In Online Exam,How I Will Show The Next quest and ans After Clicking The Next Button.I Can Show Only The First quest

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the code i have so far tried

protected void Page_Load(object sender, EventArgs e)
 { 
if (!IsPostBack) 
{ 
Time(); 
Question(); 
}

}
public void Question()
{
int res2 = Convert.ToInt32(lblsubject.Text);
var res3 = (from test in obj.Quest where test.subid == res2 select test).FirstOrDefault();
if (res3 != null)
{
lblqst.Text = res3.question;

opt1.Text = res3.answ1;
opt2.Text = res3.answ2;
opt3.Text = res3.answ3;
opt4.Text = res3.answ4;
}
}
protected void btn_next_Click(object sender, EventArgs e)
{

/*what code to use here?this is the next button where after clicking it next question will display*/
}

Posted 31-Jan-14 17:24pm

Member 10488678

Updated 31-Jan-14 17:30pm

JoCodes

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JoCodes 31-Jan-14 23:34pm

Tell me one thing, the next question is randomly picked or as per the lblSubject.Text value?

Karthik_Mahalingam 31-Jan-14 23:48pm

it depends up on the logic of you SQL design..
whether the subid is arranged in incremental order ??

Peter Leow 1-Feb-14 0:20am

In a real online exam scenario, the sequence of questions appearing on screen of each candidate should be random. For example, candidates A and B will see different questions appearing as Question 1 on their respective screens. Internally, each question will be identified by a unique key. In this way, firstly, the candidates cannot memorize answers by sequence; secondly, it prevents "eye-dropping" from neighboring candidates.

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Karthik_Mahalingam · Answer 1 · 2014-01-31T17:55:00

if you subid is formed in incremental order by seed 1 then this will work for you..

C#

protected void btn_next_Click(object sender, EventArgs e)
{
 
int res2 = Convert.ToInt32(lblsubject.Text);
res2 ++;
var res3 = (from test in obj.Quest where test.subid == res2 select test).FirstOrDefault();
if (res3 != null)
{
lblqst.Text = res3.question;
 
opt1.Text = res3.answ1;
opt2.Text = res3.answ2;
opt3.Text = res3.answ3;
opt4.Text = res3.answ4;
}
}

_________
Karthik

JoCodes · Answer 2 · 2014-01-31T18:34:00

Assuming that the Subject has multiple Questions and Answers.

One simple way to do it can be using Skip and Take Methods of Linq .This makes you to Skip current record and Take the Next one.

Something like

(from test in obj.Quest where test.subid == res2 select test).Skip(RecordNumber-1).Take(1).Single();//or FirstOrDefault

First time the RecordNumber should set to 1 and then on ButtonClick should increment.
And should also reset it if the Subject changes. Pass the RecordNumber as a parameter to the Question() method so that only one method can be reused.

PS: Note that Peter Leow has mentioned a very valid comment . You should consider Randomize record fetch using Order By in Linq query.
Random Order[^]

In Online Exam,How I Will Show The Next quest and ans After Clicking The Next Button.I Can Show Only The First quest

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