添加项目文件。

RevitTools.Utils/Revit/ExEventHandle.cs

@@ -0,0 +1,51 @@
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Threading;
+
+namespace RevitTools.Utils.Revit
+{
+    /// <summary>
+    /// 外部事件处理程序
+    /// </summary>
+    public class ExEventHandle : IExternalEventHandler
+    {
+        /// <summary>
+        /// 创建具有指定名字的外部事件处理程序
+        /// </summary>
+        /// <param name="name"></param>
+        public ExEventHandle(string name)
+        {
+            this.name = name;
+        }
+
+        private readonly string name;
+
+        /// <summary>
+        /// 工作项队列
+        /// </summary>
+        internal readonly ConcurrentQueue<ExEventWorkItem> ExEventQueue = new ConcurrentQueue<ExEventWorkItem>();
+
+        /// <summary>
+        /// 执行外部事件函数
+        /// </summary>
+        /// <param name="app"></param>
+        public void Execute(UIApplication app)
+        {
+            while (ExEventQueue.TryDequeue(out ExEventWorkItem workItem))
+            {
+                workItem.InvokeAction(app);
+            }
+        }
+
+        /// <summary>
+        /// 获取字符串标识
+        /// </summary>
+        /// <returns></returns>
+        public string GetName()
+        {
+            return name;
+        }
+    }
+}