| ____这是我以前写过的一篇文章，也是SmartSoft中用到的，作为SmartSoft专题的一部分转贴到这里，与大家共享。此类实现AutoCAD块属性提取功能，在VS.Net2003(2005)+AutoCAD2004(2007)下调试通过。 | ||||
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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 |
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