LampInspectionMachine/ViewModels/MenuViewModel.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Prism.Mvvm;
using System.Threading.Tasks;
using Prism.Commands;
using Prism.Events;
using Prism.Ioc;
using Prism.Regions;
using System.Windows.Controls;
using LampInspectionMachine.Core;
using OpenCvSharp.Flann;
using System.Windows.Forms;

namespace LampInspectionMachine.ViewModels
{
    public  class MenuViewModel:BindableBase, IConfirmNavigationRequest
    {
        private IContainerProvider _container;
        private IEventAggregator _eventAggregator;
        private IRegionManager _regionManager;
        private Management management;


        private DelegateCommand<string> _OpenCameraViewCommand;
        public DelegateCommand<string> OpenCameraViewCommand =>
            _OpenCameraViewCommand ?? ( _OpenCameraViewCommand = new DelegateCommand<string>(CameraViewShow) );


        private DelegateCommand <string> _OpenVisionProViewCommand;
        public DelegateCommand<string> OpenVisionProViewCommand =>
            _OpenVisionProViewCommand ?? ( _OpenVisionProViewCommand = new DelegateCommand<string>(VisionProViewShow) );

        public DelegateCommand LoadedCommand { get; set; }
        public Management Management { get => management; set { SetProperty(ref management, value); } }

        private bool IsLoad=false;
  

        public MenuViewModel(IContainerProvider container, IRegionManager regionManager, IEventAggregator eventAggregator) 
        {
            _container = container;
            _eventAggregator = eventAggregator;
            _regionManager = regionManager;
            Management=container.Resolve<Management>(); 
            LoadedCommand = new DelegateCommand(OnLoad);
        }



        private async void OnLoad()
        {

            NavigationParameters paras = new NavigationParameters();
            paras.Add("Index",0); //键值对
            _regionManager.Regions[ "MenuRegionContent" ].RequestNavigate("CameraView", paras);
            IsLoad = true;
         
        }

        void CameraViewShow(string index)
        {
            
            NavigationParameters paras = new NavigationParameters();
            paras.Add("Index", Convert.ToInt32(index)); //键值对
            _regionManager.Regions[ "MenuRegionContent" ].RequestNavigate("CameraView", paras);
        }
        void VisionProViewShow(string index)
        {
            NavigationParameters paras = new NavigationParameters();
            paras.Add("Index", Convert.ToInt32(index)); //键值对
            _regionManager.Regions[ "MenuRegionContent" ].RequestNavigate("VisionProView", paras);
        }

        public void ConfirmNavigationRequest(NavigationContext navigationContext, Action<bool> continuationCallback)
        {
            
            continuationCallback(IsLoad);
        }

        public void OnNavigatedTo(NavigationContext navigationContext)
        {
           
        }

        public bool IsNavigationTarget(NavigationContext navigationContext)
        {
            return true;
        }

        public void OnNavigatedFrom(NavigationContext navigationContext)
        {


        }
    }
}