//
//On changing the Format ComboBox: Resets & Disables controls, Loads No Of Question ComboBox, gets and sets the value of No of Questions
//
private void formatCombo_SelectedIndexChanged(object sender, EventArgs e)
{
//Resets & Disables controls
noOfQuestionsCombo.Items.Clear();
noOfQuestionsCombo.ResetText();
//Loads No Of Question ComboBox
Questions q = new Questions();
q.exam_Type = examTypeText.Text;
q.section = sectionCombo.SelectedItem.ToString();
q.format = formatCombo.SelectedItem.ToString();
int i = qb.getQuestionNoCount(q);
for (int j = 0; j <= i; j++)
{
noOfQuestionsCombo.Items.Add(j);
}
noOfQuestionsCombo.Enabled = true;
update.Enabled = true;
//Gets and sets the value of No of Questions
Paper s = new Paper();
s.exam_ID = ed.exam_ID;
s.section = sectionCombo.SelectedItem.ToString();
s.format = formatCombo.SelectedItem.ToString();
int no = p.getNoOfQuestions(s);
noOfQuestionsCombo.SelectedItem = no;
}
public Paper[] getPaperDetails(Paper p)
{
PaperDAL pq = new PaperDAL();
int a = pq.getRowCountForExam(p);
Paper[] g = new Paper[a];
g = pq.getPaperDetails(p);
return g;
}
protected void Page_Load(object sender, EventArgs e)
{
ed.exam_ID = (String)Session["exam_ID"];
examIDText.Text = ed.exam_ID;
int count = p.getRowCountForExam(ed);
Paper[] arr = new Paper[count];
arr = p.viewPaperDetails(ed, count);
paperDataGrid.DataSource = arr;
paperDataGrid.Enabled = false;
//paperDataGrid.EnableHeadersVisualStyles = true;
//paperDataGrid.GridColor = Color.DarkRed;
}
//
//On click on View button: Opens the ViewPaperDetails Form, displaying the Paper
//
protected void view_Click(object sender, EventArgs e)
{
if (examIDCombo.SelectedIndex != -1)
{
Paper p = new Paper();
p.exam_ID = examIDCombo.SelectedItem.ToString();
Session["exam_ID"] = p.exam_ID;
Response.Redirect("");
}
else
System.Web.HttpContext.Current.Response.Write("<SCRIPT LANGUAGE='JavaScript'>alert('Please select a valid Exam ID.')</SCRIPT>");
//MessageBox.Show("Please select a valid Exam ID.", "Error");
}
//
//Deletes paper, returns Success or Error Message
//
public string deletePaper(Paper b)
{
try
{
conn.Open();
cmd = new SqlCommand("Delete From SetPaper where Exam_ID='" + b.exam_ID + "'", conn);
int i =cmd.ExecuteNonQuery();
conn.Close();
if(i>0)
return "Paper for Exam " + b.exam_ID + " is successfully deleted";
else
return "Attempt unsuccessful. Sorry for the inconvenience.";
}
catch (Exception ex)
{
conn.Close();
return "Attempt unsuccessful. Sorry for the inconvenience.";
}
}
//
//Deletes the selected Exam & pops up a Success or Error message
//
protected void delete_Click(object sender, EventArgs e)
{
if (examIDCombo.SelectedIndex != -1)
{
Paper b = new Paper();
b.exam_ID = examIDCombo.SelectedItem.ToString();
//DialogResult result = MessageBox.Show("Are you sure you want delete " + examIDCombo.SelectedItem.ToString() + "?", "Delete Exam Type", MessageBoxButtons.YesNo);
//if (result == DialogResult.Yes)
string abc = ed.deletePaper(b);
System.Web.HttpContext.Current.Response.Write("<SCRIPT LANGUAGE='JavaScript'>alert(abc)</SCRIPT>");
//MessageBox.Show(abc, "Delete Paper");
}
else
System.Web.HttpContext.Current.Response.Write("<SCRIPT LANGUAGE='JavaScript'>alert('Please select a valid Exam ID.')</SCRIPT>");
//MessageBox.Show("Please select a valid Exam ID.", "Error");
this.Page_Load(sender, e);
}
//
//On click of Add: Validates selection, Adds it, and updates No Of Quesions Added
//
private void add_Click(object sender, EventArgs e)
{
//Validates selection and adds it
if ((sectionCombo.SelectedIndex == -1 )|| (formatCombo.SelectedIndex == -1) || (noOfQuestionsCombo.SelectedIndex == -1))
MessageBox.Show("Please select a valid entry","Error");
else
{
Paper s = new Paper();
s.exam_ID = ed.exam_ID;
s.section = sectionCombo.SelectedItem.ToString();
s.format = formatCombo.SelectedItem.ToString();
s.no_Of_Questions = Convert.ToInt32(noOfQuestionsCombo.SelectedItem);
string feed = p.addSectionFormat(s);
MessageBox.Show(feed, "Set Paper");
}
//Updates No Of Quesions Added
Paper pq = new Paper();
pq.exam_ID = ed.exam_ID;
noOfQuestionsText.Text = p.getAddedQuestionCount(pq)+"";
}
//
//On Form Load: Loads Exam ID ComboBox
//
private void ViewPaperDetails_Load(object sender, EventArgs e)
{
// to allign the Legend(Group Box) to
// the center of form
int centerForm;
int centerGroup;
int groupStartPosition;
centerForm = this.Width / 2;
centerGroup = paperDetailsLegend.Width / 2;
groupStartPosition = centerForm - centerGroup;
paperDetailsLegend.Left = groupStartPosition;
examIDText.Text = ed.exam_ID;
int count = p.getRowCountForExam(ed);
Paper[] arr = new Paper[count];
arr = p.viewPaperDetails(ed, count);
paperDataGrid.DataSource = arr;
paperDataGrid.Enabled = false;
paperDataGrid.EnableHeadersVisualStyles = true;
paperDataGrid.GridColor = Color.DarkRed;
}
//
//On click of Add: Validates selection, Adds it, and updates No Of Quesions Added
//
protected void add_Click(object sender, EventArgs e)
{
//Validates selection and adds it
if ((sectionCombo.SelectedIndex == -1) || (formatCombo.SelectedIndex == -1) || (noOfQuestionsCombo.SelectedIndex == -1))
System.Web.HttpContext.Current.Response.Write("<SCRIPT LANGUAGE='JavaScript'>alert('Please select a valid entry')</SCRIPT>");
//MessageBox.Show("Please select a valid entry", "Error");
else
{
Paper s = new Paper();
s.exam_ID = ed.exam_ID;
s.section = sectionCombo.SelectedItem.ToString();
s.format = formatCombo.SelectedItem.ToString();
s.no_Of_Questions = Convert.ToInt32(noOfQuestionsCombo.SelectedItem);
string feed = p.addSectionFormat(s);
System.Web.HttpContext.Current.Response.Write("<SCRIPT LANGUAGE='JavaScript'>alert('Successfully')</SCRIPT>");
//MessageBox.Show(feed, "Set Paper");
}
//Updates No Of Quesions Added
Paper pq = new Paper();
pq.exam_ID = ed.exam_ID;
noOfQuestionsText.Text = p.getAddedQuestionCount(pq) + "";
}
//
//Adds the selected Section-Format-No Of Questions, returns Success, Already Added or Error Message
//
public string addSectionFormat(Paper s)
{
try
{
conn.Open();
cmd = new SqlCommand("Insert into SetPaper(Exam_ID,Section,Format,No_Of_Questions) values('" + s.exam_ID + "','" + s.section + "','" + s.format + "'," + s.no_Of_Questions + ")", conn);
int i = cmd.ExecuteNonQuery();
conn.Close();
if(i==1)
return "Successfully added";
else
return "Some error occured. Sorry for the inconvenience.";
}
catch (SqlException ex)
{
conn.Close();
return "You have already added questions for the selected combination of Section-Format.";
}
catch (Exception e)
{
conn.Close();
return "Some error occured. Sorry for the inconvenience.";
}
}
//
//DAL call to delete Paper
//
public string deletePaper(Paper b)
{
string abc = pq.deletePaper(b);
return abc;
}
//
//DAL call to add selected Section-Format-No Of Questions
//
public string addSectionFormat(Paper s)
{
string abc = pq.addSectionFormat(s);
return abc;
}
//
//DAL call to get an array containing the paper Details for a given Paper
//
public Paper[] viewPaperDetails(Paper s, int count)
{
Paper[] arr = new Paper[count];
arr = pq.viewPaperDetails(s, count);
return arr;
}
//
//DAL call to update selected Section-Format-No Of Questions
//
public string updateSectionFormat(Paper s)
{
string feed = pq.updateSectionFormat(s);
return feed;
}
//
//On Form Load: Displays No of Added Question, Disables controls & Loads Section ComboBox
//
private void SetPaper_Load(object sender, EventArgs e)
{
// to allign the Legend(Group Box) to
// the center of form
int centerForm;
int centerGroup;
int groupStartPosition;
centerForm = this.Width / 2;
centerGroup = setPaperRegion.Width / 2;
groupStartPosition = centerForm - centerGroup;
setPaperRegion.Left = groupStartPosition;
// Displays No of Added Questions
Paper pq = new Paper();
pq.exam_ID = ed.exam_ID;
noOfQuestionsText.Text = p.getAddedQuestionCount(pq) + "";
//Diables controls
sectionCombo.Enabled = false;
formatCombo.Enabled = false;
noOfQuestionsCombo.Enabled = false;
add.Enabled = false;
//Loads Section ComboBox
Questions q = new Questions();
q.exam_Type = ed.exam_Type;
int i = qb.getSectionCount(q);
if (i > 0)
{
string[] abc = new string[i];
abc = qb.loadSection(q, i);
for (int j = 0; j < i; j++)
{
sectionCombo.Items.Add(abc[j]);
}
sectionCombo.Enabled = true;
}
else
MessageBox.Show("No Questions present in the database for the Exam Type of the selected Exam.", "Error");
}
public Paper[] getPaperDetails(Paper p)
{
SqlConnection cnNorth;
SqlCommand cmdOrders;
SqlDataReader dreadOrders;
string constr = @"Server=NIKKHIL-HP\sqlexpress;Integrated Security=true; database=OnlineExamination";
cnNorth = new SqlConnection(constr);
cnNorth.Open();
string query = string.Format("select Format from SetPaper where Exam_ID ='{0}'", p.exam_ID);
cmdOrders = new SqlCommand(query, cnNorth);
dreadOrders = cmdOrders.ExecuteReader();
DataTable dt = new DataTable();
dt.Load(dreadOrders);
int a = dt.Rows.Count;
Paper[] pa = new Paper[a];
return pa;
DataRow drow = dt.Rows[0];
pa[0].format = drow[0].ToString();
/* string[] tab = new string[a];
DataRow dr;
Object[] ob = new Object[1];
for (int i = 0; i < a; i++)
{
dr = dt.Rows[i];
ob= dr.ItemArray;
tab[i] = Convert.ToString(ob);
// tab[i] = ob.ToString();
}*/
dreadOrders.Close();
cnNorth.Close();
return pa;
}
public int getTotalQuestions(Paper pq)
{
PaperDAL ed = new PaperDAL();
int count = ed.getTotalQuestions(pq);
return count;
}
//
//Randomly selects questions for each Format-Section specification of the Paper as per the No Of Questions
//
public Questions[] getQuestionPaper(Paper[] arr, Questions[] q, Exam_Details ed)
{
int maxcount = 0, mincount = 0;
DataRow dr;
int index = 0;
Object[] abc = new Object[11];
string temp;
bool[] rand;
int no = 0;
int m;
int param = arr.Length;
DataTable dt;
conn.Open();
for (int l = 0; l < param; l++)
{
//Selects questions for each Format-Section specification of the Paper
cmd = new SqlCommand("Select * from Questions where Exam_Type ='" + ed.exam_Type + "' and Section ='" + arr[l].section + "' and Format ='" + arr[l].format + "'",conn);
dread = cmd.ExecuteReader();
dt = new DataTable();
dt.Load(dread);
//Random Selection of questions
maxcount = dt.Rows.Count;
mincount = arr[l].no_Of_Questions;
rand = new bool[maxcount];
no = 0;
while (no < mincount)
{
Random r = new Random();
m = r.Next(maxcount);
if (rand[m] == false)
{
rand[m] = true;
no++;
}
}
//Loads the randomly selected question into Question Array
for (int i = 0; i < maxcount; i++)
{
if (rand[i] == true)
{
q[index] = new Questions();
dr = dt.Rows[i];
abc = dr.ItemArray;
q[index].question_ID = (string)abc.ElementAt(0);
q[index].exam_Type = (string)abc.ElementAt(1);
q[index].format = (string)abc.ElementAt(2);
q[index].question = (string)abc.ElementAt(3);
q[index].option1 = (string)abc.ElementAt(4);
q[index].option2 = (string)abc.ElementAt(5);
q[index].option3 = (string)abc.ElementAt(6);
q[index].option4 = (string)abc.ElementAt(7);
q[index].solution = (string)abc.ElementAt(8);
temp = abc.ElementAt(9).ToString();
q[index].marks = Convert.ToInt32(temp);
q[index].section = (string)abc.ElementAt(10);
if((q[index].format.Equals("Picture Question: Single Answer") )|| (q[index].format.Equals("Picture Question: Multiple Answer")))
q[index].picture_ID = (string)abc.ElementAt(11);
index++;
}
}
}
dread.Close();
conn.Close();
return q;
}
//
//DAL call to get the number of added questions for a particular Exam ID
//
public int getAddedQuestionCount(Paper p)
{
int i = pq.getAddedQuestionCount(p);
return i;
}
//
//Gets the row count for given Exam in Set Paper table
//
public int getRowCountForExam(Paper p)
{
conn.Open();
cmd = new SqlCommand("select Section, Format, No_Of_Questions from SetPaper where Exam_ID ='"+p.exam_ID+"'", conn);
dread = cmd.ExecuteReader();
DataTable dt = new DataTable();
dt.Load(dread);
int a = dt.Rows.Count;
dread.Close();
conn.Close();
return a;
}
//
//Returns an array containing the paper Details for a given Paper
//
public Paper[] viewPaperDetails(Paper s, int count)
{
Paper[] arr = new Paper[count];
conn.Open();
cmd = new SqlCommand("select Section, Format, No_Of_Questions from SetPaper where Exam_ID ='"+s.exam_ID+"'", conn);
dread = cmd.ExecuteReader();
for (int i = 0; i < count; i++)
{
dread.Read();
arr[i] = new Paper();
arr[i].section = dread[0].ToString();
arr[i].format = dread[1].ToString();
arr[i].no_Of_Questions = Convert.ToInt32(dread[2].ToString());
arr[i].exam_ID = s.exam_ID;
}
dread.Close();
conn.Close();
return arr;
}
//
//Updates the selected Section-Format-No Of Questions, returns Success, or Error Message
//
public string updateSectionFormat(Paper s)
{
int count;
try
{
conn.Open();
cmd = new SqlCommand("Update SetPaper SET No_Of_Questions="+s.no_Of_Questions+" Where Exam_ID='" + s.exam_ID + "' and Section='" + s.section + "' and Format ='" + s.format + "'");
count = cmd.ExecuteNonQuery();
if (count == 0)
{
cmd = new SqlCommand("Insert into SetPaper(Exam_ID,Section,Format,No_Of_Questions) values('" + s.exam_ID + "','" + s.section + "','" + s.format + "'," + s.no_Of_Questions + ")", conn);
count = cmd.ExecuteNonQuery();
}
conn.Close();
if (count == 1)
return "Successfully Updated.";
else
return "Some error occured. Sorry for the inconvenience.";
}
catch (Exception ex)
{
conn.Close();
return "Some error occured. Sorry for the inconvenience.";
}
}
public int getTotalQuestions(Paper pq)
{
SqlConnection cnNorth;
SqlCommand cmdProducts;
SqlDataReader dreadProducts;
string constr = @"Server=NIKKHIL-HP\sqlexpress;Integrated Security=true; database=OnlineExamination";
cnNorth = new SqlConnection(constr);
cnNorth = new SqlConnection(constr);
cmdProducts = new SqlCommand("select * from Paper", cnNorth);
cnNorth.Open();
dreadProducts = cmdProducts.ExecuteReader();
int j = 0;
while (dreadProducts.Read())
{
j++;
}
constr = @"Server=NIKKHIL-HP\sqlexpress;Integrated Security=true; database=OnlineExamination";
cnNorth = new SqlConnection(constr);
cnNorth = new SqlConnection(constr);
String query = string.Format("select No_Of_Questions from Paper where Exam_ID = '{0}'", pq.exam_ID);
cmdProducts = new SqlCommand(query, cnNorth);
//cmdProducts = new SqlCommand("select No_Of_Questions from Paper", cnNorth);
cnNorth.Open();
dreadProducts = cmdProducts.ExecuteReader();
int[] a = new int[j];
int count = 0;
string b;
while (dreadProducts.Read())
{
b = dreadProducts[0].ToString();
count += Convert.ToInt32(b);
}
dreadProducts.Close();
return count;
}
public int getTotalMarks(Paper pq)
{
string constr = @"Server=NIKKHIL-HP\sqlexpress;Integrated Security=true; database=OnlineExamination";
SqlDataAdapter da = new SqlDataAdapter();
SqlCommandBuilder sb = new SqlCommandBuilder(da);
SqlConnection conn = new SqlConnection(constr);
conn.Open();
SqlTransaction tran = conn.BeginTransaction();
String sql = "Select Marks from TempPaper where Exam_ID ='" + pq.exam_ID + "'";
da.SelectCommand = new SqlCommand(sql, conn, tran);
DataSet ds = new DataSet();
da.Fill(ds, "TempPaper");
DataTable dt = ds.Tables["TempPaper"];
int sum = 0;
int a = dt.Rows.Count;
DataRow dr;
string m;
int n;
for (int i = 0; i < a; i++)
{
dr = dt.Rows[i];
m = dr[0].ToString();
n = Convert.ToInt32(m);
sum += n;
}
conn.Close();
return sum ;
}
//
//DAL call to get the No Of Questions for the Section-Format combination for the given Exam
//
public int getNoOfQuestions(Paper s)
{
int a = pq.getNoOfQuestions(s);
return a;
}
//
//Accepts the passed Paper from ViewPaper form
//
public ViewPaperDetails(Paper e)
{
InitializeComponent();
ed = e;
}
//
//DAL call to get the row count for given Exam in Set Paper table
//
public int getRowCountForExam(Paper p)
{
int a = pq.getRowCountForExam(p);
return a;
}
//
//On click Of Start Button
//
protected void startTest_Click(object sender, EventArgs e)
{
//DialogResult r = MessageBox.Show("Are you sure you want to start the test?", "Start the Test", MessageBoxButtons.OKCancel);
string confirmValue = Request.Form["confirm_value"];
if (confirmValue == "Yes")
{
//Gets the Set Paper Details for the Exam
Paper s = new Paper();
s.exam_ID = ed.exam_ID;
PaperBS p = new PaperBS();
int scount = p.getRowCountForExam(s);
Paper[] arr = new Paper[scount];
arr = p.viewPaperDetails(s, scount);
//Timer duration
int timeLeft = ed.duration * 60;
//Gets the questions according to the set paper details after random selection and shuffling
int qcount = p.getAddedQuestionCount(s);
q = new Questions[qcount];
QuestionsBS b = new QuestionsBS();
q = b.getQuestionPaper(arr, q, ed);
//Initializes the Answers array and Bookmark array
AnswerBS ab = new AnswerBS();
a = new Answers[qcount];
a = ab.initializeAnswersArray(a, q, ed, emp);
b1 = new Bookmark[qcount];
b1 = ab.initializeBookmarksArray(b1);
//Swap Options
Questions[] qnew = b.swapOptions(q);
Int32 n = 0;
Session["noOfQues"] = q.Count();
Session["questions"] = qnew;
Session["answers"] = a;
Session["bookmark"] = b1;
Session["ind"] = n;
Session["time"] = timeLeft;
Session["employee"] = emp;
Session["exam"] = ed;
Session["timeout"] = DateTime.Now.AddMinutes(ed.duration).ToString();
//Chooses the first from according to the format of first question
string first = qnew[0].format;
switch (first)
{
case "Match The Column":
Response.Redirect("~/MatchTheColumnTest.aspx");
break;
case "MCQ (Single Answer)":
Response.Redirect("~/SingleAnswerTest.aspx");
break;
case "MCQ (Multiple Answers)":
Response.Redirect("~/MultipleAnswerTest.aspx");
break;
case "Picture Question: Single Answer":
Response.Redirect("~/PictureQuestionSingleAns.aspx");
break;
case "Picture Question: Multiple Answer":
Response.Redirect("~/PictureQuestionMultipleAnswer.aspx");
break;
}
}
}
//
//Returns the number of added Questions for a given Exam ID
//
public int getAddedQuestionCount(Paper pq)
{
cmd = new SqlCommand("select No_Of_Questions from SetPaper where Exam_ID='" + pq.exam_ID + "'", conn);
conn.Open();
dread = cmd.ExecuteReader();
int count = 0;
while (dread.Read())
{
string n = dread["No_Of_Questions"].ToString();
int m = Convert.ToInt32(n);
count += m;
}
dread.Close();
conn.Close();
return count;
}
//
//Gets the No Of Questions for the Section-Format combination for the given Exam
//
public int getNoOfQuestions(Paper pq)
{
try
{
cmd = new SqlCommand("select No_Of_Questions from SetPaper where Exam_ID='" + pq.exam_ID + "' and Section ='" + pq.section + "' and Format = '" + pq.format + "'", conn);
conn.Open();
int i = (int)cmd.ExecuteScalar();
conn.Close();
return i;
}
catch (SqlException e)
{
conn.Close();
return 0;
}
catch(Exception e)
{
conn.Close();
return 0;
}
}
