ARCEngine 开发，CAD数据操作
题记：数据转换过程中总是存在着数据丢失和转换不完美的地方，特别是异构数据。打开CAD数据
打开CAD数据的方法比较多，下面简单列举一些来源于其他博客的方法：
IWorkspaceFactory pWorkspaceFactory;
IFeatureWorkspace pFeatureWorkspace;
IFeatureLayer pFeatureLayer;
IFeatureDataset pFeatureDataset;
//打开CAD数据集
pWorkspaceFactory = new CadWorkspaceFactoryClass();
pFeatureWorkspace = (IFeatureWorkspace)pWorkspaceFactory.OpenFromFile(directoryPath, 0);
//打开一个要素集
pFeatureDataset = pFeatureWorkspace.OpenFeatureDataset(fileName);
//IFeaturClassContainer可以管理IFeatureDataset中的每个要素类
IFeatureClassContainer pFeatureClassContainer = (IFeatureClassContainer)pFeatureDataset;
//对CAD文件中的要素进行遍历处理
for (int i = 0; i < pFeatureClassContainer.ClassCount - 1; i++)
{
IFeatureClass pFeatureClass = pFeatureClassContainer.get_Class(i);
if (pFeatureClass.FeatureType == esriFeatureType.esriFTAnnotation)
{
//如果是注记，则添加注记层
pFeatureLayer = new CadAnnotationLayerClass();
}
else//如果是点、线、面，则添加要素层
{
pFeatureLayer = new FeatureLayerClass();<span style="font-family: Arial, Helvetica, sans-serif;"> }</span><pre code_snippet_id="1902356" snippet_file_name="blog_20160927_3_4611722" name="code" class="csharp">pFeatureLayer.Name = pFeatureClass.AliasName;
pFeatureLayer.FeatureClass = pFeatureClass;
this.axmc_Main.Map.AddLayer(pFeatureLayer); 属性处理
使用ARCGIS 打开CAD的属性都包含以下信息
通过CADWorkspaceFactory打开的属性包含以下属性值
Ann：（55个字段）
OBJECTID Entity Handle
Owner Layer
LyrFrzn LyrLock LyrOn
LyrVPFrzn
LyrHandle Color EntColor LyrColor BlkColor Linetype EntLinetyp LyrLnType BlkLinetyp Elevation Thickness LineWt
EntLineWt LyrLineWt BlkLineWt RefName LTScale ExtX ExtY ExtZ DocName DocPath DocType DocVer ScaleX ScaleY ScaleZ
Style FontID
Text Height TxtAngle TxtWidth TxtOblique TxtGenType TxtJust VertAlign TxtFont TxtBoxHt TxtBoxWd TxtRefWd TxtAttach
TxtDir LnSpace SpaceFct TxtMemo
Point：（36个字段）
OBJECTID EntityHandle LayerLyrFrzn LyrLockLyrOn LyrVPFrznLyrHandle ColorEntColor LyrColorBlkColor LinetypeEntLinetyp LyrLnTypeBlkLinetyp ElevationThickness LineWtEntLineWt LyrLineWtBlkLineWt
RefNameLTScale AngleExtX ExtYExtZ DocNameDocPath DocTypeDocVer ScaleXScaleY ScaleZ
Line（33个字段）
OBJECTID EntityHandle LayerLyrFrzn LyrLockLyrOn LyrVPFrznLyrHandle ColorEntColor LyrColorBlkColor LinetypeEntLinetyp LyrLnTypeBlkLinetyp ElevationThickness LineWtEntLineWt LyrLineWtBlkLineWt
RefNameLTScale ExtXExtY ExtZDocName DocPathDocType DocVerShape_STLe
Polygon（34个字段）
OBJECTID EntityHandle LayerLyrFrzn LyrLockLyrOn LyrVPFrznLyrHandle ColorEntColor LyrColorBlkColor LinetypeEntLinetyp LyrLnTypeBlkLinetyp ElevationThickness LineWtEntLineWt LyrLineWtBlkLineWt
RefNameLTScale ExtXExtY ExtZDocName DocPathDocType DocVerShape_STAr Shape_STLe
转载自：https://blog.csdn.net/wujianyouhun/article/details/52677726
