添加的登录界面，使用固定账号和密码测试登录逻辑成功

WorkStation.Client/ViewModels/Dialogs/LoginViewModel.cs

@@ -0,0 +1,90 @@
+using Prism.Commands;
+using Prism.Mvvm;
+using Prism.Services.Dialogs;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Data;
+
+namespace WorkStation.Client.ViewModels.Dialogs
+{
+    public class LoginViewModel : BindableBase, IDialogAware
+    {
+        /// <summary>
+        /// 弹窗标题
+        /// </summary>
+        public string Title => "登录界面";
+
+        /// <summary>
+        /// 账户
+        /// </summary>
+        private string _account = string.Empty;
+        public string Account
+        {
+            get => _account;
+            set => SetProperty(ref _account, value);
+        }
+
+        /// <summary>
+        /// 密码
+        /// </summary>
+        private string _password = string.Empty;
+        public string Password
+        {
+            get => _password;
+            set => SetProperty(ref _password, value);
+        }
+
+        /// <summary>
+        /// 用于关闭窗口时，判断是否登录成功。
+        /// 如果登录失败就终止当前应用。
+        /// </summary>
+        private bool _isSuccess = false;
+
+        /// <summary>
+        /// 登录名利
+        /// </summary>
+        public DelegateCommand LoginCommand { get; set; }
+
+        /// <summary>
+        /// 请求关闭委托
+        /// </summary>
+        public event Action<IDialogResult> RequestClose;
+
+        /// <summary>
+        /// Determines whether the dialog can be closed.
+        /// </summary>
+        /// <returns><see langword="true"/> if the dialog can be closed; otherwise, <see langword="false"/>.</returns>
+        public bool CanCloseDialog()
+        {
+            return true;
+        }
+
+        public void OnDialogClosed()
+        {
+            if (_isSuccess == false)
+            {
+                Application.Current.Shutdown();
+            }
+        }
+
+        public void OnDialogOpened(IDialogParameters parameters)
+        {
+            
+        }
+        public LoginViewModel()
+        {
+            LoginCommand = new DelegateCommand(() =>
+            {
+                if (Account == "11" && Password == "22")
+                {
+                    _isSuccess = true;
+                    RequestClose(new DialogResult(ButtonResult.OK));
+                }
+            });
+        }
+    }
+}