I have a XamOutlookBar where I want to set the initial width.
Also I have a splitter, where it would resize the columns and I want the ability
for the XamOutlookBar to be resized based on the splitter control.

Basically I have something like:

<Grid>
    <Grid.ColumnDefinitions>
       <ColumnDefinition Width="Auto"/>
       <ColumnDefinition Width="8"/>
       <ColumnDefinition Width="*"/>
    </Grid.ColumnDefinitions>

    <ig:XamOutlookBar Grid.Column="0"/>
   <controls:GridSplitter Grid.Column="1"/>
   <uc:MyUserControl Grid.Column="2"/>

 </Grid>

 How could I achieve this?