添加项目文件。

Sai.RvKits/RvView/SystemDisplayCmd.cs

@@ -0,0 +1,24 @@
+using Autodesk.Revit.Attributes;
+
+using Nice3point.Revit.Toolkit.External;
+
+using Sai.RvKits.RvMEP;
+
+namespace Sai.RvKits.RvView;
+
+/// <summary>
+/// Revit执行命令
+/// </summary>
+[Transaction(TransactionMode.Manual)]
+[Regeneration(RegenerationOption.Manual)]
+public class SystemDisplayCmd : ExternalCommand
+{
+    public override void Execute()
+    {
+        var view = new SystemDisplayView()
+        {
+            DataContext = new SystemDisplayViewModel(UiApplication)
+        };
+        view.ShowDialog();
+    }
+}