AutoCAD块属性提取

最新推荐文章于 2024-07-24 23:49:50 发布

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最新推荐文章于 2024-07-24 23:49:50 发布

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原文链接：http://www.cnblogs.com/gaoshoubuduo/archive/2011/03/24/1994066.html

摘自http://www.cnblogs.com/SmartSoft/archive/2007/12/09/935184.html

using System;
using AutoCAD = Autodesk.AutoCAD.Interop;
using System.Runtime.InteropServices ;
using dbx = Autodesk.AutoCAD.Interop.Common;
namespace SmartSoft.ACAD
{
/// <summary>
/// 读取AutoCAD属性信息
/// </summary>
public class AutoCADConnector:IDisposable
{
    private AutoCAD.AcadApplication _Application;
    private bool _Initialized;
    private bool _Disposed;
#region 类初始化及析构操作
   /// <summary>
   /// 类初始化，试图获取一个正在运行的AutoCAD实例，
   /// 如果没有则新起动一个实例。
   /// </summary>
   public AutoCADConnector()
  {
    try
   {
     // 取得一个正在运行的AUTOCAD实例
     this ._Application = (AutoCAD.AcadApplication)Marshal.GetActiveObject( " AutoCAD.Application.17 " );
   } // end of try
    catch
   {
     try
    {
      // 建立一个新的AUTOCAD实例，并标识已经建立成功。
                    _Application = new AutoCAD.AcadApplicationClass();
     _Initialized = true ;
    }
     catch
    {
      throw new Exception ( " 无法起动AutoCAD应用程序，确认已经安装 " );
    }
   } // end of catch
  } // end of AutoCADConnector

   ~ AutoCADConnector()
  {
   Dispose( false );
  }
   public void Dispose()
  {
   Dispose( true );
   GC.SuppressFinalize( this );
  }
   protected virtual    void Dispose( bool disposing)
  {
    if ( ! this ._Disposed && this ._Initialized )
   {
     // 如果建立了AUTOCAD的实列，调用QUIT方法以避免内存漏洞
     this ._Application.ActiveDocument.Close ( false , "" );
     this ._Application.Quit();
     this ._Disposed = true ;
   }
  }
#endregion

#region 公共用户接口属性
   /// <summary>
   /// 取得当前类所获得的AUTOCAD实例
   /// </summary>
         public AutoCAD.AcadApplication Application
  {
    get
   {
     return _Application;
   }
  } // end of Application
#endregion

#region 公共用户接口方法
   /// <summary>
   /// 根据给定的文件名以AxDbDocument类型返回该文档
   /// </summary>
   public dbx.AxDbDocument GetThisDrawing( string FileName, string PassWord)
  {
   ACAD.AutoCADConnector Connector = new AutoCADConnector();
    // 这是AutoCAD2004的Programe ID
    string programeID = " ObjectDBX.AxDbDocument.17 " ;
            AutoCAD.AcadApplication AcadApp = Connector.Application;
   dbx.AxDbDocument dbxDoc;
   dbxDoc = (dbx.AxDbDocument)AcadApp.GetInterfaceObject(programeID);
    try
   {
     if (System.IO.File.Exists (FileName) == false ) throw new Exception ( " 文件不存在。 " );

    dbxDoc.Open(FileName,PassWord);
   } // end of try
    catch (Exception  e)
   {
    System.Windows.Forms.MessageBox.Show(e.Message );
    dbxDoc = null ;
   }
    return dbxDoc;
  } // end of function GetThisDrawing

   /// <summary>
   /// 根据当前文档和块名取得当前块的引用
   /// </summary>
   public dbx.AcadBlockReference GetBlockReference(dbx.AxDbDocument  thisDrawing, string blkName)
  {
   dbx.AcadBlockReference blkRef = null ;
             bool found = false ;
    try
   {
     foreach (dbx.AcadEntity entity in thisDrawing.ModelSpace  )
    {
      if (entity.EntityName == " AcDbBlockReference " )
     {
      blkRef = (dbx.AcadBlockReference)entity;
                         // System.Windows.Forms.MessageBox.Show(blkRef.Name);
       if (blkRef.Name.ToLower() == blkName.ToLower() )
      {
                            found = true ;
        break ;
      }
     } // end of entity.EntityName=="AcDbBlockReference"
    } // end of foreach thisDrawing.ModelSpace
   } // end of try
    catch (Exception  e)
   {
    System.Windows.Forms.MessageBox.Show ( " 图形中有未知的错误，格式不正确或图形数据库需要修愎。系统错误提示： " + e.Message , " 信息 " ,System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Warning);
    thisDrawing = null ;
   } // end of catch
             if ( ! found) blkRef = null ;

    return blkRef;
  } // end of function GetBlockReference
   /// <summary>
   /// 根据给定的块引用(dbx.AcadBlockReference)和属性名返回属性值
   /// </summary>
   public object GetValueByAttributeName(dbx.AcadBlockReference  blkRef, string AttributeName)
  {
    object [] Atts = ( object [])blkRef.GetAttributes();
    object attValue = null ;
    for ( int i = 0 ;i < Atts.Length;i ++ )
   {
    dbx.AcadAttributeReference attRef;
    attRef = (dbx.AcadAttributeReference)Atts[i];
     if (attRef.TagString == AttributeName)
    {
     attValue = attRef.TextString ;
      break ;
    }
   } // end of for i
    return attValue;
  } // end of function
#endregion
} // end of class CAutoCADConnector
} // end of namespace AutoCAD

转载于:https://www.cnblogs.com/gaoshoubuduo/archive/2011/03/24/1994066.html