Revit二次开发之“通过新建族来修改族参数”

有些参数需要新建一个族，在新建的时候设置参数，而不能直接修改。

[Transaction(TransactionMode.Manual)]
[Regeneration(RegenerationOption.Manual)]
//[Journaling(JournalingMode.NoCommandData)]
public class NewFamily : IExternalCommand
{
    //毫米到英寸，单位换算
    public double mmToFeet(double val) { return val / 304.8; }
    //通过族名称，族类型，从过滤器中找到指定的类型。
    public Element FindElementType(Document doc, Type targetType, string familyName, string typeName, BuiltInCategory catagory)
    {
        IList<Element> elements = FindSpecialElements(doc, targetType, catagory);

        Element elem = null;
        foreach (Element e in elements)
        {
            if (e.Name.Equals(typeName) &&
                e.get_Parameter(BuiltInParameter.SYMBOL_FAMILY_NAME_PARAM).AsString().Equals(familyName))
            {
                elem = e;
                break;
            }
        }

        return elem;
    }
    //过滤
    //FindSpecialElements(doc, typeof(FamilySymbol), BuiltInCategory.OST_Doors);
    public IList<Element> FindSpecialElements(Document doc, Type targetType, BuiltInCategory catagory)
    {
        FilteredElementCollector collector = new FilteredElementCollector(doc);
        collector.OfClass(targetType);
        if (collector != null)
            collector.OfCategory(catagory);
        IList<Element> elements = collector.ToElements();

        return elements;
    }
    public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
    {
        UIDocument uiDoc = commandData.Application.ActiveUIDocument;
        Autodesk.Revit.ApplicationServices.Application app = commandData.Application.Application;

        //
        HyRevit.Key.Press.Keys("DR");
        string family = "单开门";
        string type = "M0721";
        FamilySymbol fs = FindElementType(uiDoc.Document, typeof(FamilySymbol), family, type, BuiltInCategory.OST_Doors) as FamilySymbol;

        Family fy = fs.Family;
        Document familyDoc = uiDoc.Document.EditFamily(fy);
        if (null != familyDoc)
        {
            if (familyDoc.IsFamilyDocument)
            {
                FamilyManager familyManager = familyDoc.FamilyManager;
                if (null != familyManager)
                {
                    Transaction tr = new Transaction(familyDoc, "CreateDoorFamilyTransaction");
                    tr.Start();
                    SubTransaction subTransaction = new SubTransaction(familyDoc);
                    subTransaction.Start();

                    FamilyType newFamilyType = familyManager.NewType("新门1001");

                    FamilyParameter familyParam = familyManager.get_Parameter("Width");
                    if (null != familyParam)
                    {
                        familyManager.Set(familyParam, mmToFeet(Convert.ToDouble("500")));
                    }
                    familyParam = familyManager.get_Parameter("Height");
                    if (null != familyParam)
                    {
                        familyManager.Set(familyParam, mmToFeet(Convert.ToDouble("2000")));
                    }
                    familyDoc.LoadFamily(uiDoc.Document, new FamilyOptions());

                    subTransaction.Commit();
                    tr.Commit();
                    familyDoc.Close(false);
                    familyDoc.Dispose();
                }
            }
        }

        //进入命令，设置默认
        family = "单开门";
        type = "新门1001";
        FamilySymbol fsNew = FindElementType(uiDoc.Document, typeof(FamilySymbol), family, type, BuiltInCategory.OST_Doors) as FamilySymbol;
        uiDoc.PromptForFamilyInstancePlacement(fsNew);

        return Result.Succeeded;
    }
}

from:http://revit.5d6d.com/thread-978-1-4.html