TopExtension Property
The top extension option.

Namespace: Autodesk.Revit.DB.Structure
Assembly: RevitAPI (in RevitAPI.dll) Version: 16.0.0.0 (16.0.0.0)
Since:  2015

Syntax

C#
public StickElementExtension TopExtension { get; set; }
Visual Basic
Public Property TopExtension As StickElementExtension
	Get
	Set
Visual C++
public:
property StickElementExtension TopExtension {
	StickElementExtension get ();
	void set (StickElementExtension value);
}

Examples

CopyC#
/// <summary>
/// Change the top extension for the column to Reference Level
/// </summary>
public void ChangeColumnTopExtension(FamilyInstance column)
{
    AnalyticalModelColumn amc = column.GetAnalyticalModel() as AnalyticalModelColumn;
    if (amc != null)
    {
        using (Transaction tran = new Transaction(column.Document, "Change Top Extension"))
        {
            tran.Start();

            StickElementExtension orgTopExt = amc.TopExtension;
            StickElementExtension newTopExt = StickElementExtension.ReferenceLevel;
            amc.TopExtension = newTopExt;

            TaskDialog.Show("AnalyticalModelColumn", "AnalyticalModelColumn ID: " + amc.Id + "; \nOriginal TopExtension value was: " + orgTopExt + "; \nNew TopExtension value: " + newTopExt);

            tran.Commit();
        }
    }
}

Exceptions

ExceptionCondition
Autodesk.Revit.Exceptions..::..ArgumentOutOfRangeException When setting this property: A value passed for an enumeration argument is not a member of that enumeration

See Also

P:Autodesk.Revit.DB.Structure.AnalyticalModelColumn.TopExtension