//  定义一个构造选择集对象。

        MxDrawSelectionSet ss = new MxDrawSelectionSet();        

        // 选择图上所有对象.

        ss.AllSelect();        

        for(int i = 0; i < ss.Count;i++)

        {            

        // 遍历到一个对象。            

        MxDrawEntity ent = (MxDrawEntity) ss.Item(i);             

        if (ent is MxDrawDimension)

             {                 

             // 如果是一个标注对象.

                 MxDrawDimension dim = (MxDrawDimension)ent;                 

                 // 得到标注对象文本.

                 String sTxt = dim.DimensionText;                 

                 if(sTxt.Length == 0)

                 {                     

                 // 如果文本为空，表示，标注文字是自动生成的

                     // 打碎标注对象，得到里面的文字对象.

                    MxDrawResbuf ret = dim.GetProp("ExplodeEx");                    

                    for(int j = 0; j < ret.Count;j++)

                    {

                        MxDrawMcDbObject obj = ret.AtObject(i);                        

                        if(obj == null)                            

                        continue;                     

                        if(obj is MxDrawMText)

                        {                            

                        // 该对象是个多行文本

                            // 取到文字对象，得到文字符串.

                            MxDrawMText txt = (MxDrawMText)obj;

                            sTxt = txt.Contents;                            

                            break;

                        }                        

                        else if(obj is MxDrawText)

                        {                            

                        // 该对象是个单行文本                             

                        MxDrawText txt = (MxDrawText)obj;

                            sTxt = txt.TextString;                            

                            break;

                        }

                    }

                 }                 

                 // 显示得到文字内容

                 MessageBox.Show(sTxt);                 

                 // 显示对象的线型                 

                 MessageBox.Show(ent.LineType);

             }

        }