public void AddPurchase(string id, int issue, string purchased)
{
if (HasPurchase(id, issue, purchased))
{
return;
}
Purchased newIssue = new Purchased();
newIssue.id = id;
newIssue.issue = issue;
newIssue.transactionDate = purchased;
Purchased.Add(newIssue);
}
public void SortByDate()
{
// This is a stable sort.
// http://www.csharp411.com/c-stable-sort/
int count = Shared._PURCHASED.Purchased.Count;
for (int j = 1; j < count; j++)
{
Purchased key = Purchased[j];
int i = j - 1;
for (; i >= 0 && Purchased[i].transactionDate.CompareTo(key.transactionDate) > 0; i--)
{
Purchased[i + 1] = Purchased[i];
}
Purchased[i + 1] = key;
}
Purchased.Reverse();
}
