prismRegionContext（区域上下文）

1 按照《prism项目搭建》搭建prism项目

2 新建用户控件库ModuleA&＃xff0c;并为其创建Views&＃xff0c;ViewModels&＃xff0c;Model目录

3 在Model里面新建类

using Prism.Mvvm;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace ModuleA.Model
{public class Person:BindableBase{private string _firstName;public string FirstName{get { return _firstName; }set{_firstName &＃61; value;SetProperty(ref _firstName, value);}}private string _lastName;public string LastName{get { return _lastName; }set{_lastName &＃61; value;SetProperty(ref _lastName, value);}}private int _age;public int Age{get { return _age; }set{_age &＃61; value;SetProperty(ref _age, value);}}public override string ToString(){return String.Format("{0}, {1}", LastName, FirstName);}}
}


4 在Views里面创建PersonListView&＃xff0c;PersonDetailView用户控件&＃xff0c;在PersonListView定义Region的同时&＃xff0c;将RegionContext绑定到ListBox的SelectedItem属性

5 在ViewModels目录里面新建PersonListViewModel&＃xff0c;PersonDetailViewModel

using ModuleA.Model;
using Prism.Mvvm;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace ModuleA.ViewModels
{public class PersonListViewModel:BindableBase{private ObservableCollection _lstPerson &＃61; new ObservableCollection();public ObservableCollection LstPerson{get { return _lstPerson; }set { SetProperty(ref _lstPerson, value); }}public PersonListViewModel(){for (int i &＃61; 0; i <10; i&＃43;&＃43;){_lstPerson.Add(new Person(){FirstName &＃61; String.Format("First {0}", i),LastName &＃61; String.Format("Last {0}", i),Age &＃61; i});}}}
}


using ModuleA.Model;
using Prism.Mvvm;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace ModuleA.ViewModels
{public class PersonDetailViewModel:BindableBase{private Person _selectedPerson &＃61; new Person();public Person SelectedPerson{get { return _selectedPerson; }set { SetProperty(ref _selectedPerson, value); }}}
}


7 在ModuleA中新建类ModuleAEntity&＃xff0c;并将View注册到对应的Region

using ModuleA.Views;
using Prism.Ioc;
using Prism.Modularity;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace ModuleA
{public class ModuleAEntity : IModule{public void OnInitialized(IContainerProvider containerProvider){var regionManager &＃61; containerProvider.Resolve();regionManager.RegisterViewWithRegion("ContentRegion", typeof(PersonListView));regionManager.RegisterViewWithRegion("DetailRegion", typeof(PersonDetailView));}public void RegisterTypes(IContainerRegistry containerRegistry){}}
}


8 在App里面添加Module

protected override void ConfigureModuleCatalog(IModuleCatalog moduleCatalog){moduleCatalog.AddModule();}

9 此时运行发现选定LstBox的项时&＃xff0c;DetailView没有变化

10 此时需要修改PersonDetailView代码&＃xff0c;监控DataContext的变化

using ModuleA.Model;
using ModuleA.ViewModels;
using Prism.Common;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;namespace ModuleA.Views
{///

11 运行