标签：style blog http color os io 数据 ar
最近利用arcgis engine开发一款用于审核软件，需要先进行图形库的建立，还有些原始数据经过一些处理形成需要的数据。
代码实现的过程中发现数据进行过处理以后，数据量比较大，几万条的Feature一条条写入sde库速度让人无法忍受。然后在网上查了不少资料，发现多数类似于shape导入sde的时候都是用游标一条条插入的。但是也找到了一个方法，虽然也需要一些时间，但是总体比游标快太多了，记录在此。
1 /// <summary> 2 /// 图层导入数据集 3 /// </summary> 4 /// <param name="lName">源图层的IName</param> 5 /// <param name="inWorkspace">源图层所在的工作空间</param> 6 /// <param name="featureDataset">目标数据集</param> 7 /// <returns>返回导入成功(true)，失败(false)</returns> 8 private bool ImportLayerIntoDataset(IName lName, IWorkspace inWorkspace, IFeatureDataset featureDataset, string strOutFeatureName) 9 { 10 try 11 { 12 IFeatureClass inFeatureClass = (IFeatureClass)lName.Open(); 13 IFeatureClassName inFeatureClassName = (IFeatureClassName)lName; 14 15 IFeatureClassName outFeatureClassName = new FeatureClassNameClass(); 16 IDatasetName outDatasetName = (IDatasetName)outFeatureClassName; 17 IDataset outWorkspaceDataset = (IDataset)featureDataset.Workspace; 18 IWorkspaceName outWorkspaceName = (IWorkspaceName)outWorkspaceDataset.FullName; 19 outDatasetName.WorkspaceName = outWorkspaceName; 20 outDatasetName.Name = "SDE." + strOutFeatureName; 21 22 IFieldChecker fieldChecker = new FieldCheckerClass(); 23 IFields outFeatureClassFields; 24 IFields inFeatureClassFields = inFeatureClass.Fields; 25 IEnumFieldError enumFieldError; 26 fieldChecker.InputWorkspace = inWorkspace; 27 fieldChecker.ValidateWorkspace = featureDataset.Workspace; 28 29 fieldChecker.Validate(inFeatureClassFields, out enumFieldError, out outFeatureClassFields); 30 IField geometryField; 31 geometryField = outFeatureClassFields.get_Field(outFeatureClassFields.FindField(inFeatureClass.ShapeFieldName)); 32 IGeometryDef geometryDef = geometryField.GeometryDef; 33 IQueryFilter qf = new QueryFilterClass(); 34 qf.WhereClause = ""; 35 IFeatureDataConverter fctofc = new FeatureDataConverterClass(); 36 IEnumInvalidObject enumErrors = fctofc.ConvertFeatureClass(inFeatureClassName, qf, (IFeatureDatasetName)featureDataset.FullName, outFeatureClassName, geometryDef, outFeatureClassFields, "", 1000, 0); 37 38 return true; 39 } 40 catch (Exception ex) 41 { 42 MessageBox.Show(ex.Message); 43 return false; 44 } 45 }
ConvertFeatureClass在文档中的解释为：Converts a featureClass to a Personal Geodatabase/Geodatabase featureClass.
1 IDataset pDataset = pFeatureClass as IDataset; 2 IName pName = pDataset.FullName; 3 4 IWorkspace pWorkspace = pDataset.Workspace;
通过IFeatureClass上述方式即可获得函数的参数。
另：由于做删除数据的时候，脑子秀逗了下，忘记解锁数据了，导致删除后图形能在图上显示，但是数据表里没有数据了。当时查找了各种删除数据的方式，主要也是游标的方式一条条的删除。但是看到有人介绍了好几种删除的方式，只记下了一种，也算是删除速度最快的一种。
1 string strSQL="delete from " + pFeatureClass.AliasName + " where XMBH = ‘" + strProjectID + "‘"; 2 IDataset pDataset = pFeatureClass as IDataset; 3 pDataset.Workspace.ExecuteSQL(strSQL);
-------记录GIS学习的小心得
arcgis engine删除数据及数据导入速度较快的方法,布布扣,bubuko.com
标签：style blog http color os io 数据 ar
原文地址：http://www.cnblogs.com/xjnn/p/3921474.html
