prism 自定义Region

1 按照《搭建prism项目》搭建prism项目

2 在项目中添加Adapters文件夹，添加类StackPanelRegionAdapter 

using Prism.Regions;
using System.Windows;
using System.Windows.Controls;

namespace Prism.Regions.Adapters
{
    public class StackPanelRegionAdapter : RegionAdapterBase<StackPanel>
    {
        public StackPanelRegionAdapter(IRegionBehaviorFactory regionBehaviorFactory)
            : base(regionBehaviorFactory)
        {

        }

        protected override void Adapt(IRegion region, StackPanel regionTarget)
        {
            region.Views.CollectionChanged += (s, e) =>
            {
                if (e.Action == System.Collections.Specialized.NotifyCollectionChangedAction.Add)
                {
                    foreach (FrameworkElement element in e.NewItems)
                    {
                        regionTarget.Children.Add(element);
                    }
                }

                //handle remove
            };
        }

        protected override IRegion CreateRegion()
        {
            return new AllActiveRegion();
        }
    }
}

3 在App的后台代码中重写ConfigureRegionAdapterMappings的方法

 protected override void ConfigureRegionAdapterMappings(RegionAdapterMappings regionAdapterMappings)
        {
            base.ConfigureRegionAdapterMappings(regionAdapterMappings);
            regionAdapterMappings.RegisterMapping(typeof(StackPanel), Container.Resolve<StackPanelRegionAdapter>());
        }

4 App代码如下

using Prism.Ioc;
using Prism.Regions.Adapters;
using Prism.Regions.Views;
using Prism.Unity;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;

namespace Prism.Regions
{
    /// <summary>
    /// App.xaml 的交互逻辑
    /// </summary>
    public partial class App : PrismApplication
    {
        protected override Window CreateShell()
        {
            return Container.Resolve<MainWindow>();
        }

        protected override void RegisterTypes(IContainerRegistry containerRegistry)
        {
            
        }

        protected override void ConfigureRegionAdapterMappings(RegionAdapterMappings regionAdapterMappings)
        {
            base.ConfigureRegionAdapterMappings(regionAdapterMappings);
            regionAdapterMappings.RegisterMapping(typeof(StackPanel), Container.Resolve<StackPanelRegionAdapter>());
        }
    }
}

5 在MainWindow.xaml中修改Region的定义 

<StackPanel prism:RegionManager.RegionName="ContentRegion" />

6 MainWindow.xaml代码如下

<Window x:Class="Prism.Regions.Views.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:Prism.Regions"
        xmlns:prism="http://prismlibrary.com/"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <StackPanel prism:RegionManager.RegionName="ContentRegion" />
    </Grid>
</Window>