how to get previous question by using below code..

Question

hi, friends i want to get previous question when i am click on previous button , i got a next question but i can not do for previous question so please write a cod or give a refer url to me.... i hope you understand my problem...Thank you.i am waiting for your reply

 

protected void btn_next_Click(object sender, EventArgs e)

{

getNextQuestion();

}

protected void btn_startexam_Click(object sender, EventArgs e)

{

btn_startexam.Visible = false;

Panel1.Visible = true;

int score = Convert.ToInt32(txtScore.Text);

lblScore.Text = "Score : " + Convert.ToString(score);

Session["counter"] = "1";

Random rnd = new Random();

int i = rnd.Next(1, 10);//Here specify your starting slno of question table and ending no.

getQuestion(i);

}

public void getQuestion(int no)

{

string str = "select * from Question where slNo=" + no + "";

SqlDataAdapter da2 = new SqlDataAdapter(str, sqlconn);

DataSet ds2 = new DataSet();

da2.Fill(ds2, "Question");

if (ds2.Tables[0].Rows.Count > 0)

{

DataRow dtr;

int i = 0;

while (i < ds2.Tables[0].Rows.Count)

{

dtr = ds2.Tables[0].Rows[i];

Session["Answer"] = Convert.ToString(Convert.ToInt32(dtr["Correct"].ToString()) - 1);

lblQuestion.Text = "Q." + Session["counter"].ToString() + " " + dtr["Question"].ToString();

RblOption.ClearSelection();

RblOption.Items.Clear();

RblOption.Items.Add(dtr["Option1"].ToString());

RblOption.Items.Add(dtr["Option2"].ToString());

RblOption.Items.Add(dtr["Option3"].ToString());

RblOption.Items.Add(dtr["Option4"].ToString());

i++;

}

}

}

 

public void getNextQuestion()

{

if (Convert.ToInt32(Session["counter"].ToString()) < 10)//10 is a counter which is used for 10 questions

{

if (RblOption.SelectedIndex >= 0)

{

if (Session["Answer"].ToString() == RblOption.SelectedIndex.ToString())

{

int score = Convert.ToInt32(txtScore.Text) + 1;// 1 for mark for each question

txtScore.Text = score.ToString();

lblScore.Text = "Score : " + Convert.ToString(score);

}

}

Random rnd = new Random();

int i = rnd.Next(1, 10);

//lblQuestion.Text = i.ToString();

getQuestion(i);

Session["counter"] = Convert.ToString(Convert.ToInt32(Session["counter"].ToString()) + 1);

}

else

{

Panel2.Visible = false;

//code for displaying after completting the exam, if you want to show the result then you can code here.

}

}

 

 

 

 

public void GetPrevQuestion(int prev)

{

write your code for me...

}