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GetDefaultFamilyTypeId Method

Gets the default family type id with the given family category id.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 22.0.0.0 (22.1.0.0)
Since: 2015

Syntax

C# 
public ElementId GetDefaultFamilyTypeId(
	ElementId familyCategoryId
)
Visual Basic 
Public Function GetDefaultFamilyTypeId ( _
	familyCategoryId As ElementId _
) As ElementId
Visual C++ 
public:
ElementId^ GetDefaultFamilyTypeId(
	ElementId^ familyCategoryId
)

Parameters

familyCategoryId
Type: Autodesk.Revit.DB ElementId
The family category id.

Return Value

The default family type id.

Examples

Copy C# 
private void AssignDefaultTypeToColumn(Document document, FamilyInstance column)
{
    ElementId defaultTypeId = document.GetDefaultFamilyTypeId(new ElementId(BuiltInCategory.OST_StructuralColumns));

    if (defaultTypeId != ElementId.InvalidElementId)
    {
        FamilySymbol defaultType = document.GetElement(defaultTypeId) as FamilySymbol;
        if (defaultType != null)
        {
            column.Symbol = defaultType;
        }
    }
}
Copy VB.NET 
Private Sub AssignDefaultTypeToColumn(document As Document, column As FamilyInstance)
   Dim defaultTypeId As ElementId = document.GetDefaultFamilyTypeId(New ElementId(BuiltInCategory.OST_StructuralColumns))

   If defaultTypeId <> ElementId.InvalidElementId Then
      Dim defaultType As FamilySymbol = TryCast(document.GetElement(defaultTypeId), FamilySymbol)
      If defaultType IsNot Nothing Then
         column.Symbol = defaultType
      End If
   End If
End Sub

Exceptions

Exception Condition
Autodesk.Revit.Exceptions ArgumentNullException A non-optional argument was null

See Also