WPF Persistency

<Window x:Class="WpfPersist.Demo.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:app="clr-namespace:WpfPersist"
        Title="WpfPersist.Demo"
        Height="{app:UserSettings Default=300}" Width="{app:UserSettings Default=400}"
        Top="{app:UserSettings}" Left="{app:UserSettings}"
        >
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="{app:UserSettings Default=100}" />
            <ColumnDefinition />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition />
        </Grid.RowDefinitions>

        <StackPanel Grid.Column="0" Grid.Row="0" Background="AliceBlue">
            <GroupBox Margin="4" Header="TextBox">
                <TextBox Margin="4" Text="{app:UserSettings default text}" />
            </GroupBox>
            <GroupBox Margin="4" Header="CheckBox">
                <StackPanel>
                    <CheckBox Margin="4" IsChecked="{app:UserSettings}">Check1</CheckBox>
                    <CheckBox Margin="4" IsChecked="{app:UserSettings}">Check2</CheckBox>
                </StackPanel>
            </GroupBox>
            <GroupBox Margin="4" Header="RadioButton">
                <StackPanel>
                    <RadioButton Margin="4" IsChecked="{app:UserSettings Default='True'}">Radio1</RadioButton>
                    <RadioButton Margin="4" IsChecked="{app:UserSettings Default='False'}">Radio2</RadioButton>
                </StackPanel>
            </GroupBox>
        </StackPanel>

        <GridSplitter ResizeBehavior="CurrentAndNext" Width="2" ResizeDirection="Columns" VerticalAlignment="Stretch" HorizontalContentAlignment="Right" />

        <DockPanel Grid.Column="1" Grid.Row="0" >
            <TextBox Margin="4" DockPanel.Dock="Bottom" Name="tbLocalPath" IsReadOnly="True" Text="{Binding Path='ExeLocalConfigPath', Mode='OneTime'}" />
            <ListView Name="lvProcesses">
                <ListView.View>
                    <GridView >
                        <GridViewColumn
                          DisplayMemberBinding="{Binding Mode=OneTime,Path=ProcessName}"
                          Header="ProcessName"
                          Width="{app:UserSettings Default=100, Key=Window1.ListView0.Col0.Width }" />
                        <GridViewColumn
                          DisplayMemberBinding="{Binding Mode=OneTime,Path=Id}"
                          Header="Id"
                          Width="{app:UserSettings Default=100, Key=Window1.ListView0.Col1.Width}" />
                        <GridViewColumn
                          DisplayMemberBinding="{Binding Mode=OneTime,Path=MainWindowTitle}"
                          Header="MainWindowTitle"
                          Width="{app:UserSettings Default=Auto, Key=Window1.ListView0.Col2.Width}" />
                    </GridView>
                </ListView.View>
            </ListView>
        </DockPanel>
    </Grid>
</Window>