Question

我将使用c＃在asp.net中构建在线考试系统。我已经创建了一个在线考试的向导，但每当我进入下一步然后回到上一步，我发现所选择的radiobuttonr仍未被选中。为什么会这样？什么是解决方案？

我还想问一个问题： - 我可以在每个步骤的顶部放置计时器，考试名称和总分，而不必在向导控制的每一步中重复它吗？如果是，那怎么办？

以下是向导第一步的.cs代码： -

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
using System.Configuration;

public partial class Demo : System.Web.UI.Page
{
SqlConnection con;

public Demo()
{
    con = new SqlConnection();
    con.ConnectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ToString();

}


protected void Page_Load(object sender, EventArgs e)
{

}
protected void wizard1(Object sender, System.EventArgs e)
{
    SqlDataAdapter adp = new SqlDataAdapter("select top 10 Question,Option1,Option2,Option3,Option4 from Questions", con);
    DataTable dt = new DataTable();
    adp.Fill(dt);
    Repeater1.DataSource = dt;
    Repeater1.DataBind();


}
}

以下是.aspx代码： -

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Demo.aspx.cs" Inherits="Demo" %>

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Wizard ID="Wizard1" runat="server" BackColor="#E6E2D8" BorderColor="#999999" BorderStyle="Solid" BorderWidth="1px" Font-Names="Verdana" Font-Size="0.8em" Height="433px" Width="581px">
            <HeaderStyle BackColor="#666666" BorderColor="#E6E2D8" BorderStyle="Solid" BorderWidth="2px" Font-Bold="True" Font-Size="0.9em" ForeColor="White" HorizontalAlign="Center" />
            <NavigationButtonStyle BackColor="White" BorderColor="#C5BBAF" BorderStyle="Solid" BorderWidth="1px" Font-Names="Verdana" Font-Size="0.8em" ForeColor="#1C5E55" />
            <SideBarButtonStyle ForeColor="White" />
            <SideBarStyle BackColor="#1C5E55" Font-Size="0.9em" VerticalAlign="Top" />
            <StepStyle BackColor="#F7F6F3" BorderColor="#E6E2D8" BorderStyle="Solid" BorderWidth="2px" />
            <WizardSteps>

                <asp:WizardStep runat="server" Title="Instructions">
                    Click next and start your exam!!!

                </asp:WizardStep>

                <asp:WizardStep ID="WizardStep1" runat="server" Title="Reasoning" OnActivate="wizard1">

                    <asp:Repeater ID="Repeater1" runat="server">

                        <ItemTemplate>

                             <table border=1>

                                 <tr>

                                     <td>
                                         <asp:Label ID="Label1" runat="server" Text="1"></asp:Label>
                                     </td>

                                     <td>
                                         <%#DataBinder.Eval(Container.DataItem,"Question") %>
                                     </td>

                                 </tr>
                                 <tr>

                                     <td></td>

                                     <td><asp:RadioButton ID="RadioButton1" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Option1")%>' /></td>

                                 </tr>

                                 <tr>

                                     <td></td>

                                     <td><asp:RadioButton ID="RadioButton2" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Option2")%>' /></td>

                                 </tr>

                                 <tr>

                                     <td></td>

                                     <td><asp:RadioButton ID="RadioButton3" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Option3")%>' /></td>

                                 </tr>

                                 <tr>

                                     <td></td>

                                     <td><asp:RadioButton ID="RadioButton4" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Option4")%>' /></td>

                                 </tr>
                        </ItemTemplate>
                    </asp:Repeater>
                </asp:WizardStep>
                <asp:WizardStep ID="WizardStep2" runat="server" Title="Quantitative Aptitude"></asp:WizardStep>
                <asp:WizardStep runat="server" Title="English">
                </asp:WizardStep>
                <asp:WizardStep runat="server" Title="Mathematics">
                </asp:WizardStep>
                <asp:WizardStep runat="server" Title="Computer Concepts">
                </asp:WizardStep>
                
            </WizardSteps>
        </asp:Wizard>
    </div>
    </form>
</body>
</html>

Answer 1

不需要＆＃34; protected void wizard1（Object sender，System.EventArgs e）＆＃34;。删除它。

创建一个fill（）方法并绑定该函数中的数据。

 public void fill()
    {
        SqlDataAdapter adp = new SqlDataAdapter("select top 10 Question,Option1,Option2,Option3,Option4 from Questions", con);
        DataTable dt = new DataTable();
        adp.Fill(dt);
        Repeater1.DataSource = dt;
        Repeater1.DataBind();
    }

在Page_load添加条件

中非常重要

        if (!IsPostBack)
        {
            fill();
        }

如何在向导控件中设置先前选中的单选按钮？

1 个答案: