Display_D_HP/TeamAAS-VM/ViewModels/User/SignUpViewModel.cs

using Prism.Commands;
using Prism.Events;
using Prism.Ioc;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Windows.Input;
using System.Threading.Tasks;
using TeamAAS_VP.Data;
using TeamAAS_VP.Enums;
using TeamAAS_VP.Events;
using TeamAAS_VP.Core;
using TeamAAS_VP.Models;
using TouchSocket.Core;
using TeamAAS_VP.Resources.Languages;
using TeamAAS_VP.Interfaces;

namespace TeamAAS_VP.ViewModels.User
{
    public class SignUpViewModel : BindableBase
    {
        IRegionManager _regionManager;
        IEventAggregator _eventAggregator;
        IContainerProvider _container;
        private readonly ISystemDatabaseService _systemDb;
        #region 属性

        public TeamAAS_VP.Models.User MyUser { get; set; } = new TeamAAS_VP.Models.User();

        #endregion

        #region 命令
        /// <summary>
        /// 注册命令
        /// </summary>
        public DelegateCommand SignUpCommand { get; set; }
        /// <summary>
        /// 登录命令
        /// </summary>
        public DelegateCommand BackupCommand { get; set; }
        #endregion

        #region 事件

        #endregion

        public SignUpViewModel(IRegionManager regionManager, IEventAggregator ea, IContainerProvider container, ISystemDatabaseService systemDb)
        {
            _regionManager = regionManager;
            _eventAggregator = ea;
            _container = container;
            _systemDb = systemDb;

            SignUpCommand = new DelegateCommand(async () => await SignUpAsync());
            BackupCommand = new DelegateCommand(new Action(Backup));
        }

        #region 方法
        private void Backup()
        {
            _regionManager.RequestNavigate("UserRegionContext", "LoginView");
            _container.Resolve<LoginViewModel>().UpdateUserList();
        }

        private async Task SignUpAsync()
        {
            if (string.IsNullOrEmpty(MyUser.UserName))
                return;
            MyUser.CreateTime = DateTime.Now;
            MyUser.IsRemember = false;

            try
            {
                // if Id is zero then treat as new
                var added = await _systemDb.AddUserAsync(MyUser);
                _eventAggregator.GetEvent<SnackbarMessageNotification>().Publish(new MessageParameter() { Msg = Lang.完成注册, Duration = 1 });
            }
            catch (Exception)
            {
                _eventAggregator.GetEvent<SnackbarMessageNotification>().Publish(new MessageParameter() { Msg = Lang.已注册, Duration = 1 });
            }
        }
        #endregion
    }
}