登录功能，自动登录实现

ProfilePage.xaml.cs

@@ -1,4 +1,5 @@
 using CommunityToolkit.Mvvm.ComponentModel;
+using SunlightAggregationTerminal.Class;
 using SunlightAggregationTerminal.Models;
 using SunlightAggregationTerminal.View;
 using System.Collections.ObjectModel;
@@ -15,10 +16,13 @@ public partial class ProfilePage : ContentPage
        
     private async void Out_Clicked(object sender, EventArgs e)
     {
+        //退出
         bool shouldExit = await DisplayAlertAsync("退出确认", "确定要退出吗？", "是", "否");
         if (shouldExit)
         {
             App.GlobalData.LogNo = false;
+            await TcpServer.tcpClient.CloseAsync("");
+
             var logpage = new View.LogPage();
             await Navigation.PushModalAsync(logpage);
         }