010集——关于图层（ 新建图层、获取图层名）（CAD—C#二次开发入门）

 新建图层，指定图层颜色、获取所有图层名的操作：

如图所示，通过代码已将所有图层放入一个字符串类型的list列表中。

代码如下:

using AcTools;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Runtime;
using System;
using System.Collections.Generic;
using System.Linq;
//using System.Windows.Forms;

namespace Acdemo
{
    public  class Acdemo
    {
        public static void SendACommandToAutoCAD(string message)
        {
            Document acDoc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;

            // 绘制一个圆并缩放图形    Draws a circle and zooms to the extents or 
            // limits of the drawing
            Autodesk.AutoCAD.ApplicationServices.Application.ShowAlertDialog(message);
            Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor.WriteMessage(message);
            acDoc.SendStringToExecute("._circle 2,2,0 4 ", true, false, false);
            //SendKeys.SendWait("^{A}");
            // SendKeys.SendWait("{ESC}");
            acDoc.SendStringToExecute("._zoom _e ", true, false, false);

            //for (int i = 0; i < 1000; i++)
            //{
            //    SendKeys.SendWait("{ESC}");
            //}
        }

        public static List<string> Getlayername()
        {
            List<string> lname = new List<string>();
            // 获得当前文