#643 – Disabled Controls Cannot Get Focus

When a control is disabled, i.e. its IsEnabled property is set to false, the user cannot give the control keyboard focus by clicking on it.  The control also cannot gain focus by use of the tab key.  Disabled controls cannot get focus, even if both their Focusable and IsTabStop properties are set to true.

    <StackPanel Orientation="Vertical">
        <StackPanel Orientation="Horizontal">
            <TextBox Text="IsEnabled=true" IsEnabled="True" Width="140" Margin="10"/>
            <TextBox Text="IsEnabled=false" IsEnabled="False" Width="140" Margin="10"/>
        </StackPanel>
        <StackPanel Orientation="Horizontal">
            <Button Content="IsEnabled=true" IsEnabled="True" Margin="10"/>
            <Button Content="IsEnabled=false" IsEnabled="False" Margin="10"/>
        </StackPanel>
        <StackPanel Orientation="Horizontal">
            <ComboBox IsEnabled="True" Margin="10" SelectedIndex="0">
                <ComboBoxItem Content="McClellan"/>
                <ComboBoxItem Content="Hooker"/>
                <ComboBoxItem Content="Meade"/>
            </ComboBox>
            <ComboBox IsEnabled="False" Margin="10" SelectedIndex="0">
                <ComboBoxItem Content="McClellan"/>
                <ComboBoxItem Content="Hooker"/>
                <ComboBoxItem Content="Meade"/>
            </ComboBox>
        </StackPanel>
        <StackPanel Orientation="Horizontal">
            <Label Content="IsEnabled=true" IsEnabled="True" Margin="10"/>
            <Label Content="IsEnabled=false" IsEnabled="False" Margin="10"/>
        </StackPanel>
    </StackPanel>