- [Core] fix formatting issue with Material preview.

AssetStudio/Helpers/KVPConverter.cs

@@ -0,0 +1,35 @@
+using Newtonsoft.Json;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+
+namespace AssetStudio;
+public class KVPConverter<T> : JsonConverter
+{
+    public KVPConverter() : base() { }
+
+    public override bool CanConvert(Type objectType)
+    {
+        throw new NotImplementedException();
+    }
+
+    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+    {
+        throw new NotImplementedException();
+    }
+
+    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+    {
+        var list = (IList)value;
+        writer.WriteStartObject();
+        foreach (var val in list)
+        {
+            if (val is KeyValuePair<string, T> kvp)
+            {
+                writer.WritePropertyName(kvp.Key.ToString());
+                serializer.Serialize(writer, kvp.Value);
+            }
+        }
+        writer.WriteEndObject();
+    }
+}