Region inside Flyout not working

[pedromontemor]

I have a region called "MenuRegion" that I want to add in a flyout. When I add this region inside MetroWindow.Content, that works fine, but inside FlyoutsControl or WindowCommands the RegionManager doesn't see my Region.

<mahapps:MetroWindow x:Class="SGD.Shell"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:cal="http://www.codeplex.com/prism" 
        xmlns:mahapps="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
        xmlns:local="clr-namespace:SGD"
        WindowStartupLocation="CenterScreen"
        GlowBrush="{DynamicResource AccentColorBrush}"
        Title="SGD" Height="600" Width="800">
    <mahapps:MetroWindow. Flyouts>
        <mahapps:FlyoutsControl>
            <mahapps:Flyout cal:RegionManager.RegionName="MenuRegion">

            </mahapps:Flyout>
        </mahapps:FlyoutsControl>
    </mahapps:MetroWindow.Flyouts>
    <mahapps:MetroWindow.Content>
        <mahapps:MetroContentControl>
            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="Auto"/>
                    <ColumnDefinition Width="*"/>
                </Grid.ColumnDefinitions>
                <StackPanel Grid.Column="0" Background="Transparent" Width="8" MouseEnter="StackPanel_MouseEnter" HorizontalAlignment="Left">
                </StackPanel>

                <ContentControl cal:RegionManager.RegionName="WorkspaceRegion" Grid.Column="0" Grid.ColumnSpan="2" Margin="8,0,0,0"></ContentControl>
            </Grid>
        </mahapps:MetroContentControl>
    </mahapps:MetroWindow.Content>
</mahapps:MetroWindow>

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MOD EDIT: @pedromontemor Please surround code in ```s. ~@Amrykid

[remcoros]

Hey, I haven't used Prism myself, but it may be related to this: http://compositewpf.codeplex.com/discussions/213048

In short: because the flyouts control doesn't have a logical parent the region manager isn't able to find it.

I don't have a solution for you, but maybe this points you in the right direction.

[glautrou]

Did you find a solution?

This is a workaround in your shell.xaml.cs file:
var regionManager = ServiceLocator.Current.GetInstance<IRegionManager>(); RegionManager.SetRegionManager(NameOfYourFlyoutControl, regionManager);

[furqansafdar]

Find the solution on these links:

• http://www.codeproject.com/Tips/1042780/MahApps-Metro-Flyouts-with-Prism-Library
• http://stackoverflow.com/questions/30474146/flyout-regionadapter-doesnt-use-slide-effect-for-the-first-time/33329178#33329178