Move base.OnStartup(e) to the beginning of the method

Author: CodingOctocat

IPConfig/App.xaml.cs

@@ -162,6 +162,8 @@ protected override void OnExit(ExitEventArgs e)
 
     protected override void OnStartup(StartupEventArgs e)
     {
+        base.OnStartup(e);
+
         // 全局异常处理。
         SetupExceptionHandling();
 
@@ -171,8 +173,6 @@ protected override void OnStartup(StartupEventArgs e)
 
         var mainWindow = Services.GetRequiredService<MainWindow>();
         mainWindow.Show();
-
-        base.OnStartup(e);
     }
 
     /// <summary>