学步园

 将图层导入ＳＤＥ有两种情况，一种是直接导入到ＳＤＥ的根目录下，一种是ＳＤＥ中用户建立了要素集(Dataset)，然后往某个要素集中导入数据

第一种情况：直接往ＳＤＥ根目录下导入图层：

bool impLayerByName(IName lName,IWorkspace inWorkspace,IWorkspace outWorkspace)<br /> {<br /> try<br /> {<br /> //Open input Featureclass to get field definitions.<br /> IFeatureClass inFeatureClass = (IFeatureClass)lName.Open();<br /> IFeatureClassName inFeatureClassName = (IFeatureClassName)lName;<br /> // Set out dataset and feature class names.<br /> IFeatureClassName outFeatureClassName = new FeatureClassNameClass();<br /> IDatasetName outDatasetName = (IDatasetName)outFeatureClassName;<br /> IDataset outWorkspaceDataset = (IDataset)outWorkspace;<br /> IWorkspaceName outWorkspaceName = (IWorkspaceName)outWorkspaceDataset.FullName;<br /> outDatasetName.WorkspaceName = outWorkspaceName;<br /> //string outFullName = ((IDatasetName)lName).Name;<br /> //string outFileName = outFullName.Substring(outFullName.LastIndexOf(".") + 1);<br /> outDatasetName.Name = "SDE."+((IDatasetName)lName).Name;<br /> //Validate the field names.<br /> IFieldChecker fieldChecker = new FieldCheckerClass();<br /> IFields outFeatureClassFields;<br /> IFields inFeatureClassFields = inFeatureClass.Fields;<br /> IEnumFieldError enumFieldError;<br /> fieldChecker.InputWorkspace = inWorkspace;<br /> fieldChecker.ValidateWorkspace = outWorkspace;<br /> // Validate the fields.<br /> fieldChecker.Validate(inFeatureClassFields,out enumFieldError,out outFeatureClassFields);<br /> // Set up the geometry definition.<br /> IField geometryField;<br /> geometryField = outFeatureClassFields.get_Field(outFeatureClassFields.FindField(inFeatureClass.ShapeFieldName));<br /> // Get the geometry field's geometry definition.<br /> IGeometryDef geometryDef = geometryField.GeometryDef;<br /> //Set up the IQueryFilter to convert all the features by leaving a blank WhereClause<br /> QueryFilter qf = new QueryFilterClass();<br /> qf.WhereClause = "";<br /> //Load the feature class<br /> IFeatureDataConverter fctofc = new FeatureDataConverterClass();<br /> IEnumInvalidObject enumErrors = fctofc.ConvertFeatureClass(inFeatureClassName,qf,null,outFeatureClassName,geometryDef,outFeatureClassFields,"",1000,0);<br /> return true;<br /> }<br /> catch (Exception ex)<br /> {<br /> MessageBox.Show(ex.Message);<br /> return false;<br /> }<br /> }<br />

其中，lName是源图层的IName，inWorkspace是源图层所在的工作空间，outWorkspace是要导出到的工作空间，这段代码默认将导出后的图层命名为与源图层一样

第二种情况：往ＳＤＥ中某个要素集导入图层

bool impLayerByNameIntoDataset(IName lName,IWorkspace inWorkspace,IFeatureDataset featureDataset)<br /> {<br /> try<br /> {<br /> //IFeatureClassDescription fcDesc = new FeatureClassDescriptionClass();<br /> //IObjectClassDescription ocDesc = (IObjectClassDescription)fcDesc;<br /> //Open input Featureclass to get field definitions.<br /> IFeatureClass inFeatureClass = (IFeatureClass)lName.Open();<br /> IFeatureClassName inFeatureClassName = (IFeatureClassName)lName;<br /> // Set out dataset and feature class names.<br /> IFeatureClassName outFeatureClassName = new FeatureClassNameClass();<br /> IDatasetName outDatasetName = (IDatasetName)outFeatureClassName;<br /> IDataset outWorkspaceDataset = (IDataset)featureDataset.Workspace;<br /> IWorkspaceName outWorkspaceName = (IWorkspaceName)outWorkspaceDataset.FullName;<br /> outDatasetName.WorkspaceName = outWorkspaceName;<br /> outDatasetName.Name = "SDE." + ((IDatasetName)lName).Name;<br /> //Validate the field names.<br /> IFieldChecker fieldChecker = new FieldCheckerClass();<br /> IFields outFeatureClassFields;<br /> IFields inFeatureClassFields = inFeatureClass.Fields;<br /> IEnumFieldError enumFieldError;<br /> fieldChecker.InputWorkspace = inWorkspace;<br /> fieldChecker.ValidateWorkspace = featureDataset.Workspace;</p> <p> // Validate the fields.<br /> fieldChecker.Validate(inFeatureClassFields,out enumFieldError,out outFeatureClassFields);<br /> //featureDataset.CreateFeatureClass("SDE." + ((IDatasetName)lName).Name,outFeatureClassFields,ocDesc.InstanceCLSID,ocDesc.ClassExtensionCLSID,esriFeatureType.esriFTSimple,fcDesc.ShapeFieldName,"");<br /> // Set up the geometry definition.<br /> IField geometryField;<br /> geometryField = outFeatureClassFields.get_Field(outFeatureClassFields.FindField(inFeatureClass.ShapeFieldName));<br /> // Get the geometry field's geometry definition.<br /> IGeometryDef geometryDef = geometryField.GeometryDef;<br /> //Set up the IQueryFilter to convert all the features by leaving a blank WhereClause<br /> IQueryFilter qf = new QueryFilterClass();<br /> qf.WhereClause = "";<br /> //Load the feature class<br /> IFeatureDataConverter fctofc = new FeatureDataConverterClass();<br /> IEnumInvalidObject enumErrors = fctofc.ConvertFeatureClass(inFeatureClassName,qf,(IFeatureDatasetName)featureDataset.FullName,outFeatureClassName,geometryDef,outFeatureClassFields,"",1000,0);</p> <p> return true;<br /> }<br /> catch (Exception ex)<br /> {<br /> MessageBox.Show(ex.Message);<br /> return false;<br /> }</p> <p> }<br />

其中，lName是源图层的IName，inWorkspace是源图层所在的工作空间，featureDataset是目标数据集,这段代码默认将导出后的图层命名为与源图层一样

附：获取SDE中数据集(Dataset)的方法：

//在SDE里查找名称为datasetName的Dataset<br /> IFeatureDataset outSet = null;<br /> IEnumDatasetName idNames = outSpace.get_DatasetNames(esriDatasetType.esriDTFeatureDataset);<br /> IDatasetName idNames.Reset();<br /> fNameBase = idNames.Next();<br /> while (fNameBase != null)<br /> {<br /> if(fNameBase.Name == datasetName) outSet = (IFeatureDataset)((IName)fNameBase).Open();<br /> fNameBase = idNames.Next();<br /> }

其中outSpace为已经打开的SDE工作空间