public void FindNext(string pattern)
{
try
{
RegexOptions opt = cbMatchCase.Checked ? RegexOptions.None : RegexOptions.IgnoreCase;
if (!cbRegex.Checked)
{
pattern = Regex.Escape(pattern);
}
if (cbWholeWord.Checked)
{
pattern = "\\b" + pattern + "\\b";
}
//
Range range = tb.Selection.Clone();
range.Normalize();
//
if (firstSearch)
{
startPlace = range.Start;
firstSearch = false;
}
//
range.Start = range.End;
if (range.Start >= startPlace)
{
range.End = new Place(tb.GetLineLength(tb.LinesCount - 1), tb.LinesCount - 1);
}
else
{
range.End = startPlace;
}
//
foreach (var r in range.GetRangesByLines(pattern, opt))
{
tb.Selection = r;
tb.DoSelectionVisible();
tb.Invalidate();
return;
}
//
if (range.Start >= startPlace && startPlace > Place.Empty)
{
tb.Selection.Start = new Place(0, 0);
FindNext(pattern);
return;
}
MessageBox.Show("已经到文本末尾！");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
/// <summary>
/// Expands range from first char of Start line to last char of End line
/// </summary>
public void Expand()
{
Normalize();
start = new Place(0, start.iLine);
end = new Place(tb.GetLineLength(end.iLine), end.iLine);
}