【WPF系列】-TextBox常用点

<Style x:Key="LayoutRoot" TargetType="Grid">
        <Style.Triggers>
            <!--these are the triggers that make the code cursor jump from box 1 to box 2 to box 3.-->
            <DataTrigger Binding="{Binding ElementName=CodeDigit1, Path=Text.Length}" Value="1">
                <Setter Property="FocusManager.FocusedElement" Value="{Binding ElementName=CodeDigit2}"/>
            </DataTrigger>
            <DataTrigger Binding="{Binding ElementName=CodeDigit2, Path=Text.Length}" Value="1">
                <Setter Property="FocusManager.FocusedElement" Value="{Binding ElementName=CodeDigit3}"/>
            </DataTrigger>
            <DataTrigger Binding="{Binding ElementName=CodeDigit3, Path=Text.Length}" Value="1">
                <Setter Property="FocusManager.FocusedElement" Value="{Binding ElementName=CodeDigit4}"/>
            </DataTrigger>
            <DataTrigger Binding="{Binding ElementName=CodeDigit4, Path=Text.Length}" Value="1">
                <Setter Property="FocusManager.FocusedElement" Value="{Binding ElementName=ConnectButton}"/>
            </DataTrigger>
        </Style.Triggers>
    </Style>