private void Prev_Executed(object sender, ExecutedRoutedEventArgs e)
{
PdfSearchItem next = null;
TreeViewItem node = null;
var current = trvResult?.SelectedItem;
if (current is TreeViewItem)
{
node = GetPrev(current as TreeViewItem);
next = node.Items[node.Items.Count - 1] as PdfSearchItem;
}
else if (current is PdfSearchItem)
{
var item = current as PdfSearchItem;
var father = item.Father;
var id = father.IndexOf(item);
var t = trvResult.ItemContainerGenerator.Items.First(n =>
(n as TreeViewItem)?.ItemsSource == father) as TreeViewItem;
if (id > 0)
{
next = father[id - 1] as PdfSearchItem;
node = t;
}
else
{
node = GetPrev(t);
next = node?.Items[node.Items.Count - 1] as PdfSearchItem;
}
}
((Control)node.ItemContainerGenerator.ContainerFromItem(next))?.Focus();
}
private async void trvResult_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs <object> e)
{
try
{
Debug.WriteLine(e.NewValue);
PdfSearchItem pdf = e.NewValue as PdfSearchItem;
if (pdf == null)
{
return;
}
try
{
await LoadPdf(pdf.PdfFile);
}
catch (Exception ex)
{
Debug.Fail(ex.ToString());
}
}
catch (Exception ex)
{
Trace.Fail(ex.ToString());
}
}