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Nitrox.Launcher/Models/Extensions/StorageProviderExtensions.cs

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+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Avalonia.Platform.Storage;
+
+namespace Nitrox.Launcher.Models.Extensions;
+
+public static class StorageProviderExtensions
+{
+    public static async Task<string> OpenFolderPickerAsync(this IStorageProvider storageProvider, string title, string startingFolder = null)
+    {
+        IStorageFolder startingStorageFolder = null;
+        if (startingFolder != null)
+        {
+            startingStorageFolder = await storageProvider.TryGetFolderFromPathAsync(startingFolder);
+        }
+        IReadOnlyList<IStorageFolder> dialogResult = await storageProvider.OpenFolderPickerAsync(new FolderPickerOpenOptions
+        {
+            Title = title,
+            AllowMultiple = false,
+            SuggestedStartLocation = startingStorageFolder
+        });
+        return dialogResult.FirstOrDefault()?.TryGetLocalPath() ?? "";
+    }
+}