第一行默认是标题，可设置行【RowType】进行设置类型

            Document doc = Application.DocumentManager.MdiActiveDocument;using (Transaction tr = doc.TransactionManager.StartOpenCloseTransaction()){BlockTable bt = tr.GetObject(doc.Database.BlockTableId, OpenMode.ForRead) as BlockTable;BlockTableRecord btr = tr.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord;Table table = new Table();//设置表格大小（必须先创建表格类型再设置表格属性）table.SetSize(5, 3);//设置行高table.SetRowHeight(50);table.SetColumnWidth(200);// 设置表格的行数和列数// 设置表格的位置和大小table.Position = new Autodesk.AutoCAD.Geometry.Point3d(0, 0, 0);//从（2，0）单元格合并至（2，1）单元格，行列下表从0开始var cellRange = CellRange.Create(table, 2, 0, 2, 1);table.MergeCells(cellRange);btr.AppendEntity(table);tr.AddNewlyCreatedDBObject(table,true);tr.Commit();}