OperationMergeMarks Method

public static bool MergeMarks(
	IList<MarkBase> marks,
	out List<MarkBase> mergedMarks
)

Public Shared Function MergeMarks ( 
	marks As IList(Of MarkBase),
	<OutAttribute> ByRef mergedMarks As List(Of MarkBase)
) As Boolean

using System;
using System.Collections.Generic;
using Tekla.Structures.Geometry3d;
using Tekla.Structures.Drawing;
using TSD = Tekla.Structures.Drawing;

class Example
{
    public void MergeMarksTest()
    {
        DrawingHandler drawingHandler = new DrawingHandler();

        var drawing = drawingHandler.GetActiveDrawing();
        if (drawing != null)
        {
            List<MarkBase> markstoBeMerged = new List<MarkBase>();

            // pick marks to be merged
            ViewBase pickedView;
            DrawingObject mark;
            var picker = drawingHandler.GetPicker();
            bool continuePicking = true;
            while (continuePicking)
            {
                try
                {
                    var message = "Pick mark " + (markstoBeMerged.Count + 1).ToString() + " to be merged. Press Esc to finish..";
                    picker.PickObject(message, out mark, out pickedView);
                    if (mark == null || pickedView == null || !(mark is Tekla.Structures.Drawing.MarkBase))
                        continuePicking = false;
                    else
                        markstoBeMerged.Add(mark as MarkBase);
                }
                catch
                {
                    continuePicking = false;
                }
            }

            if (markstoBeMerged.Count > 1)
            {
                List<MarkBase> mergedMarks = new List<MarkBase>();
                TSD.Operations.Operation.MergeMarks(markstoBeMerged, out mergedMarks);
                if (mergedMarks.Count > 0)
                {
                    drawing.CommitChanges();
                    drawingHandler.SaveActiveDrawing();
                    Console.WriteLine("Merge operation successfull with " + mergedMarks.Count.ToString() + " merged marks..");
                }
                else
                {
                    Console.WriteLine("Merge operation failed..");
                }
            }
        }
    }
}