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Hello everyone,

I have one database in which there is a table called question and another table called question_answers

there are 2 types of questions namely : multiple choice and single response..

I want to fetch the question and its answers using JSON ..
I am retrieving data using WebMethod from SQL database

my code is : JSON
function take_test(){
    $.ajax({
        type: "POST",
        contentType: "application/json; charset=utf-8",
        url: "LoadTest.aspx/GetQuiz",
        data: "{}",
        dataType: "json",
        success: function (data) {
            //            for (var i = 0; i < data.d.length; i++) {
            //                $("#tbDetails").append("<tr><td>" + data.d[i].UserId + "</td><td>" + data.d[i].UserName + "</td><td>" + data.d[i].Location + "</td></tr>");
            //            }
            alert(data);
        },
        error: function (result) {
            alert(result);
        }
    });
}


code behind :

  [WebMethod]
    // Let .net handle the request and response as json automatically.
    public static FetchQuiz[] GetQuiz(FetchQuiz q)
    {
        DataSet ds = new DataSet();
        List<FetchQuiz> details = new List<FetchQuiz>();
        SQLDataAccessHelper sq = new SQLDataAccessHelper();
        string query = "";
        query = "select * from tbl_question_master order by Id";
        ds = sq.ExecuteCommandText(query);
        for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
        {
            FetchQuiz quiz = new FetchQuiz();
            quiz.Question = ds.Tables [0].Rows[i]["question"].ToString();
            quiz.Answer = ds.Tables[0].Rows[i]["answer"].ToString();
           // quiz.CorrectAnswer = ds.Tables[0].Rows[i]["UserId"].ToString();
            details.Add(quiz);
        }

        return details.ToArray();
    }
}
public class FetchQuiz
{
    public string Question { get; set; }
    public string Answer { get; set; }
   // public string CorrectAnswer { get; set; }
    //public string Type { get; set; }

}


Now the problem here is i m not able to get data... also i am not aware how to iterate with data..

my data would be in this format

Question Id Type Question Answer
1 MCQ abc a
1 MCQ abc b
1 MCQ abc c
2 SR xyz a
2 SR xyz b


i want to display data in div tag in this format
[Question]
A [Option1]
B [Option2]
C [Option3]

and so on...

Please help me to achieve this.

Thanks in advance

Krunal
Posted
Comments
JoCodes 7-Feb-14 9:43am    
The code looks ok. Is there any error while iterating through the Objects?
krunalpanchalN 7-Feb-14 9:47am    
Hi,

It doesnt works.. it shows me blank message box.. though i have data in my database

Please help..

JoCodes 7-Feb-14 9:51am    
Tell me whether you have data in this function (data) ajax call?
krunalpanchalN 7-Feb-14 9:52am    
Yes i do have data...
JoCodes 7-Feb-14 9:56am    
That means the WebMethod returns collection correctly . What about the Commented Code in Ajax call for iteration?

1 solution

Look at the link below. Basically it's a javascript plugin called knockout.
it binds data to html controls, so in your problem you can e.g. do
HTML
<div databind="foreach: { data: question, as 'question' }"></div>

then some html to render each question e.g. as
HTML
<ul><li>Question 1: blah blah</li></ul>


If you have a little time to lear it, it's the best thing to handle json data to html.

Knockout from json[^]
 
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