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