revit API 生成墙图元

由于Revit的版本问题，在网上找的生成墙图元的代码，在我机器上的Revit 2016中编译不能通过，通过多次调试，终于找到在revit 2016中使用API生成墙图元的代码，现在贴出来。

下面的代码在Revit 2016 + VS2013的环境下通过。

class CreateWall : IExternalCommand

    {

        public static Document RevitDoc;

        public static Autodesk.Revit.ApplicationServices.Application RevitApp;

        public Autodesk.Revit.UI.Result Execute(ExternalCommandData commandData,

            ref string message, Autodesk.Revit.DB.ElementSet elements)

        {

           RevitApp = commandData.Application.Application;

           var uiDoc = commandData.Application.ActiveUIDocument;

           if (uiDoc == null)

           {

               message = "Please open a document";

               return Result.Failed;

           }

           RevitDoc = commandData.Application.ActiveUIDocument.Document;

           var uiSel = commandData.Application.ActiveUIDocument.Selection;

           Transaction transaction = new Transaction(RevitDoc, "TestScript.CreateNewInstanceWithNewType");

           transaction.Start();

           try

           {

               var typeFilter = new ElementClassFilter(typeof(WallType));

               FilteredElementCollector wallTypes = new FilteredElementCollector(RevitDoc);

               wallTypes = wallTypes.WherePasses(typeFilter);

               WallType walltype = null;

               foreach (WallType wallType in wallTypes)

               {

                   walltype = wallType;

                   break;

               }

               if (walltype != null)

               {

                   //创建新的墙类型，使用Duplicate方法

                   var newtype = walltype.Duplicate(walltype.Name + "_new");

                   //可以在这里修改墙类型的参数，例如修改吸收率

                   var para = walltype.get_Parameter(BuiltInParameter.ANALYTICAL_ABSORPTANCE);

                   if (para != null && para.StorageType == StorageType.Double && para.IsReadOnly == false)

                   {

                       para.Set(2.0);

                   }

                   //找到一个标高

                   Level level = null;

                   var levelFilter = new ElementClassFilter(typeof(Level));

                   FilteredElementCollector levels = new FilteredElementCollector(RevitDoc);

                   levels = levels.WherePasses(levelFilter);

                   foreach (Level element in levels)

                   {

                       level = element;

                       break;

                         }

                         //创建墙

                         var wall = Wall.Create(RevitDoc, Line.CreateBound(new XYZ(0, 0, 0), new XYZ(10, 0, 0)),

                             newtype.Id, level.Id, 20, 0, false, false);

                         TaskDialog.Show("wall creation", "wall created, id = " + wall.Id);

                     }

                     transaction.Commit();

                 }

                 catch (Exception ex)

                 {

                     message = ex.ToString();

                     transaction.RollBack();

                     return Result.Failed;

                 }

           return Result.Succeeded;

        }

    }