Revit 2011 二次开发之“高亮显示错误提示”

[Transaction(TransactionMode.Manual)]
[Regeneration(RegenerationOption.Manual)]
public class ArgumentUsage : IExternalCommand
{
    public Result Execute(ExternalCommandData commandData, ref string messages, ElementSet elements)
    {
        UIApplication uiApp = commandData.Application;
        //得到选中的对象
        Autodesk.Revit.UI.Selection.Selection sel = uiApp.ActiveUIDocument.Selection;
        foreach (Element elem in sel.Elements)
        {
            elements.Insert(elem);//插入错误列表
        }

        messages = "当前选择集中包含如下对象";

        //为了显示错误信息框,需要返回Failed
        return Result.Failed;
    }
}

过滤出来Wall

[Transaction(TransactionMode.Manual)]
[Regeneration(RegenerationOption.Manual)]
public class ElementsWall : IExternalCommand
{
    public Result Execute(ExternalCommandData commandData, ref string messages, ElementSet elements)
    {
        FilteredElementCollector collector =
            new FilteredElementCollector(commandData.Application.ActiveUIDocument.Document);
        //筛选出来Wall
        ICollection<Element> collection = collector.OfClass(typeof(Wall)).ToElements();
        foreach (Element e in collection)
        {
            elements.Insert(e);
        }
        return Result.Failed;
    }
}