void TimedFilter(ObjectListView olv, string txt, int matchKind) {
TextMatchFilter filter = null;
if (!String.IsNullOrEmpty(txt)) {
switch (matchKind) {
case 0:
default:
filter = TextMatchFilter.Contains(olv, txt);
break;
case 1:
filter = TextMatchFilter.Prefix(olv, txt);
break;
case 2:
filter = TextMatchFilter.Regex(olv, txt);
break;
}
}
// Setup a default renderer to draw the filter matches
if (filter == null) {
olv.DefaultRenderer = null;
} else {
olv.DefaultRenderer = new HighlightTextRenderer(filter);
// Uncomment this line to see how the GDI+ rendering looks
//olv.DefaultRenderer = new HighlightTextRenderer { Filter = filter, UseGdiTextRendering = false };
}
// Some lists have renderers already installed
HighlightTextRenderer highlightingRenderer = olv.GetColumn(0).Renderer as HighlightTextRenderer;
if (highlightingRenderer != null) {
highlightingRenderer.Filter = filter;
}
Stopwatch stopWatch = new Stopwatch();
stopWatch.Start();
olv.AdditionalFilter = filter;
olv.Invalidate();
stopWatch.Stop();
IList objects = olv.Objects as IList;
if (objects == null) {
string msg = String.Format("Filtered in {0}ms", stopWatch.ElapsedMilliseconds);
this.toolTip1.SetToolTip(this.textBoxFilterTree, msg);
} else {
string msg = String.Format("Filtered {0} items down to {1} items in {2}ms",
objects.Count,
olv.Items.Count,
stopWatch.ElapsedMilliseconds);
this.toolTip1.SetToolTip(this.textBoxFilterTree, msg);
}
}
