Question

Is there a way to pop a usercontrol/control let say a Grid,ViewBox or custom control from a WPF application to fullscreen or to a modal window? And put it back to it’s orginal place when you press esc.

A Scenario could be that you have a WPF application consisting of a grid with two columns. Where the first shows a image preview and the second one shows list of images. When you double click the image preview it pops to fullscreen or as a modal dialog.

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

  <Image Content="Left" Grid.Column="0" />

  <GridSplitter HorizontalAlignment="Right" 
              VerticalAlignment="Stretch" 
              Grid.Column="1" Width="5">

  <ListBox Content="Right" Grid.Column="2" />
</Grid>

I have scouted the www for a answer without any success.
Any Ideas or examples or links would be appreciated.

Answer 1

A Popup that covers more than 75 percent of the screen, reduces its width first
     and then its height to meet the maximum coverage limit of 75 percent.

You cannot cover full screen as explained by MSDN here. Maximum a pop up dialog can cover 75% of the full screen