添加项目文件。

RvAddinTest/WriteIdCodeCmd.cs

@@ -0,0 +1,32 @@
+using System;
+using Autodesk.Revit.Attributes;
+using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
+
+using Nice3point.Revit.Toolkit.External;
+
+namespace RvAddinTest
+{
+    /// <summary>
+    /// Revit执行命令
+    /// </summary>
+    [Transaction(TransactionMode.Manual)]
+    [Regeneration(RegenerationOption.Manual)]
+    public class WriteIdCodeCmd : ExternalCommand
+    {
+        public override void Execute()
+        {
+            try
+            {
+                var win = new ActionWindow();
+                win.Show();
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine(e);
+                throw;
+            }
+
+        }
+    }
+}