添加了处理中的对话框

Services/DialogService.cs

@@ -1,4 +1,5 @@
-using iNKORE.UI.WPF.Modern.Controls;
+using HandyControl.Tools.Extension;
+using iNKORE.UI.WPF.Modern.Controls;
 using NPOI.SS.Formula.Functions;
 using PMSWPF.Models;
 using PMSWPF.ViewModels.Dialogs;
@@ -119,4 +120,14 @@ public class DialogService :IDialogService
         }
         return null;
     }
+
+    public ContentDialog ShowProcessingDialog(string title, string message)
+    {
+        ProcessingDialogViewModel vm = new ProcessingDialogViewModel();
+        vm.Title = title;
+        vm.Message = message;
+        var dialog = new ProcessingDialog(vm);
+        _ = dialog.ShowAsync(); // 不await，让它在后台显示
+        return dialog;
+    }
 }