Async stop

imagecatalog/DataModel.cs

@@ -8,6 +8,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Input;
+using Microsoft.Extensions.Logging;
 
 namespace ImageCatalog_2
 {
@@ -17,20 +18,36 @@ namespace ImageCatalog_2
         public ICommand TestCommand { get; }
 
         public ICommand AsyncTestCommand { get; }
+        public ICommand AsyncCancelOperationCommand { get; }
         
         public ICommand ProcessImagesCommand { get; }
 
         private readonly ITestService _service;
-        public DataModel(ITestService testService)
+        private readonly ILogger<DataModel>  _logger;
+        public DataModel(ITestService testService, ILogger<DataModel> logger)
         {
             _service = testService;
+            _logger = logger;
 
             TestCommand = new RelayCommand(Test);
             AsyncTestCommand = new AsyncCommand(TestAsync);
-
+            AsyncCancelOperationCommand = new AsyncCommand(CancelOperation);
+            
             ProcessImagesCommand = new AsyncCommand(ProcessImages);
         }
 
+        private CancellationTokenSource? _mainToken;
+
+        public CancellationTokenSource? MainToken
+        {
+            get => _mainToken;
+            set
+            {
+                _mainToken = value;
+                NotifyPropertyChanged();
+            }
+        }
+
         private string _sourcePath;
 
         public string SourcePath
@@ -130,6 +147,21 @@ namespace ImageCatalog_2
         {
             
         }
+
+        private async Task CancelOperation()
+        {
+            try
+            {
+                await MainToken?.CancelAsync();
+
+                UiEnabled = true;
+            }
+            catch (Exception e)
+            {
+                _logger.LogError(e.Message, "Error canceling the token");
+                _logger.LogInformation("Ignora questo errore");
+            }
+        }
         
     }
 }