using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Runtime;
namespace _01_LineD
{
public class Class1
{
[CommandMethod("LineDemo")]
public void LineDemo()
{
Line line1 = new Line();//声明一个直线对象
Point3d startPoint3D = new Point3d(100, 100, 0);//创建两个点
Point3d endPoint3D = new Point3d(100, 200, 0);
line1.StartPoint = startPoint3D;//设置属性
line1.EndPoint = endPoint3D;
//声明图形数据库对象
Document doc = Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
Line line2 = new Line(new Point3d(100, 200, 0), new Point3d(200, 200, 0));
Line line3 = new Line(new Point3d(200, 200, 0), new Point3d(200, 100, 0));
Line line4 = new Line(new Point3d(200, 100, 0), new Point3d(100, 100, 0));
//开启事务处理
using (Transaction trans = db.TransactionManager.StartTransaction())
{
BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId, OpenMode.ForRead);//打开块表
BlockTableRecord btr = (BlockTableRecord)trans.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite);//打开块表记录
btr.AppendEntity(line1);//加直线到块表记录
btr.AppendEntity(line2);//加直线到块表记录
btr.AppendEntity(line3);//加直线到块表记录
btr.AppendEntity(line4);//加直线到块表记录
trans.AddNewlyCreatedDBObject(line1, true);//更新数据
trans.AddNewlyCreatedDBObject(line2, true);//更新数据
trans.AddNewlyCreatedDBObject(line3, true);//更新数据
trans.AddNewlyCreatedDBObject(line4, true);//更新数据
trans.Commit();//提交事务
}
}
}
}