我使用4个radiobuttons作为问题的选项。按钮点击后刷新问题和radiobuttons。将检查的radiobutton文本与答案进行比较，如果匹配，则增加计数器。我发现当我第一次检查一个单选按钮时，下一个问题上的相应单选按钮将被检查，如果是答案，它将增加计数器，如果我改变它以检查另一个单选按钮，这是实际答案，计数器是没有增加。我是否必须为我用来刷新问题的updatepanel指定任何属性。你花时间阅读这篇漫长的文章。
这是我的aspx代码
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
<style>
.con{
width:70%;
margin:auto;
}
.testres{
display:none;
}
.btnHome{
display:none;
color:rgb(0,159,37);
text-decoration:none;
background:none;
border:1px solid grey;
}
</style>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<div class="con">
<div class="subject-name">
<asp:Label runat="server" Text="Subject : " /><asp:Label ID="lblSubjectName" runat="server" Text="" />
</div>
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true"></asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<div class="question-options">
<fieldset>
<legend><asp:Label ID="lblQ" runat="server" Text="Q.No. "/><asp:Label ID="lblQuesNo" runat="server" Text="" /></legend>
<asp:Panel ID="question" runat="server">
<asp:Label ID="lblQues" runat="server" Text="" />
<ul style="list-style-type:none">
<li><asp:RadioButton ID="RadioButton1" runat="server" AutoPostBack="false" GroupName="answer" Text="" /></li>
<li><asp:RadioButton ID="RadioButton2" runat="server" AutoPostBack="false" GroupName="answer" Text="" /></li>
<li><asp:RadioButton ID="RadioButton3" runat="server" AutoPostBack="false" GroupName="answer" Text="" /></li>
<li><asp:RadioButton ID="RadioButton4" runat="server" AutoPostBack="false" GroupName="answer" Text="" /></li>
</ul>
</asp:Panel>
<asp:Panel ID="Panel1" CssClass="testres" runat="server">
<asp:Label ID="Label1" runat="server" Text="Correct Answers : "></asp:Label>
<asp:Label ID="Label2" runat="server" Text=""></asp:Label>
</asp:Panel>
<asp:Button ID="btnNext" runat="server" Text="Next" OnClick="btnNext_Click"/>
<asp:Button ID="btnHome" runat="server" Text="Home" CssClass="btnHome" OnClick="btnHome_Click"/>
</fieldset>
</div>
</ContentTemplate>
</asp:UpdatePanel>
</div>
</asp:Content>
这是背后的代码
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Globalization;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class OnlineTest_Question : System.Web.UI.MasterPage
{
SqlConnection con = new SqlConnection("Password=password@123;Persist Security Info=True;User ID=sa;Initial Catalog=MyDatabasae;Data Source=.");
SqlCommand cmd=new SqlCommand();
SqlDataReader rdr;
DataTable dt = new DataTable();
DataTable dt1 = new DataTable();
DataTable dt3 = new DataTable();
static int rowcount=0;
static int totalrowcount;
string id = "";
string subname = "";
string correctans = "";
int i = 1;
static int correctcount = 0;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
cmd.CommandText = "select subject from subjectstb where subid='" + Request.QueryString["sid"] + "'";
cmd.Connection = con;
con.Open();
rdr = cmd.ExecuteReader();
while (rdr.Read())
{
subname = rdr["subject"].ToString();
}
rdr.Close();
con.Close();
lblSubjectName.Text = subname;
try
{
cmd.CommandText = "select * from questionstb where subject='" + Request.QueryString["sid"] + "'";
con.Open();
cmd.Connection = con;
rdr = cmd.ExecuteReader();
dt.Load(rdr);
rdr.Close();
totalrowcount = dt.Rows.Count;
lblQues.Text = dt.Rows[0]["question"].ToString();
id = dt.Rows[0]["qid"].ToString();
cmd.CommandText = "select * from optionstb where qid='" + id + "'";
rdr = cmd.ExecuteReader();
dt1.Load(rdr);
RadioButton1.Text = dt1.Rows[0]["choice"].ToString();
RadioButton2.Text = dt1.Rows[1]["choice"].ToString();
RadioButton3.Text = dt1.Rows[2]["choice"].ToString();
RadioButton4.Text = dt1.Rows[3]["choice"].ToString();
lblQuesNo.Text = (rowcount + 1).ToString();
correctans = dt1.Rows[0]["correct"].ToString();
if (RadioButton1.Checked == true && RadioButton1.Text == correctans)
{
correctcount = correctcount + 1;
}
else if (RadioButton2.Checked == true && RadioButton2.Text == correctans)
{
correctcount = correctcount + 1;
}
else if (RadioButton3.Checked == true && RadioButton3.Text == correctans)
{
correctcount = correctcount + 1;
}
else if (RadioButton4.Checked == true && RadioButton4.Text == correctans)
{
correctcount = correctcount + 1;
}
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}
}
protected void btnNext_Click(object sender, EventArgs e)
{
if(rowcount<5)
{
if(rowcount>=totalrowcount)
{
lblQuesNo.Text = "Not Available";
lblQues.Text = "No more questions available.";
}
else
{
cmd.CommandText = "select * from questionstb where subject='" + Request.QueryString["sid"] + "'";
con.Open();
cmd.Connection = con;
rdr = cmd.ExecuteReader();
dt3.Load(rdr);
rdr.Close();
totalrowcount = dt3.Rows.Count;
lblQuesNo.Text = (rowcount+1).ToString();
lblQues.Text = dt3.Rows[rowcount]["question"].ToString();
dt1.Load(rdr);
id = dt3.Rows[rowcount]["qid"].ToString();
cmd.CommandText = "select * from optionstb where qid='" + id + "'";
rdr = cmd.ExecuteReader();
DataTable dt2 = new DataTable();
dt2.Load(rdr);
rdr.Close();
RadioButton1.Text = dt2.Rows[0]["choice"].ToString();
RadioButton2.Text = dt2.Rows[1]["choice"].ToString();
RadioButton3.Text = dt2.Rows[2]["choice"].ToString();
RadioButton4.Text = dt2.Rows[3]["choice"].ToString();
cmd.CommandText = "select * from optionstb where qid='"+id+"'";
rdr = cmd.ExecuteReader();
DataTable d=new DataTable();
d.Load(rdr);
correctans = d.Rows[0]["correct"].ToString();
if (RadioButton1.Checked == true && RadioButton1.Text == correctans)
{
correctcount = correctcount + 1;
}
else if (RadioButton2.Checked == true && RadioButton2.Text == correctans)
{
correctcount = correctcount + 1;
}
else if (RadioButton3.Checked == true && RadioButton3.Text == correctans)
{
correctcount = correctcount + 1;
}
else if (RadioButton4.Checked == true && RadioButton4.Text == correctans)
{
correctcount = correctcount + 1;
}
rowcount = rowcount + 1;
}
}
else
{
con.Close();
Label2.Text = correctcount.ToString();
question.Style.Add("display","none");
Panel1.Style.Add("display", "block");
btnNext.Text = "";
lblQ.Text = "Result";
btnHome.Style.Add("display", "block");
lblQuesNo.Text = "";
btnNext.Style.Add("background", "none");
btnNext.Style.Add("border", "none");
}
}
protected void btnHome_Click(object sender, EventArgs e)
{
rowcount = 0;
correctcount = 0;
Response.Redirect("testselect.aspx");
}
}
答案 0 :(得分：0)
您应该放置控制此过程的代码块。否则我们无法帮助你。