using System;
using Tekla.Structures.Drawing;
using Tekla.Structures.Model;

DrawingHandler MyDrawingHandler = new DrawingHandler();
            if (MyDrawingHandler.GetConnectionStatus())
            {
                //获取图纸列表选中的图纸
                DrawingEnumerator SelectedDrawings = MyDrawingHandler.GetDrawingSelector().GetSelected();

                while (SelectedDrawings.MoveNext())
                {
                    SelectedDrawings.Current.Delete();//删除图纸
                }
            }