protected void Page_Load(object sender, EventArgs e)
{
if (Session["Unit1Answers"] == null)
{
Response.Redirect("~/Test/Page1.aspx");
}
// Load the XML document that contains the questions
XmlDocument questionDocument = new XmlDocument();
questionDocument.Load(Server.MapPath("~/Questions.xml"));
XmlNode unitQuestions = questionDocument.SelectSingleNode("//questions/Unit[@Name='Object Orientated Programming']");
// Clear the panel placeholder as it will create too many questions
panelQuestionsPlaceholder.Controls.Clear();
// Create variables needed to render the questions
Random rand = new Random();
// Controls for each question
Panel panelQuestion;
Label label;
RadioButtonList radioOptions;
RadioButton option;
XmlNode question;
int x;
// Get 5 questions for this unit
for (int i = 0; i < 5; i++)
{
if (Session["Unit2Questions"] == null)
{
// Get random question
x = rand.Next(1, unitQuestions.SelectNodes("Question[@Id]").Count + 1);
// if the list contains the question index - get new random index until it is unique
while (questionsGot.Contains(x))
{
x = rand.Next(1, unitQuestions.SelectNodes("Question[@Id]").Count + 1);
}
// add it to the list
questionsGot.Add(x);
question = unitQuestions.SelectSingleNode("Question[@Id='" + x + "']");
}
else
{
int[] iQuestionList = (int[])Session["Unit2Questions"];
question = unitQuestions.SelectSingleNode("Question[@Id='" + iQuestionList[i] + "']");
}
// instantiate the panel and add the controls to the panel
panelQuestion = new Panel();
string sQuestion = question.SelectSingleNode("Text").InnerText;
if (sQuestion.Contains("|"))
{
Image iImage;
string sData = sQuestion.Substring(sQuestion.IndexOf("|"));
string[] asData = sData.Split(' ');
string sDataType = asData[0];
string sDataValue = asData[1].Substring(0, asData[1].IndexOf("|"));
switch (sDataType.TrimStart('|'))
{
case "img":
iImage = new Image();
iImage.ImageUrl = "~/Images/" + sDataValue.Split('_')[0] + "/" + sDataValue.Split('_')[1] + ".png";
Label l = new Label();
l.CssClass = "SubHeaderText";
l.Text = (i + 1).ToString() + ". " + sQuestion.Substring(0, sQuestion.IndexOf("|"));
l.Text += "<br />";
panelQuestion.Controls.Add(l);
panelQuestion.Controls.Add(iImage);
l = new Label();
l.Text = "<br />" + sQuestion.Substring(sQuestion.LastIndexOf("|") + 1) + "<br />";
l.CssClass = "SubHeaderText";
panelQuestion.Controls.Add(l);
break;
}
}
else
{
label = new Label();
label.CssClass = "SubHeaderText";
label.Text = String.Format("{0}. {1}<br />", (i + 6), sQuestion);
panelQuestion.Controls.Add(label);
}
// create a radio button for each option
foreach (XmlElement ele in question.SelectSingleNode("Answers").ChildNodes)
{
option = new RadioButton();
option.Checked = false;
option.GroupName = "Unit1_" + question.Attributes["Id"].Value;
option.Text = ele.InnerText;
option.CheckedChanged += Option_CheckedChanged;
if (Session["Unit2Answers"] != null)
{
try
{
string[] asUserAnswers = (string[])Session["Unit2Answers"];
if (asUserAnswers.Length <= 0)
{
option.Checked = false;
}
if (ele.Name == asUserAnswers[i].ToLower())
{
option.Checked = true;
}
else
{
option.Checked = false;
}
}
catch (Exception ex)
{
// My Custom Exception Handler will let me know of the error so I can look into it
HandleException.WriteException(ex, Server.MapPath("~") + @"\ErrorLog.xml");
}
}
else
{
option.Checked = false;
}
option.AutoPostBack = false;
option.Attributes.Add("data-AnswerLetter", ele.Name);
panelQuestion.Controls.Add(option);
label = new Label();
label.Text = "<br />";
panelQuestion.Controls.Add(label);
}
// add spacer/line break
label = new Label();
label.Text = "<br /><br />";
panelQuestion.Controls.Add(label);
// add the created panel to the panel on the main page
panelQuestionsPlaceholder.Controls.Add(panelQuestion);
}
if (Session["Unit2Questions"] == null)
{
Session.Add("Unit2Questions", questionsGot.ToArray());
}
}