fix: 插件管理无法弹出对话框

CRSim/MainWindow.xaml

@@ -7,7 +7,8 @@
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     mc:Ignorable="d"
-    Title="国铁信息显示模拟">
+    Title="国铁信息显示模拟"
+    Activated="Window_Activated">
 
     <Window.SystemBackdrop>
         <MicaBackdrop />

CRSim/MainWindow.xaml.cs

@@ -43,5 +43,11 @@ public sealed partial class MainWindow : Window
                 }
             }
         }
+
+        private void Window_Activated(object sender, WindowActivatedEventArgs args)
+        {
+            var dialogService = App.AppHost.Services.GetService<IDialogService>()!;
+            (dialogService as DialogService)?.SetXamlRoot(this.Content.XamlRoot);
+        }
     }
 }

CRSim/ViewModels/PluginManagementPageViewModel.cs

@@ -55,10 +55,6 @@ public partial class PluginManagementPageViewModel : ObservableObject
                 await _dialogService.ShowTextAsync("安装失败", $"{ex}");
             }
         }
-        else
-        {
-            await _dialogService.ShowMessageAsync("未选择文件", "请先选择一个插件包文件。");
-        }
     }
     [RelayCommand]
     public void UninstallPlugin()

CRSim/Views/StationManagementPage.xaml

@@ -12,8 +12,7 @@
     xmlns:winui="using:CommunityToolkit.WinUI"   
     xmlns:viewmodels="using:CRSim.ViewModels"   
     xmlns:models="using:CRSim.Models"     
-    xmlns:coremodels="using:CRSim.Core.Models"     
-    Loaded="Page_Loaded"
+    xmlns:coremodels="using:CRSim.Core.Models"
     mc:Ignorable="d"
     d:DataContext="{d:DesignInstance Type=viewmodels:StationManagementPageViewModel}">
     <Page.Resources>

CRSim/Views/StationManagementPage.xaml.cs

@@ -9,9 +9,4 @@ public sealed partial class StationManagementPage : Page
         InitializeComponent();
         DataContext = ViewModel;
     }
-    private void Page_Loaded(object sender, RoutedEventArgs e)
-    {
-        var dialogService = App.AppHost.Services.GetService<IDialogService>()!;
-        (dialogService as DialogService)?.SetXamlRoot(XamlRoot);
-    }
 }