Merge pull request #143 from NLick47/main

fix: 修复选择下载路径时引发的另一个问题

DownKyi.Core/Utils/ListHelper.cs

@@ -39,7 +39,7 @@ public static class ListHelper
     /// <param name="list"></param>
     /// <param name="item"></param>
     /// <param name="index"></param>
-    public static void InsertUnique<T>(Collection<T> list, T item, int index)
+    public static void InsertUnique<T>(Collection<T> list, T item, int index, ref T currentSelection)
     {
         if (!list.Contains(item))
         {
@@ -47,8 +47,19 @@ public static class ListHelper
         }
         else
         {
+            var previousSelection = currentSelection;
             list.Remove(item);
             list.Insert(index, item);
+            if (previousSelection != null && previousSelection.Equals(item))
+            {
+                currentSelection = previousSelection;
+            }
         }
     }
+
+    public static void InsertUnique<T>(Collection<T> list, T item, int index)
+    {
+        T defaultSelection = default;
+        InsertUnique(list, item, index, ref defaultSelection); 
+    }
 }

DownKyi/ViewModels/Dialogs/ViewDownloadSetterViewModel.cs

@@ -379,7 +379,7 @@ public class ViewDownloadSetterViewModel : BaseDialogViewModel
         // 将Directory移动到第一项
         // 如果直接在ComboBox中选择的就需要
         // 否则选中项不会在下次出现在第一项
-        ListHelper.InsertUnique(DirectoryList, Directory, 0);
+        ListHelper.InsertUnique(DirectoryList, Directory, 0,ref _directory);
 
         // 将更新后的DirectoryList写入历史中
         SettingsManager.GetInstance().SetSaveVideoRootPath(Directory);