private void TextBoxKeyDown(KeyEventArgs e, ref KeySet set, ref string textBoxTextstr, ref TextBox text)
{
string str = KeyToString(e.Key);
set.List.Add(str);
SetTextAndTextboxText(ref set, ref textBoxTextstr, ref text);
}
private string SortedSettoString(KeySet set)
{
string str = "";
foreach (string s in set.List)
{
if (str == "")
{
str += s;
}
else
{
str += " + " + s;
}
}
return(str);
}