// Editbox wordwheel
private void indexTextBox_TextChanged(object sender, EventArgs e) //type kwText, word wheel down to the matching kwText
{
int iSelected = -1;
if (indexListView.SelectedIndices.Count > 0)
{
iSelected = indexListView.SelectedIndices[0];
}
String text = indexTextBox.Text.Trim();
if (_helpKeywords != null && _helpKeywords.Count > 0)
{
int i = 0;
if (!String.IsNullOrEmpty(text))
{
i = _helpKeywords.MoveToKeyword(text);
}
if (i >= 0 && i <= _helpKeywords.Count && i != iSelected)
{
//Select and scroll match into view
indexListView.BeginUpdate(); /// This keeps selection traffic to a min
try
{
indexListView.SelectedIndices.Clear();
indexListView.SelectedIndices.Add(i);
indexListView.Items[i].EnsureVisible();
indexListView.TopItem = indexListView.Items[i];
}
finally
{
indexListView.EndUpdate();
}
}
}
}
private void SearchForText()
{
int iSelected = -1;
if (keywordsListView.SelectedIndices.Count > 0)
{
iSelected = keywordsListView.SelectedIndices[0];
}
String text = searchTextBox.Text.Trim();
if (_helpKeywords != null && _helpKeywords.Count > 0)
{
int i = 0;
if (!String.IsNullOrEmpty(text))
{
i = _helpKeywords.MoveToKeyword(text);
}
if (i >= 0 && i <= _helpKeywords.Count && i != iSelected)
{
//Select and scroll match into view
keywordsListView.BeginUpdate(); /// This is really important on a Virtual List as we are doing several list changes. Will crash without it.
try
{
keywordsListView.SelectedIndices.Clear();
keywordsListView.SelectedIndices.Add(i);
keywordsListView.Items[i].EnsureVisible();
keywordsListView.TopItem = keywordsListView.Items[i];
}
finally
{
keywordsListView.EndUpdate();
}
}
}
}