protected void nextBtn_Click(object sender, EventArgs e)
{
//Creating a new list to store follow up questions
List <Int32> followUpQuestions = new List <int>();
//Getting the answer list from session
List <Answer> answers = getListOfAnswerFromSession();
try
{
//If list of follow up questions exists then use it instead of the empty list
if (HttpContext.Current.Session["followUpQuestions"] != null)
{
followUpQuestions = (List <Int32>)HttpContext.Current.Session["followUpQuestions"];
}
//Getting connection from database helper class
SqlConnection connection = DatabaseHelper.GetConnection();
//lets try find checkbox question contol in web page
CheckType checkTypeQuestion = (CheckType)questionPlaceholder.FindControl("checkboxQuestionControl");
if (checkTypeQuestion != null)
{
//then its a checkbox question
foreach (ListItem item in checkTypeQuestion.CheckList.Items)
{
if (item.Selected)
{
int optionID = Int32.Parse(item.Value);
//creating a new answer based on answer class
Answer a = new Answer();
a.questionID = GetCurrentQuestionNumber();
a.optionID = optionID;
//adding answers to session list
answers.Add(a);
//Creating a command to check what the next question depending on answer is
SqlCommand nextQuestionCommand = new SqlCommand("SELECT * FROM [option] WHERE optionID = "
+ optionID + " AND nextQuestion IS NOT NULL ", connection);
//reding the command I just created
SqlDataReader nextQuestionReader = nextQuestionCommand.ExecuteReader();
//cycle though next questions
while (nextQuestionReader.Read())
{
int nextQuestionItem = (int)nextQuestionReader["nextQuestion"];
//if follow up questions doesnt already exist, add it
if (!followUpQuestions.Contains(nextQuestionItem))
{
followUpQuestions.Add(nextQuestionItem);
}
}
}
}
}
//ok lets now try if its the radiotype question
RadioType radioTypeQuestion = (RadioType)questionPlaceholder.FindControl("radioboxQuestionControl");
if (radioTypeQuestion != null)
{
//then its a radio question
//cycle though radiotype questions
foreach (ListItem item in radioTypeQuestion.RadioList.Items)
{
if (item.Selected)
{
//creating an option id of the value of item
int optionID = Int32.Parse(item.Value);
//creating a new answer based on answer class
Answer a = new Answer();
a.questionID = GetCurrentQuestionNumber();
a.optionID = optionID;
//adding answers to session list
answers.Add(a);
}
}
}
//ok lets now try if its the texttype question
TextType textTypeQuestion = (TextType)questionPlaceholder.FindControl("textboxQuestionControl");
if (textTypeQuestion != null)
{
//then its a text type question
//adding answer to db
Answer a = new Answer();
a.questionID = GetCurrentQuestionNumber();
//getting value from textbox
a.answerText = textTypeQuestion.TextboxInputQuestion.Text;
answers.Add(a);
}
//creating a variable to check what current question is
int currentQuestion = GetCurrentQuestionNumber();
//Finding out what the next question is
SqlCommand command = new SqlCommand("SELECT * FROM question where questionID = " + currentQuestion, connection);
SqlDataReader reader = command.ExecuteReader();
//save to session list
HttpContext.Current.Session["answers"] = answers;
//Looping through result
while (reader.Read())
{
//if at the end of the survey, next question foreign key column will be NULL, so I'm checking for NULLS first
//first, get index of nextQuestion column
int nextQuestionColumnIndex = reader.GetOrdinal("nextQuestionID");
//use this index to check if column is null
//IF THERE IS FOLLOW UP QUESTIONS THOUGH, do them first.
if (followUpQuestions.Count > 0)
{
//set current question to first follow up question, then remove from follow up question list
// - so it doesnt repeat for next time
HttpContext.Current.Session["questionID"] = followUpQuestions[0];
followUpQuestions.RemoveAt(0);
HttpContext.Current.Session["followUpQuestions"] = followUpQuestions;
//redirect to same page to load up the next question as current question (aka, run pageLoad again)
Response.Redirect("question.aspx");
}
//IF ITS THE END OF SURVEY
else if (reader.IsDBNull(nextQuestionColumnIndex))
{
//redirect to register page
Response.Redirect("Register.aspx");
//in registration page or end of survey save sesion list to db
}
//If there are not follow questions
else
{
//not end of survey!
int nextQuestion = (int)reader["nextQuestionID"];
//set this as the current question in the session
HttpContext.Current.Session["questionID"] = nextQuestion;
//store the follow up questions list in session (just in case it changed)
HttpContext.Current.Session["followUpQuestions"] = followUpQuestions;
//redirect to same page to load up the next question as current question (aka, run pageLoad again)
Response.Redirect("question.aspx");
}
}
//closing the connection to db
connection.Close();
}
catch (Exception ex)
{
Console.WriteLine("Couldn't read next question");
}
}
protected void Page_Load(object sender, EventArgs e)
{
//creating a variable to check what current question is
int currentQuestion = GetCurrentQuestionNumber();
try
{
//getting connection from database helper class
SqlConnection connection = DatabaseHelper.GetConnection();
//building a sql command to get current question
SqlCommand command = new SqlCommand("SELECT * FROM question, type WHERE question.typeID = type.typeID AND question.questionID = " + currentQuestion, connection);
//run command, store results in SqlDataReader
SqlDataReader reader = command.ExecuteReader();
//loop through rows of results
while (reader.Read())
{
//get question text and type from this row of results
string questionText = reader["text"].ToString();
string questionType = reader["name"].ToString().ToLower(); //checkbox, textbox, radio
//If its a textbox question
if (questionType.Equals("textbox"))
{
TextType textTypeQuestion = (TextType)LoadControl("~/TextType.ascx");
textTypeQuestion.ID = "textboxQuestionControl";
textTypeQuestion.QuestionLabel.Text = questionText;
//adding it to the placeholder in my webpage
questionPlaceholder.Controls.Add(textTypeQuestion);
}
//If its a checkbox question
else if (questionType.Equals("checkbox"))
{
//creating an instance of checktype function
CheckType checkTypeQuestion = (CheckType)LoadControl("~/CheckType.ascx");
//setting the id
checkTypeQuestion.ID = "checkboxQuestionControl";
//setting the text of label
checkTypeQuestion.QuestionLabel.Text = questionText;
//need a new command to get all options belonging to question
SqlCommand optionCommand = new SqlCommand(
"SELECT * FROM [option] WHERE questionID = " + currentQuestion, connection);
//reading the command I just created
SqlDataReader optionReader = optionCommand.ExecuteReader();
//cycle through rows of options
while (optionReader.Read())
{
//for every row, I am building a list item representing it
ListItem item = new ListItem(optionReader["value"].ToString(), optionReader["optionID"].ToString());
//add item to my checkbox list
checkTypeQuestion.CheckList.Items.Add(item);
}
//adding checktype question to placeholder
questionPlaceholder.Controls.Add(checkTypeQuestion);
}
//If its a radio button question
else if (questionType.Equals("radio"))
{
//creating an instance of radiotype function
RadioType radioTypeQuestion = (RadioType)LoadControl("~/RadioType.ascx");
//setting the id
radioTypeQuestion.ID = "radioboxQuestionControl";
//setting the text of label
radioTypeQuestion.QuestionLabel.Text = questionText;
//need a new command to get all options belonging to question
SqlCommand optionCommand = new SqlCommand(
"SELECT * FROM [option] WHERE questionID = " + currentQuestion, connection);
//reading the command I just created
SqlDataReader optionReader = optionCommand.ExecuteReader();
//cycle through rows of options
while (optionReader.Read())
{
//for every row, I am building a list item representing it
ListItem item = new ListItem(optionReader["value"].ToString(), optionReader["optionID"].ToString());
//add item to my radio list
radioTypeQuestion.RadioList.Items.Add(item);
}
//adding radio type question to placeholder
questionPlaceholder.Controls.Add(radioTypeQuestion);
}
}
//closing connection to db
connection.Close();
}
catch (Exception ex)
{
Console.WriteLine("Could not read question");
}
}