创建新的管道类型，并且修改管道的弯头类型和T形连接弯头类型

 

这是一个典型的增加新类型（Duplicate（）来实现），并且修改类型的参数值。这里一个特殊的情况是这里的两个参数值都是Revit的接头类型对象。实际上保存在这两个参数中的是ElementId类型的值，指向实际的两种接头类型。

在参数中如何修改参数存储类型是对象Id的值呢？ 请看下面的代码。

 

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Linq;

using  Autodesk.Revit .DB;
using Autodesk.Revit.DB.Plumbing;
using Autodesk.Revit.UI;
using Autodesk.Revit .ApplicationServices;
using Autodesk.Revit.Attributes ;

 

[TransactionAttribute(Autodesk.Revit.Attributes.TransactionMode.Manual)]
[RegenerationAttribute(Autodesk.Revit.Attributes.RegenerationOption.Manual)]
public class RevitCommand : IExternalCommand
{
  public Result Execute(ExternalCommandData commandData, ref string messages, ElementSet elements)
  {
    UIApplication app = commandData.Application;
    Document rvtDoc = app.ActiveUIDocument.Document;
    PipeType pipeType = null;
    List<Autodesk.Revit.DB.Element> ptypes = new List<Autodesk.Revit.DB.Element>();
    FilteredElementCollector collector = new FilteredElementCollector(rvtDoc);

    collector.OfCategory(BuiltInCategory.OST_PipeCurves);
    collector.OfClass(typeof(ElementType));
    ptypes.AddRange(collector.ToElements());

    foreach (Element ptype in ptypes)
    {
      if (string.Compare(ptype.Name, "standard", true) == 0)
      {
        pipeType = ptype as PipeType;
        break;
      }
    }

    if (pipeType != null)
    {
      string name = "ADNNewType";
      Transaction trans = new Transaction(rvtDoc, "ExComm");
      trans.Start();
      Autodesk.Revit.DB.ElementType newType = pipeType.Duplicate(name);
      trans.Commit();
      if (newType != null)
      {
        Transaction t = new Transaction(rvtDoc, "ExComm1");
        t.Start();

        ElementId id1 = FindFamilyType(rvtDoc, typeof(FamilySymbol), "Elbow - Threaded - MI - Class 150", "Standard", BuiltInCategory.OST_PipeFitting).Id;
        ElementId id2 = FindFamilyType(rvtDoc, typeof(FamilySymbol), "Tee - Threaded - MI - Class 150", "Standard", BuiltInCategory.OST_PipeFitting).Id;

        //change Elbow parameter value
        newType.get_Parameter(BuiltInParameter.RBS_CURVETYPE_DEFAULT_ELBOW_PARAM).Set(id1);
        //change Tee parameter value
        newType.get_Parameter(BuiltInParameter.RBS_CURVETYPE_DEFAULT_TEE_PARAM).Set(id2);
        //change "Preferred unction Type" parameter value
        newType.get_Parameter(BuiltInParameter.RBS_CURVETYPE_PREFERRED_BRANCH_PARAM).Set(0);
               

        t.Commit();
      }
    }

    return Result.Succeeded;

  }

  //====================================================================
  // Helper Functions
  //====================================================================
  /// <summary>
  /// Helper function: find an element of the given type, name, and category(optional)
  /// You can use this, for example, to find a specific wall and window family with the given name.
  /// e.g.,
  /// FindFamilyType(_doc, GetType(WallType), "Basic Wall", "Generic - 200mm")
  /// FindFamilyType(_doc, GetType(FamilySymbol), "M_Single-Flush", "0915 x 2134mm", BuiltInCategory.OST_Doors)
  /// </summary>
  public static Element FindFamilyType(Document rvtDoc, Type targetType,
    string targetFamilyName, string targetTypeName, Nullable<BuiltInCategory> targetCategory)
  {
    // First, narrow down to the elements of the given type and category

    var collector = new FilteredElementCollector(rvtDoc).OfClass(targetType);
    if (targetCategory.HasValue)
    {
      collector.OfCategory(targetCategory.Value);
    }

    // Parse the collection for the given names
    // Using LINQ query here.

    var targetElems =
        from element in collector
        where element.Name.Equals(targetTypeName) &&
        element.get_Parameter(BuiltInParameter.SYMBOL_FAMILY_NAME_PARAM).
        AsString().Equals(targetFamilyName)
        select element;

    // Put the result as a list of element fo accessibility.

    IList<Element> elems = targetElems.ToList();

    // Return the result.

    if (elems.Count > 0)
    {
      return elems[0];
    }

    return null;
  }
}

这篇文章与本博中的这个文章有些类似。不过这里修改的是参数值类型不一样，而且是针对管道类型。

在Revit中，如何编程创建新类型（如窗户或墙） http://blog.csdn.net/joexiongjin/article/details/6191299