Tested first run

Shared/Models/SaveContainer.cs

@@ -0,0 +1,53 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace View_by_Distance.Shared.Models;
+
+public class SaveContainer
+{
+
+    protected readonly string _CheckFile;
+    protected readonly string _Directory;
+    protected readonly FileHolder? _FaceFileHolder;
+    protected readonly FileHolder? _HiddenFaceFileHolder;
+    protected readonly string _Json;
+    protected readonly FileHolder? _FacePartsFileHolder;
+    protected readonly FileHolder? _ResizedFileHolder;
+    protected readonly string _ShortcutFile;
+    public string CheckFile => _CheckFile;
+    public string Directory => _Directory;
+    public FileHolder? FaceFileHolder => _FaceFileHolder;
+    public FileHolder? HiddenFaceFileHolder => _HiddenFaceFileHolder;
+    public string Json => _Json;
+    public FileHolder? FacePartsFileHolder => _FacePartsFileHolder;
+    public FileHolder? ResizedFileHolder => _ResizedFileHolder;
+    public string ShortcutFile => _ShortcutFile;
+
+    [JsonConstructor]
+    public SaveContainer(string checkFile, string directory, FileHolder? faceFileHolder, FileHolder? hiddenFaceFileHolder, string json, FileHolder? facePartsFileHolder, FileHolder? resizedFileHolder, string shortcutFile)
+    {
+        _CheckFile = checkFile;
+        _Directory = directory;
+        _FaceFileHolder = faceFileHolder;
+        _HiddenFaceFileHolder = hiddenFaceFileHolder;
+        _Json = json;
+        _FacePartsFileHolder = facePartsFileHolder;
+        _ResizedFileHolder = resizedFileHolder;
+        _ShortcutFile = shortcutFile;
+    }
+
+    public SaveContainer(string directory) :
+        this(string.Empty, directory, null, null, string.Empty, null, null, string.Empty)
+    { }
+
+    public SaveContainer(string checkFile, string directory, string json) :
+        this(checkFile, directory, null, null, json, null, null, string.Empty)
+    { }
+
+    public override string ToString()
+    {
+        string result = JsonSerializer.Serialize(this, new JsonSerializerOptions() { WriteIndented = true });
+        return result;
+    }
+
+}