add simple runtime; fix the issue of crashing when creating file and folder; some tweaks

ExampleApp/Src/FPSPlayer.cs

@@ -1,3 +1,4 @@
+using System.Runtime.InteropServices;
 using Prism;
 
 namespace FPSExample
@@ -46,6 +47,9 @@ namespace FPSExample
             m_LastMousePosition = Input.GetMousePosition();
             
             Input.SetCursorMode(Input.CursorMode.Locked);
+            
+            int size = Marshal.SizeOf<Transform>();
+            Console.WriteLine($"C# size of Transform: {size}");
         }
 
         void OnUpdate(float ts)