使用C#在ArcGIS中打开完整的CAD文件

 #region 一：整幅加载
            try
            {
                this.axMapCCAD.ActiveView.Clear();//清空当前视图
                OpenFileDialog xjCADOpenFileDialog = new OpenFileDialog();
                xjCADOpenFileDialog.Title = "打开CAD数据文件";
                xjCADOpenFileDialog.Filter = "CAD数据(*.dwg)|*.dwg";
                if (xjCADOpenFileDialog.ShowDialog() == DialogResult.OK)
                {
                    string xjCADFullPath = xjCADOpenFileDialog.FileName;//文件绝对路径
                    int xjIndex = xjCADFullPath.LastIndexOf("\\");
                    string xjCADFilePath = xjCADFullPath.Substring(0, xjIndex);//文件目录
                    string xjCADFileName = xjCADFullPath.Substring(xjIndex + 1);//文件名称
                    //打开CAD数据集
                    ESRI.ArcGIS.Geodatabase.IWorkspaceFactory xjCADWsF = new ESRI.ArcGIS.DataSourcesFile.CadWorkspaceFactoryClass();
                    ESRI.ArcGIS.Geodatabase.IWorkspace Workspace = xjCADWsF.OpenFromFile(xjCADFilePath, 0);
                    ESRI.ArcGIS.DataSourcesFile.ICadDrawingWorkspace dw = Workspace as ESRI.ArcGIS.DataSourcesFile.ICadDrawingWorkspace;
                    ESRI.ArcGIS.DataSourcesFile.ICadDrawingDataset ds = dw.OpenCadDrawingDataset(xjCADFileName);
                    //通过ICadLayer类，把上边得到的CAD数据局赋值给ICadLayer类对象的
                    //CadDrawingDataset属性
                    ESRI.ArcGIS.Carto.ICadLayer CadLayer = new ESRI.ArcGIS.Carto.CadLayerClass();
                    CadLayer.CadDrawingDataset = ds;
                    //利用MapControl加载CAD层
                    axMapCCAD.Map.AddLayer(CadLayer);
                    axMapCCAD.ActiveView.Refresh();
                }
            }
            catch (System.Exception ex)
            {
                MessageBox.Show(ex.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);