添加启动页

DMS.WPF/ViewModels/SplashViewModel.cs

@@ -0,0 +1,61 @@
+// 文件: DMS.WPF/ViewModels/SplashViewModel.cs
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+using DMS.Application.Interfaces;
+using DMS.WPF.Services;
+using System;
+using System.Threading.Tasks;
+using DMS.Application.Services;
+
+namespace DMS.WPF.ViewModels;
+
+/// <summary>
+/// 启动加载窗口的ViewModel。
+/// </summary>
+public partial class SplashViewModel : ObservableObject
+{
+    private readonly IServiceProvider _serviceProvider;
+    private readonly IInitializeService _initializeService;
+
+    [ObservableProperty]
+    private string _loadingMessage = "正在加载...";
+
+    public SplashViewModel(IServiceProvider serviceProvider, IInitializeService initializeService)
+    {
+        _serviceProvider = serviceProvider;
+        _initializeService = initializeService;
+    }
+
+    /// <summary>
+    /// 开始执行初始化任务。
+    /// </summary>
+    public async Task InitializeAsync()
+    {
+        try
+        {
+            LoadingMessage = "正在初始化数据库...";
+             _initializeService.InitializeTables();
+
+            LoadingMessage = "正在加载系统配置...";
+            // 可以在这里添加加载配置的逻辑
+            await Task.Delay(1500); // 模拟耗时
+
+            LoadingMessage = "正在连接后台服务...";
+            // 可以在这里添加连接服务的逻辑
+            await Task.Delay(1500); // 模拟耗时
+
+            LoadingMessage = "加载完成，正在启动主界面...";
+            await Task.Delay(1500);
+
+            // 初始化完成，显示主窗口
+            var navigationService = (INavigationService)_serviceProvider.GetService(typeof(INavigationService));
+            await navigationService.ShowMainWindowAsync();
+        }
+        catch (Exception ex)
+        {
+            // 处理初始化过程中的异常
+            LoadingMessage = $"初始化失败: {ex.Message}";
+            // 在此可以记录日志或显示错误对话框
+        }
+    }
+}