在线考试系统 [英] online examination system

问题描述

先生
下一个问题按钮的代码有问题.我编写了代码，但是单击下一步按钮时，它仅显示两个问题.
我的代码如下:-

sir
have a problem in code for the next question button. i write a code but on clicking the next button it shows only two questions.
my code is as follows:-

public partial class test : System.Web.UI.Page
{
    int x = 0;
    int ans1 = 0;
    SqlConnection ob = new SqlConnection(ConfigurationManager.ConnectionStrings["upsc"].ToString());
     
       
        
    protected void Page_Load(object sender, EventArgs e)
    {
        question();
    }
    protected void question()
    {
        ob.Open();
       
        String a = "Select que,op1,op2,op3,op4,answer from test";
        SqlDataAdapter objcmd = new SqlDataAdapter(a, ob);
        DataSet ds = new DataSet();
        objcmd.Fill(ds, "exam" );
        lblQues.Text = ds.Tables["exam"].Rows[x][0].ToString();
        RadioButton1.Text = ds.Tables["exam"].Rows[x][1].ToString();
        RadioButton2.Text = ds.Tables["exam"].Rows[x][2].ToString();
        RadioButton3.Text = ds.Tables["exam"].Rows[x][3].ToString();
        RadioButton4.Text = ds.Tables["exam"].Rows[x][4].ToString();
        ans.Text = ds.Tables["exam"].Rows[x][5].ToString();
       

        x++;
        ob.Close();
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        ob.Open();
        
        lblQues.Text = ds.Tables["exam"].Rows[x][0].ToString();
        RadioButton1.Text = ds.Tables["exam"].Rows[x][1].ToString();
        RadioButton2.Text = ds.Tables["exam"].Rows[x][2].ToString();
        RadioButton3.Text = ds.Tables["exam"].Rows[x][3].ToString();
        RadioButton4.Text = ds.Tables["exam"].Rows[x][4].ToString();
        ans.Text = ds.Tables["exam"].Rows[x][5].ToString();


        x++;
    }

   
}

推荐答案

如代码所示，

在Page_Load上，它将第一个问题加载为x = 0，在Button1_Click上，它在x变为1时显示第二个问题.根据提供的代码，您正在编写并说过此代码.

我假设通过说它仅显示两个问题" ，您可能希望根据按钮的单击顺序显示问题.如果是这样，您可以尝试，

• 您可以根据当前问题的编号分别检索每个问题，而无需将其存储在某处，请阅读有关 ASP.NET状态管理概述 [ ^ ].一次检索一个问题可能存在性能问题.
  

As the code shows,

On the Page_Load it loads the first question as x=0 and on the Button1_Click it shows the second question as x becomes 1. Based on the provided code it is doing as you wrote and said.

I assume by saying "it shows only two questions" you might want to display the question in sequence based on the button click. If that''s the case, you might try,

• You might retrieved each question individually based on the current question no which you need to store somewhere, read more about ASP.NET State Management Overview[^]. There might be performance issue for retrieving one question at a time.
  

这篇关于在线考试系统的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！