关于后台传值，使前台单选框选中的问题

Question

各位高手，小弟现遇到一个问题前台单选框
<input name="YCBbox<%#Eval("ID") %>" type="radio" value="Y" />正确</td><td width="5%">
<input name="YCBbox<%#Eval("ID") %>" type="radio" value="N" />错误</td>如何使其通过后台数据库读取的数据，使单选框选中啊比如后台读取的是“true”
则前台单选框value=“Y”的选中，
数据库读取的“false”
则前台单选框value=“N”的选中我知道有ASP的可以
<input name="YCBbox<%#Eval("ID") %>" type="radio" value="Y" <%if rs("hot") ="true" then Response.write("checked")%> />
<input name="YCBbox<%#Eval("ID") %>" type="radio" value="N" <%if rs("hot") ="false" then Response.write("checked")%> />请问换成.NET的 怎么写啊

Answer 1

我放ID也没用 后台获取不到的 我没放 runat="server"

Answer 2

笨办法后台定义变量true并赋值前台接收
<% if(true){%>
<input name="YCBbox<%#Eval("ID") %>" type="radio" value="Y" checked="checked" />正确</td><td width="5%">
<%}else
{%>
<input name="YCBbox<%#Eval("ID") %>" type="radio" value="Y" />正确</td><td width="5%">
<%}%>

Answer 3

我是写在
<asp:Repeater ID="rptSubjectOfJudgeList" runat="server" >
                    <HeaderTemplate>
                    <table cellpadding="0" cellspacing="0" class="tableList" width="960">
                    </HeaderTemplate>
                <ItemTemplate>
                     <tr >
                        <td >
                            <asp:HiddenField ID="hidJudgeID" runat="server"  Value='<%#Eval("ID") %>'/>
                         (<%#Eval("Index")%>) <%#Eval("Question")%>
                         <td width="5%">
                         <input name="YCBbox<%#Eval("ID") %>" type="radio" value="Y" checked="<%=Headself%>" />正确</td><td width="5%">
                         <input name="YCBbox<%#Eval("ID") %>" type="radio" value="N" checked="<%=Headself%>" />错误</td>                         </td>
                    </tr>     
                </ItemTemplate>
                <FooterTemplate></table></FooterTemplate>
               </asp:Repeater>
前台写了个"<%=Headself%>"  可是没办法判断 一打开网页都是错误的单选被选中 库里明明是true
我知道我后台也写的乱 自己都绕迷糊了

Answer 4

<%#Eval("ID").ToString() == "true" ? "checked" : "" %>

Answer 5

<input name="YCBbox" type="radio" value="Y"<%#Convert.ToBoolean(Eval("hot"))?" checked":""%> />正确</td><td width="5%">
<input name="YCBbox" type="radio" value="N"<%#Convert.ToBoolean(Eval("hot"))==false?" checked":""%>/>错误</td>

Answer 6

我后台是
int testID = Helper.GetUrlParmValue("testID");//考卷ID
int paperID = Helper.GetUrlParmValue("paperID");
int paperType = Helper.GetUrlParmValue("paperType");//考题类型
int recorderID = Helper.GetUrlParmValue("recorderID");//考生ID
if ((PaperType)paperType == PaperType.BySelection)//手工选题
{
    PaperByManualSelection paper = new BLLPaperByManuaSelection().GetPaper(testID, paperID, recorderID);//得到判断、单选、多选的分数和答案
    if (paper != null)
    {
        rptSubjectOfJudgeList.DataSource = paper.JudgeList;  //判断题的Repeater
        rptSubjectOfJudgeList.DataBind();
        lblJudgeListCount.Text = paper.JudgeList.Count.ToString();//共几道题
       if (paper.JudgeList.Count > 0)
       {
           lblJudgeScores.Text = paper.JudgeList[0].Scores.ToString();//每题分数
           lblJudgeTotalScores.Text = (paper.JudgeList[0].Scores * paper.JudgeList.Count).ToString();//判断题总分
       //try
       //{
       //    foreach (SubjectOfJudge subject in paper.JudgeList)
       //    {
       //        AnswerByTester = subject.AnswerByTester;//数据库读取的答案
       //    }
       //}
       //catch 
       //{ }       }       rptSubjectOfSingleSelectionList.DataSource = paper.SingleSelectionList;//单选题
       rptSubjectOfSingleSelectionList.DataBind();
       lblSingleSelectionCount.Text = paper.SingleSelectionList.Count.ToString();
       if (paper.SingleSelectionList.Count > 0)
       {
            lblSingleSelectionScores.Text = paper.SingleSelectionList[0].Scores.ToString();
            lblSingleSelectionTotalScores.Text = (paper.SingleSelectionList[0].Scores * paper.SingleSelectionList.Count).ToString();
       }
       rptSubjectOfMultiSelectionList.DataSource = paper.MultiSelectionList;//多选题
       rptSubjectOfMultiSelectionList.DataBind();
       lblMultiSelectionCount.Text = paper.MultiSelectionList.Count.ToString();
       if (paper.MultiSelectionList.Count > 0)
       {
           lblMultiSelectionScores.Text = paper.MultiSelectionList[0].Scores.ToString();
           lblMultiSelectionTotalScores.Text = (paper.MultiSelectionList[0].Scores * paper.MultiSelectionList.Count).ToString();
       }
       lblTotalScores.Text = (Convert.ToInt32(lblJudgeTotalScores.Text)//试卷总分
       + Convert.ToInt32(lblSingleSelectionTotalScores.Text)
       + Convert.ToInt32(lblMultiSelectionTotalScores.Text)).ToString();
       }
                //创建考试对应的答案记录
                //new BLLTestRecorder().CreateTestRecorderAnswer(Helper.GetUrlParmValue("recorderID"));
               // new BLLTestRecorder().CreateTestRecorderAnswer(Helper.GetUrlParmValue("recorderID"), paper.JudgeList, paper.SingleSelectionList, paper.MultiSelectionList);
            }可是前台没有能选中的
<input name="YCBbox<%#Eval("ID") %>" type="radio" value="Y" "<%#Convert.ToBoolean(Eval("AnswerByTester"))==true?" checked":""%>" />正确</td><td width="5%">
                         <input name="YCBbox<%#Eval("ID") %>" type="radio" value="N" "<%#Convert.ToBoolean(Eval("AnswerByTester"))==false?" checked":""%>" />错误</td>

Answer 7

不是runat="server"的话只能在后台输出javascript命令来控制页面吧

Answer 8

本帖最后由 net_lover 于 2012-04-01 15:11:01 编辑

  

Answer 9

<%#Eval("AnswerByTester")%> 的值是True 大写T
而前台比较的true全小写，我吧true也改成大写T后 提示编译错误：当前上下文中不存在名称“True”

Answer 10

改成
<input name="YCBbox<%#Eval("ID") %>" type="radio" value="Y" "<%#Eval("AnswerByTester")=="True"?" checked":""%>" />正确</td><td width="5%">后 打开页面 依然是什么都没选中

Answer 11

你后台返回的值如果不是boolean型的数据就要加引号判断

Answer 12

<%#Eval("AnswerByTester")%> 的值是True 大写T
那你就<%#Eval("AnswerByTester").ToString()=="True"?" checked":""%>

Answer 13

试试这样
<input name="YCBbox<%#Eval("ID") %>" type="radio" value="Y" checked="<%#Eval("AnswerByTester")=="True"?true:false%>" />正确</td><td width="5%">

Answer 14

现在选项出来了 可是全是选的错 555555555555555  库里是true

Answer 15

<%#Eval("AnswerByTester").ToString().ToLower()=="true"?" checked":""%>

Answer 16

都是选的最后一个radio 判断题都选的错
单选题都选的D
多选还没弄

Answer 17

哎呀哎呀 怎么办啊 急死我了 555555555555555555
库里读出的数据明明是true 前台显示的也是true 可是radio就是一直选中最后一个radio选项“错误”
单选也是，库里是A 前台读取也是A ，但radio就一直选D 都是选最后一个radio

Answer 18

selected = "<%# Eval("selected").toString() == "true"?"selected":""%>"直接这样可以的