20230201_145_upperpc/InSituLaboratory/ViewModels/Pages/ViewModelBase.cs

using Prism.Commands;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace InSituLaboratory.ViewModels.Pages
{
    public class ViewModelBase : BindableBase, INavigationAware
    {
        public string PageTitle { get; set; } = "页面标题";
        public bool IsCanClose { get; set; } = true;

        public string SearchKey {  get; set;  }
        public string PrimaryKey {  get; set;  }


        public DelegateCommand CloseCommand { get; set; }
        public DelegateCommand RefreshCommand { get; set; }
        public DelegateCommand<object> ModifyCommand { get; set; }
        public DelegateCommand<object> DeleteCommand { get; set; }

        IRegionManager _regionManager;
        public ViewModelBase(IRegionManager regionManager)
        {
            _regionManager = regionManager;

            CloseCommand = new DelegateCommand(DoClose);
            RefreshCommand = new DelegateCommand(Refresh);
            ModifyCommand = new DelegateCommand<object>(DoModify);
            DeleteCommand = new DelegateCommand<object>(DoDelete);
        }

        private void DoClose()
        {
            //拿到主区域，从区域里移除对应的页面，根据页面的名称
            var region = _regionManager.Regions["MainRegion"];
            var view = region.Views.Where(v => v.GetType().Name == PageName).FirstOrDefault();
            if (view != null)
            {
                region.Remove(view);

            }
        }

        public virtual void Refresh() { }
        public virtual void DoModify(object model) { }
        public virtual void DoDelete(object model) { }
        private string PageName { get; set; }

        public void OnNavigatedTo(NavigationContext navigationContext)
        {
            PageName = navigationContext.Uri.ToString();
        }

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

        public void OnNavigatedFrom(NavigationContext navigationContext)
        {

        }
    }
}