Prism WPF Dynamic Regions

Question

Let's say we have a Prism 7 application with modules A and B. The main window has a Tab Control and two buttons, which add either module A or B to the Tab Control. I created a binding for the Tab Control items and implemented an item template, which includes Prism Region, whose name is bound to the item name.

<TabControl ItemsSource="{Binding Tabs}">
        <TabControl.ItemTemplate>
            <DataTemplate>
                <TextBlock Text="{Binding}"/>
            </DataTemplate>
        </TabControl.ItemTemplate>
            
        <TabControl.ContentTemplate>
            <DataTemplate>
                <ContentControl prism:RegionManager.RegionName="{Binding}" />
            </DataTemplate>
        </TabControl.ContentTemplate>
    </TabControl>

The problem I am facing is that the region name doesn't seem to change, i.e. if I first add Module A, all the next button clicks will add Module A and vice versa. In my previous question Prism WPF Binding RegionManager.RegionName I was explained that I shouldn't bind the RegionManger.RegionName, so my question is, how should I implement the requirements?

Link to the repo: https://github.com/moisejbraver/ModulesTest

You should just assign a region to the tabcontrol, and register all your tabs to the same region. — Athul Raj

Athul Raj Athul Raj · Accepted Answer · 2020-09-29T08:13:17

This is the way i handle tab controls with prism regions, i think this is helpful for you too.

<TabControl prism:RegionManager.RegionName="{x:Static local:RegionNames.AdvancedSetup}">
    <TabControl.ItemContainerStyle>
        <Style TargetType="TabItem">
            <Setter Property="Visibility" Value="{Binding DataContext.IsAvailable, Converter={coverters:BooleanToVisibilityConverter}}"/>
            <Setter Property="Header" Value="{Binding DataContext.Name}"/>
        </Style>
    </TabControl.ItemContainerStyle>
</TabControl>

Then i register all my tabs to the same region in OnInitialized function of each module.

regionManager.RegisterViewWithRegion(RegionNames.AdvancedSetup, setupType);

I've made an interface which all viewmodels of tabs will implement, it contains

Name of the tab
Whether the tab is visible.

You may need to change some details based on your need.

Prism WPF Dynamic Regions

1 Answers