如何在提交时创建有问题的新单选按钮列表?c#asp.net
本文关键字:单选按钮 列表 net c#asp 有问题 提交 创建 | 更新日期: 2023-09-27 17:59:23
我有:
<div id="question">
<div style="float: left; width: 250px;">
<asp:Label ID="question" runat="server"></asp:Label></div>
<div>
<asp:RadioButtonList ID="selectdYesNo" runat="server" RepeatDirection="Horizontal">
<asp:ListItem Text="Yes" Value="1"></asp:ListItem>
<asp:ListItem Text="No" Value="0"></asp:ListItem>
</asp:RadioButtonList>
</div>
</div>
<div id="btCreate" style="margin-left: 200px; margin-top: 10px;">
<asp:Button runat="server" Text="Categorize" ID="btCategorize" />
</div>
如何在提交后创建带有新问题的单选按钮列表的新条目??原则上创建新的2、3、4等
这是您的代码
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
PanelFirstQuestionBlock.Visible = true;
}
}
protected void FirstQuestionGotAnswered(object sender, EventArgs e)
{
PanelFirstQuestionBlock.Visible = false;
PanelSecondQuestionBlock.Visible = true;
}
这是您的ASP:HTML
<asp:Panel ID="PanelFirstQuestionBlock" runat="server" Visible="false">
<h1>My first Question</h1>
<asp:RadioButtonList ID="RadioButtonListAnswer1" runat="server"
OnSelectedIndexChanged="FirstQuestionGotAnswered">
<asp:ListItem>yes</asp:ListItem>
<asp:ListItem>no</asp:ListItem>
</asp:RadioButtonList>
</asp:Panel>
<asp:Panel ID="PanelSecondQuestionBlock" runat="server" Visible="false">
<h1>My second Question</h1>
<asp:RadioButtonList ID="RadioButtonListAnswer2" runat="server">
<asp:ListItem>yes</asp:ListItem>
<asp:ListItem>no</asp:ListItem>
</asp:RadioButtonList>
</asp:Panel>
您可以这样尝试selectdYesNo.Items.Add(new ListItem("text","value"));
您应该将第三个条目放在:之间
<%
if (needToShowThirdEntry) {
%>
和
<%
}
%>
所以,你的代码:
<asp:RadioButtonList ID="selectdYesNo" runat="server" RepeatDirection="Horizontal">
<asp:ListItem Text="Yes" Value="1"></asp:ListItem>
<asp:ListItem Text="No" Value="0"></asp:ListItem>
<%
if (needToShowThirdEntry) {
%>
<asp:ListItem Text="Maybe" Value="2"></asp:ListItem>
<%
}
%>
</asp:RadioButtonList>
更新当你更新你的问题时,我的新答案是:
<asp:RadioButtonList ID="selectdYesNo" runat="server" RepeatDirection="Horizontal">
<asp:ListItem Text="Yes" Value="1"></asp:ListItem>
<asp:ListItem Text="No" Value="0"></asp:ListItem>
</asp:RadioButtonList>
<%
if (needToShowSecondList) {
%>
<asp:RadioButtonList ID="newRBList" runat="server" RepeatDirection="Horizontal">
<asp:ListItem Text="Yes" Value="1"></asp:ListItem>
<asp:ListItem Text="No" Value="0"></asp:ListItem>
<asp:ListItem Text="Maybe" Value="2"></asp:ListItem>
</asp:RadioButtonList>
<%
}
%>
但是,由于这是一个单独的列表,您应该制作普通的单选按钮列表(没有if),并使用代码后面的newRBList.Visible
属性在第一次渲染(回发之前)时将其隐藏