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POIn WPF how do you detect a key press/down event at any point
 

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  1. POIn WPF how do you detect a key press/down event at any point
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    <p>In WPF is it possible to trigger an event if say the keyboard right or left directions are pressed, now matter which control has focus?</p> <p>No matter where in the form has focus or what they are doing I need something to happen if Right Or Left is hit.</p> <p>Is it absolutely necessary to track down every keyboard notification (KeyDown and KeyUp events)?</p> <p><strong>Edit:</strong> </p> <p>For more info, I have a slider that I need to be controlled by left and right buttons at any time. I also have a combobox that I need to open. I tried using this code, but it stops me from using the combobox:</p> <pre><code>Private Sub sldDays_IsKeyboardFocusedChanged(sender As Object, e As System.Windows.DependencyPropertyChangedEventArgs) Handles sldDays.IsKeyboardFocusedChanged Keyboard.Focus(sldDays) End Sub </code></pre> <p><strong>Edit 2:</strong></p> <p>In case anyone stumbles on this in the future I think I solved my issue:</p> <p>I set this method to the PreviewKeyDown Event (this makes it always go first as the key down)</p> <pre><code>&lt;Window x:Class="MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" PreviewKeyDown="sliderKey" </code></pre> <p>Then this is the event:</p> <pre><code>Private Sub sliderKey(sender As System.Object, e As KeyEventArgs) Try If e.Key = Key.Right Then sldDays.Value += 1 ElseIf e.Key = Key.Left Then sldDays.Value -= 1 End If Catch ex As Exception MessageBox.Show(ex.Message) End Try End Sub </code></pre>
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    1. PTQuestion
    1. USLoogawa
    1. USLoogawa
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    1. COhttp://stackoverflow.com/questions/1752494/detect-if-any-key-is-pressed-in-c-sharp-not-a-b-but-any Look this answer
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    2. COThis doesn't fix my problem because I do have controls on the form that can have key down events and stuff like that. I need regardless of which control has focus the key down to be intercepted.
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      1. USLoogawa
 

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