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InkCanvasForClass/Helpers/DelayActionHelper.cs

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+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Timers;
+
+namespace Ink_Canvas.Helpers
+{
+    public class DelayAction
+    {
+        Timer _timerDebounce;
+
+        /// <summary>
+        /// 防抖函式
+        /// </summary>
+        /// <param name="inv">同步的對象，一般傳入控件，不需要可null</param>
+        public void DebounceAction(int timeMs, ISynchronizeInvoke inv, Action action)
+        {
+            lock (this) {
+                if (_timerDebounce == null) {
+                    _timerDebounce = new Timer(timeMs) { AutoReset = false };
+                    _timerDebounce.Elapsed += (o, e) => {
+                        _timerDebounce.Stop(); _timerDebounce.Close(); _timerDebounce = null;
+                        InvokeAction(action, inv);
+                    };
+                }
+                _timerDebounce.Stop();
+                _timerDebounce.Start();
+            }
+        }
+
+        private static void InvokeAction(Action action, ISynchronizeInvoke inv)
+        {
+            if (inv == null)
+            {
+                action();
+            }
+            else
+            {
+                if (inv.InvokeRequired)
+                {
+                    inv.Invoke(action, null);
+                }
+                else
+                {
+                    action();
+                }
+            }
+        }
+    }
+}