添加项目文件。

Szmedi.AIScriptRunner/Samples/Selection.csx

@@ -0,0 +1,27 @@
+try
+{
+    // 获取当前文档中选中的元素
+    var selection = uidoc.Selection;
+    ICollection<ElementId> selectedIds = uidoc.Selection.GetElementIds();
+
+    if (0 == selectedIds.Count)
+    {
+        TaskDialog.Show("Revit", "未选中任何元素");
+    }
+    else
+    {
+        String info = "选中元素的Id： ";
+        foreach (ElementId id in selectedIds)
+        {
+            info += "\n\t" + id.IntegerValue;
+        }
+
+        TaskDialog.Show("Revit", info);
+    }
+}
+catch (Exception e)
+{
+    return e;
+}
+
+return "Done";