private void DeleteCardBtn_Click(object sender, EventArgs e)
{
if (CountFlashcards() == 1)
{
MessageForm errorForm = new MessageForm("You cannot have an empty set.");
errorForm.Show();
}
else
{
Querey querey = new Querey();
using (querey.connection = querey.NewConn)
{
using (querey.command = querey.NewComm)
{
querey.command.CommandText = "DELETE FROM Flashcards WHERE Flashcards.Id = @flashId;";
querey.AddParameter("@flashId", currentCard.id);
querey.command.ExecuteNonQuery();
}
}
SaveChanges();
queue.Dequeue();
ChangeSetArray();
PointerVal.Text = queue.Backwards().ToString();
currentCard = queue.Load();
new MessageForm("deleted").Show();
}
}
private void BackwardsBtn_Click(object sender, EventArgs e)
{
currentCard.text1 = Text1.Text; // temporarily saves changes till user goes off set or goes onto the main menu
currentCard.text2 = Text2.Text;
PointerVal.Text = queue.Backwards().ToString();
currentCard = queue.Load(); // updating card displayed
}
private void NewCardBtn_Click(object sender, EventArgs e)
{
Querey querey = new Querey();
if (CountFlashcards() == 64)
{
MessageForm errorForm = new MessageForm("You already have the maximum numbers of cards in this set.");
errorForm.Show();
}
else
{
int flashId = 0;
using (querey.connection = querey.NewConn)
{
using (querey.command = querey.NewComm)
{
querey.command.CommandText = "INSERT INTO Flashcards (SetId, Text1, Text2) VALUES (@setId, @text1, @text2);";
querey.AddParameter("@setId", currentCard.setId);
querey.AddParameter("@text1", Text1.Text);
querey.AddParameter("@text2", Text2.Text);
querey.command.ExecuteNonQuery();
}
using (querey.command = querey.NewComm)
{
querey.command.CommandText = "SELECT Flashcards.Id FROM Flashcards WHERE SetId = @setId AND Text1 = @text1 AND Text2 = @text2;";
querey.AddParameter("@setId", currentCard.setId);
querey.AddParameter("@text1", Text1.Text);
querey.AddParameter("@text2", Text2.Text);
using (querey.reader = querey.command.ExecuteReader())
{
while (querey.reader.Read())
{
flashId = querey.reader.GetInt32(0);
}
}
}
}
SaveChanges();
new MessageForm("insertion successful").Show();
queue.Enqueue(new Flashcard(flashId, currentCard.setId, Text1.Text, Text2.Text));
PointerVal.Text = queue.Forwards().ToString();
currentCard = queue.Load();
ChangeSetArray();
}
}
public Set(int id, int ownerId, string setName, string title1, string title2)
{
_id = id;
_ownerId = ownerId;
_setName = setName;
_title1 = title1;
_title2 = title2;
_querey = new Querey();
_strengths = new double[] { 2.10, 3.48, 13.63, 59.16, 104.30, 153.92, 209.57, 313.04, 417.10, 521.39, 625.55 };
using (_querey.connection = _querey.NewConn)
{
using (_querey.command = _querey.NewComm)
{
_querey.command.CommandText = "SELECT count(SetId) FROM Flashcards WHERE SetId = @setid;";
_querey.AddParameter("@setid", _id);
int length = Convert.ToInt32(_querey.command.ExecuteScalar());
_flashcards = new Flashcard[length];
}
using (_querey.command = _querey.NewComm)
{
_querey.command.CommandText = "SELECT Flashcards.Id, Flashcards.Text1, Flashcards.Text2 FROM Flashcards, Sets WHERE Flashcards.SetId = Sets.Id AND Flashcards.SetId = @id;";
_querey.AddParameter("@id", id);
using (_querey.reader = _querey.command.ExecuteReader())
{
int i = 0;
while (_querey.reader.Read())
{
_flashcards[i] = new Flashcard(_querey.reader.GetInt32(0), id, _querey.reader.GetString(1), _querey.reader.GetString(2));
i++;
}
}
}
}
}
private void SelectSetBtn_Click(object sender, EventArgs e)
{
if (ChooseSet.Text == "")
{
MessageForm errorForm = new MessageForm("Please choose a set to edit");
}
else
{
for (int i = 0; i < _sets.Length; i++) // linear search
{
if (_sets[i].SetName == ChooseSet.Text)
{
currentSet = _sets[i];
queue = new PartialQueue(_sets[i], Text1, Text2);
Title1.Text = _sets[i].Title1;
Title2.Text = _sets[i].Title2;
currentCard = queue.Load();
break;
}
}
ChangeEdit(true);
PointerVal.Text = "1";
}
}
private void JumpBtn_Click(object sender, EventArgs e)
{
if (PointerInput.Text == "")
{
MessageForm errorForm = new MessageForm("Please enter which card you want to go to");
errorForm.Show();
}
else if (int.Parse(PointerInput.Text) < 0 || int.Parse(PointerInput.Text) > queue.GetQueue.Length)
{
MessageForm errorForm = new MessageForm("Please enter a value within the range of your flashcards");
errorForm.Show();
}
else if (queue.GetQueue[int.Parse(PointerInput.Text) - 1] == null)
{
MessageForm errorForm = new MessageForm("Your set does not have that many flashcards");
errorForm.Show();
}
else
{
int difference = int.Parse(PointerVal.Text) - int.Parse(PointerInput.Text);
bool back = false;
if (difference < 0)
{
difference = -difference;
back = true;
}
for (int i = 0; i < difference; i++)
{
PointerVal.Text = (back ? queue.Forwards() : queue.Backwards()).ToString();
}
currentCard = queue.Load();
}
PointerInput.Clear();
}
public void Enqueue(Flashcard flashcard) // error handling occurs earlier on in add procedure
{
_queue[_back] = flashcard;
_back++;
}