Question

i have a basic grid in my WPF application:

<Grid>
    <Grid Height="260" HorizontalAlignment="Left" Margin="24,25,0,0" Name="grid1" VerticalAlignment="Top" Width="452">
        <Border BorderBrush="Red" BorderThickness="6"></Border>  
    </Grid>
</Grid>

the grid is in the middle of the window.
When i maximize the window i want the grid to auto resize itself to the size of the window and stay with the same margin that i specified.

How do i do that ?
Do i have to calculate and resize the whole thing in the resize event?

i get from this:

to This (i dont want this):

i want the grid to resize to the same portions as it was , but for a full screen.

Answer 1

Remove Width and Height.

<Grid>
    <Grid Margin="24,25">
        <Border BorderBrush="Red" BorderThickness="6"></Border>  
    </Grid>
</Grid>

e: Added a second grid to make it identical to OP