How can I prevent the grid splitter from resizing a column outside of the window bounds?

I have the XAML shown below (for example). If you drag the grid splitter as far as it goes to the left, and keep dragging the mouse, the right-hand column will grow in size outside the bounds of the window - obviously not what I want.

The problem is that I can't set a hard MaxWidth on the right-hand column because the user can resize the window, thus increasing the available space for that col开发者_如何学Pythonumn. So far I think I need to bind the MaxWidth of the right-hand column to something like the window's client area minus the MinWidth of the left plus the width of the splitter column. But I'd like to avoid that if possible. Thoughts?

<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Width="450"
        Height="300">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*" MinWidth="100" />
            <ColumnDefinition Width="Auto" />
            <ColumnDefinition Width="200" MinWidth="200" />
        </Grid.ColumnDefinitions>

        <Grid Grid.Column="0">
            <Button>Monkey</Button>
        </Grid>

        <GridSplitter Grid.Column="1" Width="7" ResizeBehavior="PreviousAndNext" />

        <Grid Grid.Column="2" Margin="4">
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto" />
                <RowDefinition Height="Auto" />
            </Grid.RowDefinitions>

            <GroupBox Grid.Row="0" Header="Spaghetti" Margin="0, 0, 0, 5">
                <ComboBox HorizontalAlignment="Stretch" VerticalAlignment="Stretch">Noodles</ComboBox>
            </GroupBox>

            <Expander Grid.Row="1" Header="Batman" IsExpanded="True" Margin="0, 0, 0, 5">
                <Button HorizontalAlignment="Stretch" VerticalAlignment="Stretch">Batman!</Button>
            </Expander>
        </Grid>
    </Grid>
</Window>

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I'm having the same problem. Maybe this will be a partial answer. I bound the MaxWidth of the column I'm expanding to the ActualWidth of its grid. The goal being that the splitter never exceed the size of its grid. The binding works correctly but it's not achieving the goal because once my grid splitter gets to the edge of the grid, the grid starts resizing larger as I drag the splitter. If we can make the grid not resize with the splitter, this should work.