WPF ListView focus problem.

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Hi everyone!

I have some strange behavior of ListView control in WPF.

We are developing application in C#.

I created ListView with some items and set SelectedIndex to some index in
the middle of its list. Then I clicked mouse at any place on the ListView and
then navigate with Up/Dows keyboard keys, everything works perfectly. But If
I move focus to another control and then tries to set focus back to ListView
control programmatically, then I'm getting the problem.

The ListView gets the focus, but when I’m trying to navigate with the
keyboard, current selection will be canceled and the first item will be
selected and navigation will start from the first item in list.

I'm setting focus to ListView control by calling to its .Focus() method.

It looks like even ListView control in focus, but no items actually in
focus, even if SelectedIndex has some valid values.

Please, help me! How can I set focus to ListView control programmatically to
prevent such behavior?

Thanks!

Igor.