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/MainWindowViewModel.cs

@@ -0,0 +1,19 @@
+using Prism.Mvvm;
+
+namespace WorkStation.Client.ViewModels
+{
+    public class MainWindowViewModel : BindableBase
+    {
+        private string _title = "Prism Application";
+        public string Title
+        {
+            get { return _title; }
+            set { SetProperty(ref _title, value); }
+        }
+
+        public MainWindowViewModel()
+        {
+
+        }
+    }
+}