// 使用时让层显示
R.Items[0].Selected = true;//指定默认选项
//lStockCode.Visible = true;
Button1.Visible = true;
}
protected void R_SelectedIndexChanged(object sender, EventArgs e)
{
Label2.Text = "你选择的是" + R.SelectedItem.Value; }
如果你是要通过 点击按钮的形式添加 哪实现不了 原因jackyoung02 已经说了如果非要实现这样的效果 哪就用 ajax实现吧
ajax 挺容易实现的