Property

Name
IsMaximizable
IsMinimizable
IsAlwaysOnTop
IsResizable
HasTitleBar
TitleBarHeightOption

<Window>
    <Grid>
        <Grid.RowDefenitions>
            <RowDefenitions/>
            <RowDefenitions/>
        </Grid.RowDefenitions>

        <TitleBar IsMaximizable="False"/>
    </Grid>
</Window>

Demo

you can run demo and see this feature.