SamplePreSystem-CS/SamplePreSystem.UI/ViewModel/Login/LoginViewModel.cs

using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using SamplePre.ProcessBll.BLL;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Security.Principal;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;

namespace SamplePreSystem.UI.ViewModel.Login
{
    public partial class LoginViewModel : ObservableObject
    {
        

        UsersBll usersBll = new UsersBll();

        /// <summary>
        /// 关闭委托
        /// </summary>
        public Action<bool> ColseAction;

        //保持用户名
        public Action<string> SaveUserAction;

        public LoginViewModel()
        {
            ;
        }

        [ObservableProperty]
        public string errInfo = "";

        [ObservableProperty]
        public bool isSaveUser = false;

        [ObservableProperty]
        public string userName = "";


        [ObservableProperty]
        public string userPwd = "";



        public bool UserChecked()
        {         

            if (usersBll.CheckUser(UserName, UserPwd) == false)
            {
               
                ErrInfo = "登录账号或密码错误！";
                return false;
            }

            if (IsSaveUser == true)
            {
                SaveUserAction?.Invoke(UserName);

            }

            ColseAction?.Invoke(true);

            return true;

        }

        /// <summary>
        /// 登录
        /// </summary>
        [RelayCommand]
        public void LoginButtonClick()
        {
            UserChecked();

        }

        /// <summary>
        /// 回车登录
        /// </summary>
        /// <param name="e"></param>
        [RelayCommand]
        public void PwdKeyDown(KeyEventArgs e)
        {
            if (e.Key == Key.Enter)
            {
                UserChecked();
            }

        }



        /// <summary>
        /// 退出
        /// </summary>
        [RelayCommand]
        public void CancelClick()
        {
            ColseAction?.Invoke(false);
        }





    }
}