Revit二次开发 - 属性（Parameter）的获取和设置

    本文演示如何获取和设置Revit文件中墙的属性值。

1.用Revit绘制模型

     

2.内部属性的枚举

    本文涉及到的枚举类型如下：

public enum BuiltInParameter
{
    WALL_TOP_OFFSET,       //顶部偏移
    WALL_BASE_OFFSET,      //底部偏移
    WALL_BASE_CONSTRAINT,  //底部约束
    WALL_HEIGHT_TYPE,      //顶部约束
    HOST_VOLUME_COMPUTED,   //体积
    HOST_AREA_COMPUTED      //面积
    ......
}

    代码实例

using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using System.Windows.Forms;

namespace RevitAddin3
{
    [TransactionAttribute(TransactionMode.Manual)]
    public class RevitAddin : IExternalCommand
    {
        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
        {
            UIDocument uiDoc = commandData.Application.ActiveUIDocument;
            Document doc = uiDoc.Document;
            FilteredElementCollector collector = new FilteredElementCollector(doc);
            var walls = collector.OfClass(typeof(Wall));

            string info = "";
            Transaction trans = new Transaction(doc);
            trans.Start("Move");
            foreach (var item in walls)
            {                  
                //设置顶部偏移
                item.get_Parameter(BuiltInParameter.WALL_TOP_OFFSET).SetValueString("4000");
                //设置底部偏移
                item.get_Parameter(BuiltInParameter.WALL_BASE_OFFSET).SetValueString("2000");
                //获取底部约束
                var baseConstraint = item.get_Parameter(BuiltInParameter.WALL_BASE_CONSTRAINT).AsValueString();
                info += "底部约束: " + baseConstraint + "\n";
                //获取顶部约束
                var heightType = item.get_Parameter(BuiltInParameter.WALL_HEIGHT_TYPE).AsValueString();
                info += "顶部约束: " + heightType + "\n";                
                //获取体积
                var volume = item.get_Parameter(BuiltInParameter.HOST_VOLUME_COMPUTED).AsValueString();
                info += "体积: " + volume + "\n";
                //获取面积
                var area = item.get_Parameter(BuiltInParameter.HOST_AREA_COMPUTED).AsValueString();
                info += "面积: " + area + "\n";
            }
            trans.Commit();

            MessageBox.Show(info, "信息");
            return Result.Succeeded;
        }
    }  
}

    执行结果：