1

Src/Core/DesignPatterns/DoubleBuffer.cs

@@ -32,6 +32,11 @@ namespace BITKit
 
 		public void Release(T newValue)
 		{
+			if (newValue is null)
+			{
+				BIT4Log.Warning<DoubleBuffer<T>>("newValue is null,please check");
+			}
+			
 			Current = newValue;
 			OnRelease?.Invoke(newValue);
 			_release.SetValueThenAllow(newValue);

Src/Core/Hotkey/IHotkeyCollection.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
+using System.Linq;
 
 namespace BITKit.UX.Hotkey
 {
@@ -37,6 +38,14 @@ namespace BITKit.UX.Hotkey
 
 	public class HotkeyCollection:IHotkeyCollection
 	{
+		public HotkeyCollection()
+		{
+			
+		}
+		public HotkeyCollection(params IHotkeyProvider[] hotkeyProviders)
+		{
+			_hotkeys = hotkeyProviders.ToHashSet();
+		}
 		private readonly HashSet<IHotkeyProvider> _hotkeys = new();
 		public IEnumerable<IHotkeyProvider> Hotkeys => _hotkeys;
 		public void Register(IHotkeyProvider hotkey)

Src/Core/Item/Item.cs

@@ -139,6 +139,17 @@ namespace BITKit
         /// </summary>
         // ReSharper disable once EventNeverInvoked.Global
         event Action<IRuntimeItem> OnRuntimePropertiesChanged;
+
+        public bool TryGetRuntimeProperty<T>(out T value)
+        {
+            if (RuntimeProperties.TryGetValue(typeof(T), out var o) && o is T t)
+            {
+                value = t;
+                return true;
+            }
+            value = default;
+            return false;
+        }
     }
 
     #endregion