创建注记图层要素

转载

mb5fe94870638be 2017-01-08 21:51:00

文章标签 图层 文章分类 代码人生

创建完文本注记TextElement后，可以选择以屏幕注记的形式加到屏幕上，也可以通过下面的方式转为注记图层要素：

IFeatureClass annocls = 获取注记图层  
IDataset pDataset = annocls as IDataset;  
ITransactions pTransactions = pDataset.Workspace as ITransactions;  
pTransactions.StartTransaction();  
IFDOGraphicsLayerFactory pFDOGLFactory = new FDOGraphicsLayerFactoryClass();  
ILayer tmpLayer = pFDOGLFactory.OpenGraphicsLayer(pDataset.Workspace as IFeatureWorkspace, annocls.FeatureDataset, pDataset.Name);  
IFDOGraphicsLayer pFDOGLayer = tmpLayer as IFDOGraphicsLayer;  
IElementCollection pElementColl = new ElementCollectionClass();  
pFDOGLayer.BeginAddElements();  
////每新增100个提交下，最后再提交下。防止过多转换失败  
if ((pElementColl != null) && (pElementColl.Count == 100))  
{  
    pFDOGLayer.DoAddElements(pElementColl, 0);  
    pFDOGLayer.EndAddElements();  
    pElementColl.Clear();  
    pTransactions.CommitTransaction();  
    pTransactions.StartTransaction();  
    pFDOGLayer.BeginAddElements();  
}  
if (pElementColl.Count > 0)  
pFDOGLayer.DoAddElements(pElementColl, 0);  
pFDOGLayer.EndAddElements();  
pElementColl.Clear();  
pTransactions.CommitTransaction();