using Autodesk.AutoCAD.DatabaseServices;

using Autodesk.AutoCAD.Geometry;

using Autodesk.AutoCAD.Runtime;

namespace Texts

{

    public class Texts

    {

        [CommandMethod("AddText")]

        public void AddText()

        {

            Database db=HostApplicationServices.WorkingDatabase;

            using (Transaction trans=db.TransactionManager.StartTransaction())

            {

                // 以只读方式打开块表  

                BlockTable acBlkTbl;

               acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId, OpenMode.ForRead) as BlockTable;      

                // 以写方式打开模型空间块表记录                  BlockTableRecord acBlkTblRec;

               acBlkTblRec = acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace],

                                      OpenMode.ForWrite) as BlockTableRecord;

                DBText firsttext=new DBText(); // 创建第一个单行文字

           firsttext.Position = new Point3d();//文字位置为原点

           firsttext.Height = 5;//文字高度

           //设置文字内容

            firsttext.TextString = “This is firsttext！”;

                //设置文字的水平对齐方式为居中

            firsttext.HorizontalMode = TextHorizontalMode.TextCenter;

                //设置文字的垂直对齐方式为居中

            firsttext.VerticalMode = TextVerticalMode.TextVerticalMid;

                //设置文字的对齐点

            firsttext.AlignmentPoint = firsttext.Position;

                acBlkTblRec.AppendEntity(firsttext);

                acTrans.AddNewlyCreatedDBObject(firsttext, true);

                trans.Commit();//提交事务处理

          }

        }

    }

}