private void generateQuestions()
{
Random random = new Random();
lstQuestions.Clear();
//calls a random number and gets the description from the tree
while (lstQuestions.Count != 10)
{
DeweyObject question = new DeweyObject();
int callNumber = random.Next(0, 940);
if (!(callNumber % 10 == 0))
{
//Checks if the question exists using tree search
question = deweyDecimalsTree.searchLvl3(callNumber);
if ((question != null) && (!lstQuestions.Contains(question)))
{
lstQuestions.Add(question);
}
}
}
currentQuestion = 0;
treeLevel = 1;
populateAnswers();
}
private void populateTreeFromFile()
{
//Creates the beginning of the tree list
deweyDecimalsTree.Root = new TreeNode()
{
};
deweyDecimalsTree.Root.Children = new List <TreeNode>();
using (StreamReader reader = new StreamReader("CallNumbers.txt"))
{
string line;
while ((line = reader.ReadLine()) != null)
{
DeweyObject deweyObject = new DeweyObject();
deweyObject.callNumbers = Convert.ToInt32(line.Substring(0, 3));
deweyObject.description = line.Substring(6);
int mainLevelIndex = Convert.ToInt32(line.Substring(0, 1));
int secondLevelIndex = Convert.ToInt32(line.Substring(1, 1));
if (deweyObject.callNumbers < 10)
{
mainLevelIndex = 0;
secondLevelIndex = 0;
}
else if (deweyObject.callNumbers < 100)
{
mainLevelIndex = 0;
}
//Checks if number is from main dewey level (hundreds)
if (line.Substring(1, 2).Equals("00"))
{
deweyDecimalsTree.Root.Children.Add(new TreeNode()
{
Data = deweyObject, Parent = deweyDecimalsTree.Root
});
deweyDecimalsTree.Root.Children[mainLevelIndex].Children = new List <TreeNode>();
//Creates category for values less than 010
deweyDecimalsTree.Root.Children[mainLevelIndex].Children.Add(new TreeNode()
{
Data = deweyObject, Parent = deweyDecimalsTree.Root.Children[mainLevelIndex]
});
deweyDecimalsTree.Root.Children[mainLevelIndex].Children[secondLevelIndex].Children = new List <TreeNode>();
}
//Checks if number is from second dewey level (tens)
else if (line.Substring(2, 1).Equals("0"))
{
deweyDecimalsTree.Root.Children[mainLevelIndex].Children.Add(new TreeNode()
{
Data = deweyObject, Parent = deweyDecimalsTree.Root.Children[mainLevelIndex]
});
deweyDecimalsTree.Root.Children[mainLevelIndex].Children[secondLevelIndex].Children = new List <TreeNode>();
}
else
{
//Adds 3rd level value
deweyDecimalsTree.Root.Children[mainLevelIndex].Children[secondLevelIndex].Children.Add(new TreeNode()
{
Data = deweyObject, Parent = deweyDecimalsTree.Root.Children[mainLevelIndex].Children[secondLevelIndex]
});
}
}
}
}
private void populateAnswers()
{
callDescriptions.Clear();
if (currentQuestion >= 0 && currentQuestion <= 10)
{
txtQuestion.Text = lstQuestions[currentQuestion].description;
switch (treeLevel)
{
case 1:
Level1Categories lvl1 = new Level1Categories();
Dictionary <string, string> categories = lvl1.level1Numbers;
//Determines correct category from tree search
string questionCategory = lstQuestions[currentQuestion].callNumbers.ToString().Substring(0, 1);
if (lstQuestions[currentQuestion].callNumbers.ToString().Length.Equals(1) || lstQuestions[currentQuestion].callNumbers.ToString().Length.Equals(2))
{
questionCategory = "0";
}
callDescriptions.Add(deweyDecimalsTree.Root.Children[Convert.ToInt32(questionCategory)].Data.callNumberDesc());
Random random = new Random();
//Adds 3 incorrect answers
while (callDescriptions.Count != 4)
{
int r = random.Next(10);
string descr = categories.ElementAt(r).Key + " - " + categories.ElementAt(r).Value;
if (!callDescriptions.Contains(descr))
{
callDescriptions.Add(descr);
}
}
callDescriptions.Sort();
//Sorts answers & Populates answer buttons
for (int i = 0; i < callDescriptions.Count; i++)
{
Button btnAnswer = panelLvl1.Controls.Find("btnLevel1_" + (i + 1), false).FirstOrDefault() as Button;
btnAnswer.Text = callDescriptions[i];
}
break;
case 2:
callDescriptions.Clear();
int level2Category = Convert.ToInt32(lstQuestions[currentQuestion].callNumbers.ToString().Substring(0, 2) + "0");
if (lstQuestions[currentQuestion].callNumbers.ToString().Length.Equals(1))
{
level2Category = 0;
}
else if (lstQuestions[currentQuestion].callNumbers.ToString().Length.Equals(2))
{
level2Category = Convert.ToInt32(lstQuestions[currentQuestion].callNumbers.ToString().Substring(0, 2));
}
//Adds correct answer
callDescriptions.Add(deweyDecimalsTree.searchLvl2(level2Category).callNumberDesc());
Random randomL2 = new Random();
int randomStart = Convert.ToInt32(level2Category.ToString().Substring(0, 1) + "0");
while (callDescriptions.Count != 4)
{
int r = randomL2.Next(randomStart, randomStart + 9) * 10;
DeweyObject obj = deweyDecimalsTree.searchLvl2(r);
if (obj != null)
{
string descript = obj.callNumberDesc();
if (!callDescriptions.Contains(descript))
{
callDescriptions.Add(descript);
}
;
}
}
//Sorts answers & Populates answer buttons
callDescriptions.Sort();
for (int i = 0; i < callDescriptions.Count; i++)
{
Button btnAnswer = panelLvl2.Controls.Find("btnLevel2_" + (i + 1), false).FirstOrDefault() as Button;
btnAnswer.Text = callDescriptions[i];
}
panelLvl2.Visible = true;
break;
case 3:
callDescriptions.Clear();
callDescriptions.Add(lstQuestions[currentQuestion].callNumberDesc());
Random randomLvl3 = new Random();
int randStart = Convert.ToInt32(lstQuestions[currentQuestion].callNumberDesc().Substring(0, 2) + "0");
int randEnd = Convert.ToInt32(lstQuestions[currentQuestion].callNumberDesc().Substring(0, 2) + "9");
while (callDescriptions.Count != 4)
{
int z = randomLvl3.Next(randStart, randEnd);
DeweyObject obj = deweyDecimalsTree.searchLvl3(z);
if (obj != null)
{
string descript = obj.callNumberDesc();
if (!callDescriptions.Contains(descript))
{
callDescriptions.Add(descript);
}
}
}
//Sorts answers & populates answer buttons
callDescriptions.Sort();
for (int i = 0; i < callDescriptions.Count; i++)
{
Button btnAnswer = panelLvl3.Controls.Find("btnLevel3_" + (i + 1), false).FirstOrDefault() as Button;
btnAnswer.Text = callDescriptions[i];
}
panelLvl3.Visible = true;
break;
}
}
}