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GetElementIterator Method

Returns an element iterator to the elements passing the filters.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0)
Since: 2011

Syntax

C# 
public FilteredElementIterator GetElementIterator()
Visual Basic 
Public Function GetElementIterator As FilteredElementIterator
Visual C++ 
public:
FilteredElementIterator^ GetElementIterator()

Remarks

Calling this when you have an active iterator to this same collector will result in the first iterator being stopped by this call.

Examples

Copy C# 
FilteredElementCollector collector = new FilteredElementCollector(document);

// Apply a filter to get all pipes in the document
collector.OfClass(typeof(Autodesk.Revit.DB.Plumbing.Pipe));

// Get results as an element iterator and look for a pipe with
// a specific flow state
FilteredElementIterator elemItr = collector.GetElementIterator();
elemItr.Reset();
while (elemItr.MoveNext())
{
    Pipe pipe = elemItr.Current as Pipe;
    if (pipe.FlowState == PipeFlowState.LaminarState)
    {
        TaskDialog.Show("Revit", "Model has at least one pipe with Laminar flow state.");
        break;
    }
}
Copy VB.NET 
Dim collector As New FilteredElementCollector(document)

' Apply a filter to get all pipes in the document
collector.OfClass(GetType(Autodesk.Revit.DB.Plumbing.Pipe))

' Get results as an element iterator and look for a pipe with
' a specific flow state
Dim elemItr As FilteredElementIterator = collector.GetElementIterator()
elemItr.Reset()
While elemItr.MoveNext()
    Dim pipe As Pipe = TryCast(elemItr.Current, Pipe)
    If pipe.FlowState = PipeFlowState.LaminarState Then
        TaskDialog.Show("Revit", "Model has at least one pipe with Laminar flow state.")
        Exit While
    End If
End While

Exceptions

Exception Condition
Autodesk.Revit.Exceptions InvalidOperationException The collector does not have a filter applied. Extraction or iteration of elements is not permitted without a filter.

See Also