C#/WPF: KeyBinding not triggering Command

Question

I have declared <InputBindings>

<UserControl.InputBindings>
    <KeyBinding Key="C" Modifiers="Ctrl" Command="{Binding CopyImageCommand}" />
    <KeyBinding Key="V" Modifiers="Ctrl" Command="{Binding PasteImageCommand}" />
</UserControl.InputBindings>

For testing purposes, I have added buttons bound to those commands too

<Button Command="{Binding CopyImageCommand}" Content="Copy" />
<Button Command="{Binding PasteImageCommand}" Content="Paste" />

I noticed that when the paste button is enabled, when i press Ctrl-V nothing happens. Ctrl-C seems to work. For that, a list box item is selected, I am not sure if it makes any difference. Anyone knows why is my PasteImageCommand not triggering?

I am using .NET 4 btw

UPDATE

A fuller code snipplet

<UserControl x:Class="QuickImageUpload.Views.ShellView"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:vm="clr-namespace:QuickImageUpload.ViewModels"
             mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300">
    <UserControl.InputBindings>
        <KeyBinding Key="C" Modifiers="Ctrl" Command="{Binding CopyImageCommand}" />
        <KeyBinding Key="V" Modifiers="Ctrl" Command="{Binding PasteImageCommand}" />
    </UserControl.InputBindings>
    <UserControl.DataContext>
        <vm:ShellViewModel />
    </UserControl.DataContext>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="50" />
            <RowDefinition Height="*" />

UPDATE

I found out I need to put the KeyBindings in the MainWindow, but the commands are in the ViewModel, how can i set key bindings in the ShellView which then binds to commands in the ShellViewModel?

Answer 1

Are you using 3.5 or 4?

In 3.5 its "feature". UserControl.InputBindings is not part of dataContext tree so you cannot bind to items of class, that is bound to parent. eg. DataBinding wont work and you need to set DataBinding or whole KeyBinding in code by hand.

Its fixed in 4.