WPF: How to relayout wrappanel?

Question

I have a WrapPanel placed in a grid and fill it dynamically with ToggleButtons.
The height of the row, where the wrappanel is located in, is calculated based on the number of ToggleButtons in the WrapPanel component.

When I load my screen the items in the wrappanel aren't layouted correctly. However when I resize my form the items are shown correctly.

Is there a method where you can force to relayout the items like it does when you resize your form ?

Below you can see my WPF code:

<Grid x:Name="grdScreen">
    <Grid.RowDefinitions>
        <RowDefinition x:Name="rdToolBar" Height="21" />
        <RowDefinition />
    </Grid.RowDefinitions>
    <Grid Grid.Row="0">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="150" />
            <ColumnDefinition Width="150" />
            <ColumnDefinition />
        </Grid.ColumnDefinitions>
        <ToggleButton Grid.Column="0" Name="btnlegende" Margin="1,1,11,1" Click="btnlegende_Click" />
        <Button Grid.Column="1" Name="btnlayout" Margin="1" Click="btnlayout_Click" />
        <WrapPanel x:Name="pnlHeader" Grid.Column="2" />
    </Grid>
...
</Grid>

score 0 · Accepted Answer · answered Jun 25 '10 at 09:06

0

try this.UpdateLayout();

answered Jun 25 '10 at 09:06

Ragunathan

2,007
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I tried it already. Even pnlHeader.upateLayout(). It doesn't work. – user376040 Jun 25 '10 at 09:36
Just try putting the Wrap panel code seperately in a usercontrol, i mean not inside the Grid. – Ragunathan Jun 25 '10 at 11:56
I replaced the grid by a StackPanel and it seems to work now. – user376040 Jun 25 '10 at 15:51

score 0 · Answer 2 · answered Jun 25 '10 at 10:42

0

You can call InvalidateArrange() or InvalidateMeasure() to force WPF to redo the appropriate layout phase.

answered Jun 25 '10 at 10:42

Quartermeister

57,579
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WPF: How to relayout wrappanel?

2 Answers2