50 lines
1.6 KiB
C#
50 lines
1.6 KiB
C#
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using CommonServiceLocator;
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using GalaSoft.MvvmLight;
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using GalaSoft.MvvmLight.Ioc;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace StandardDesign.ViewModels
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{
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public class ViewModelLocator
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{
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public ViewModelLocator()
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{
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//管理对象的生命周期
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ServiceLocator.SetLocatorProvider(() => SimpleIoc.Default);
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//注册ioc容器
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SimpleIoc.Default.Register<LoginViewModel>();
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SimpleIoc.Default.Register<MainViewModel>();
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// SimpleIoc.Default.Register<ILoacalDataAccess, LoacalDataAccess>();
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}
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// 这种属性定义方式会有歧义，感觉好像定义的字段
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public LoginViewModel LoginViewModel => ServiceLocator.Current.GetInstance<LoginViewModel>();
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public MainViewModel MainViewModel => ServiceLocator.Current.GetInstance<MainViewModel>();
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/// <summary>
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/// 通过ViewModelLocator对象实例 进行对应的VM对象的销毁
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/// </summary>
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/// <typeparam name="T"></typeparam>
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public static void Cleanup<T>() where T : ViewModelBase
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{
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if (SimpleIoc.Default.IsRegistered<T>() && SimpleIoc.Default.ContainsCreated<T>())
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{
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var instances = SimpleIoc.Default.GetAllCreatedInstances<T>();
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foreach (var instance in instances)
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{
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instance.Cleanup();
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}
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SimpleIoc.Default.Unregister<T>();
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SimpleIoc.Default.Register<T>();
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}
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}
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}
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}
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