从墙获取其上的窗户
窗户和门都是FamilyInstance类的实例，FamilyInstance.Host返回它所在墙的Id。所以可以通过遍历整个模型中的所有窗户，如果当前窗户的Host值和墙的Id相等，那么这个窗户就是我们要获得的。下面是代码示例(For Revit 2010，如需要请升级代码，需要改动些）。<code_begin>//在执行本命令之前，请选择一堵墙，然后执行本命令public class GetWallFromWindow : IExternalCommand { public IExternalCommand.Result Execute(ExternalCommandData revit, ref string message, ElementSet elements) { string strMsg = "/nElement IDs:/n"; Document doc = revit.Application.ActiveDocument; Wall wall1 = null; if (doc.Selection.Elements.Size < 1) { message = "请选择一个墙"; return IExternalCommand.Result.Failed; } ElementSetIterator iter = doc.Selection.Elements.ForwardIterator(); iter.MoveNext(); wall1 = iter.Current as Wall; if (wall1 == null) { message = "选择的对象不是墙！"; return IExternalCommand.Result.Failed; } ElementFilterIterator eIter = doc.get_Elements(typeof(FamilyInstance)); Element eCur = null; FamilyInstance insWindow = null; while (eIter.MoveNext()) { eCur = eIter.Current as Element; if (eCur.Category.Equals(doc.Settings.Categories.get_Item(BuiltInCategory.OST_Windows))) { insWindow = eCur as FamilyInstance; if (insWindow.Host.UniqueId.Equals(wall1.UniqueId)) { elements.Insert(insWindow); strMsg = strMsg + insWindow.Id.Value.ToString() + "/n"; } } } // 找到窗子后，对话框中显示找到的窗户数量。 strMsg = elements.Size.ToString() + " 个窗户在选中的墙中:/n" + strMsg; MessageBox.Show(strMsg); return IExternalCommand.Result.Succeeded; } }<code_end>作者：叶雄进文章来源：http://blog.csdn.net/joexiongjin/article/category/782739
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