使用PromptForFamilyInstancePlacement的Revit API放置详细信息组件

Question

I'm trying to place a detail component using PromptForFamilyInstancePlacement , but am having trouble properly defining the FamilySymbol .

Examples that I have found show how to to this using a FilteredElementCollector , but I am trying to define the FamilySymbol by name.

Answer 1

Try this code (requires System.Linq) and .NET4

FamilySymbol symbol = GetElements<FamilySymbol>(commandData.Application.ActiveUIDocument.Document)
                          .Where(item => item.Name == "NameYouWant")
                          .First();
commandData.Application.ActiveUIDocument.PromptForFamilyInstancePlacement(symbol);


    /// <summary>
    /// Get the collection of elements of the specified type.
    /// <para>The specified type must derive from Element, or you can use Element but you get everything :)</para>
    /// </summary>
    /// <typeparam name="T">The type of element to get</typeparam>
    /// <returns>The list of elements of the specified type</returns>
    public IEnumerable<T> GetElements<T>(Document document) where T : Element
    {
        FilteredElementCollector collector = new FilteredElementCollector(document);
        collector.OfClass(typeof(T));
        return collector.Cast<T>();
    }

Answer 2

Have you already loaded the Family document into the project that you are working in? If not then you can load the family into the project using Document.LoadFamilySymbol or Document.LoadFamily . Otherwise, to find the family symbol that you are looking for, you can use something similar to the code below:

UIApplication application = commandData.Application;
UIDocument uiDocument = application.ActiveUIDocument;
Document document = application.ActiveUIDocument.Document;

FilteredElementCollector familyCollector = new FilteredElementCollector(document);
familyCollector.OfClass(typeof(FamilySymbol));

FamilySymbol familySymbolToFind = null;

foreach (FamilySymbol familySymbol in familyCollector)
{
  //To search by FamilySymbol name
  if (familySymbol.Name == "[Name of FamilySymbol to find]")
    familySymbolToFind = familySymbol;
  //To search by Family name
  else if (familySymbol.Family.Name = "[Name of Family to find]")
    familySymbolToFind = familySymbol;
}

uiDocument.PromptForFamilyInstancePlacement(familySymbolToFind);

Answer 3

They both work, even in Revit 2017. (On the second solution, the else if line needs a == instead of an = .)

In the second solution, I used this to make sure I had the right family name and family symbol name:

foreach (FamilySymbol familySymbol in familyCollector)
{
  if (familySymbol.Name == "Put your Family Name here" && familySymbol.Family.Name == "Put your Family Symbol Name here")
                        familySymbolToFind = familySymbol;
}