Properties: prevent crash when access denied (#1139)

Author: hez2010

Files/View Models/SelectedItemsPropertiesViewModel.cs

@@ -150,6 +150,13 @@ public string ItemMD5Hash
                 }
             }
         }
+        private bool _ItemMD5HashCalcError;
+        public bool ItemMD5HashCalcError
+        {
+            get => _ItemMD5HashCalcError;
+            set => Set(ref _ItemMD5HashCalcError, value);
+        }
+
         public Visibility _ItemMD5HashVisibility = Visibility.Collapsed;
 
         public Visibility ItemMD5HashVisibility
@@ -316,7 +323,16 @@ public async Task GetPropertiesAsync(CancellationTokenSource _tokenSource)
                 var hashAlgTypeName = HashAlgorithmNames.Md5;
                 ItemMD5HashProgressVisibility = Visibility.Visible;
                 ItemMD5HashVisibility = Visibility.Visible;
-                ItemMD5Hash = await App.CurrentInstance.InteractionOperations.GetHashForFile(Item, hashAlgTypeName, _tokenSource.Token, ItemMD5HashProgress);
+                try
+                {
+                    ItemMD5Hash = await App.CurrentInstance.InteractionOperations.GetHashForFile(Item, hashAlgTypeName, _tokenSource.Token, ItemMD5HashProgress);
+                }
+                catch (Exception ex)
+                {
+                    NLog.LogManager.GetCurrentClassLogger().Error(ex, ex.Message);
+                    ItemMD5HashProgress.Value = ItemMD5HashProgress.Maximum;
+                    ItemMD5HashCalcError = true;
+                }
             }
             else if (Item.PrimaryItemAttribute == StorageItemTypes.Folder)
             {

Files/Views/Pages/Properties.xaml

@@ -183,6 +183,7 @@
                     Grid.Row="5"
                     Grid.Column="1"
                     Margin="20,0,0,0"
+                    ShowError="{x:Bind ViewModel.ItemMD5HashCalcError, Mode=OneWay}"
                     Visibility="{x:Bind ViewModel.ItemMD5HashProgressVisibility, Mode=OneWay}" />