要素转要素
/// <summary>
/// 要素转要素
/// </summary>
/// <param name="sourceWorkspace">源要素的工作空间</param>
/// <param name="targetWorkspace">目标要素的工作空间</param>
/// <param name="nameOfSourceFeatureClass">源要素的名称</param>
/// <param name="nameOfTargetFeatureClass">目标要素的名称</param>
/// <param name="queryFilter">基于源数据的查询语句，可以设置为null</param>
/// <returns></returns>
public static bool IFeatureDataConverter_ConvertFeatureClass(IWorkspace sourceWorkspace, IWorkspace targetWorkspace,
string nameOfSourceFeatureClass, string nameOfTargetFeatureClass, IQueryFilter queryFilter)
{
//创建一个源数据的工作空间的name
IDataset sourceWorkspaceDataset = (IDataset)sourceWorkspace;
IWorkspaceName sourceWorkspaceName = (IWorkspaceName)sourceWorkspaceDataset.FullName;
//创建源数据Name作为转换参数
IFeatureClassName sourceFeatureClassName = new FeatureClassNameClass();
IDatasetName sourceDatasetName = (IDatasetName)sourceFeatureClassName;
sourceDatasetName.WorkspaceName = sourceWorkspaceName;
//这个参数不能乱填（shp文件就是文件名没后缀，FeatureClass或者FeatureDataset就是AliasName）
sourceDatasetName.Name = nameOfSourceFeatureClass;
//创建目标（导出）数据空间的name
IDataset targetWorkspaceDataset = (IDataset)targetWorkspace;
IWorkspaceName targetWorkspaceName = (IWorkspaceName)targetWorkspaceDataset.FullName;
//创建目标数据Name作为转换参数
IFeatureClassName targetFeatureClassName = new FeatureClassNameClass();
IDatasetName targetDatasetName = (IDatasetName)targetFeatureClassName;
targetDatasetName.WorkspaceName = targetWorkspaceName;
//这个命名也很重要，如果是mdb，那么这个命名在数据库中必须是本来不存在的（当然你可以先清空数据库）
targetDatasetName.Name = nameOfTargetFeatureClass;
//根据FetureClassName打开数据
IName sourceName = (IName)sourceFeatureClassName;
IFeatureClass sourceFeatureClass = (IFeatureClass)sourceName.Open();
//在两个不同的工作空间转换数据要检查字段的有效性
//一些检查有效性的参数
IFieldChecker fieldChecker = new FieldCheckerClass();
IFields targetFeatureClassFields;
IFields sourceFeatureClassFields = sourceFeatureClass.Fields;
IEnumFieldError enumFieldError;
//设置检查有效性的源数据工作空间
fieldChecker.InputWorkspace = sourceWorkspace;
fieldChecker.ValidateWorkspace = targetWorkspace;
//（这个函数没有返回值我不知道它如何确定有效性滴）
fieldChecker.Validate(sourceFeatureClassFields, out enumFieldError, out targetFeatureClassFields);
//通过输出字段循环找出几何字段
IField geometryField;
//遍历字段
for (int i = 0; i < targetFeatureClassFields.FieldCount; i++)
{
//找到定义几何要素类型的字段
if (targetFeatureClassFields.Field[i].Type != esriFieldType.esriFieldTypeGeometry) continue;
//获取当前字段
geometryField = targetFeatureClassFields.Field[i];
//编辑几何要素类型字段
IGeometryDef geometryDef = geometryField.GeometryDef;
IGeometryDefEdit targetFCGeoDefEdit = (IGeometryDefEdit)geometryDef;
//说实话，下面两行我实在不知道用处。。。参数也是看文档抄袭的
targetFCGeoDefEdit.GridCount_2 = 1;
targetFCGeoDefEdit.set_GridSize(0, 0);
//保证空间参考 SpatialReference_2属性字段才是可写的，SpatialReference属性只可读
targetFCGeoDefEdit.SpatialReference_2 = geometryField.GeometryDef.SpatialReference;
//开始转换
IFeatureDataConverter myConvert = new FeatureDataConverterClass();
myConvert.ConvertFeatureClass(sourceFeatureClassName, queryFilter, null, targetFeatureClassName, geometryDef, targetFeatureClassFields, "", 1000, 0);
return true;
}
return false;
}
要素集转要素集
/// <summary>
/// 要素集转要素集
/// </summary>
/// <param name="sourceWorkspace">源要素的工作空间</param>
/// <param name="targetWorkspace">目标要素的工作空间</param>
/// <param name="nameOfSourceFeatureDataset">源要素集的名称</param>
/// <param name="nameOfTargetFeatureDataset">目标要素集的名称</param>
public static void IFeatureDataConverter_ConvertFeatureDataset(IWorkspace sourceWorkspace, IWorkspace targetWorkspace, string nameOfSourceFeatureDataset, string nameOfTargetFeatureDataset)
{
//create source workspace name
IDataset sourceWorkspaceDataset = (IDataset)sourceWorkspace;
IWorkspaceName sourceWorkspaceName = (IWorkspaceName)sourceWorkspaceDataset.FullName;
//create source dataset name
IFeatureDatasetName sourceFeatureDatasetName = new FeatureDatasetNameClass();
IDatasetName sourceDatasetName = (IDatasetName)sourceFeatureDatasetName;
sourceDatasetName.WorkspaceName = sourceWorkspaceName;
sourceDatasetName.Name = nameOfSourceFeatureDataset;
//create target workspace name
IDataset targetWorkspaceDataset = (IDataset)targetWorkspace;
IWorkspaceName targetWorkspaceName = (IWorkspaceName)targetWorkspaceDataset.FullName;
//create target dataset name
IFeatureDatasetName targetFeatureDatasetName = new FeatureDatasetNameClass();
IDatasetName targetDatasetName = (IDatasetName)targetFeatureDatasetName;
targetDatasetName.WorkspaceName = targetWorkspaceName;
targetDatasetName.Name = nameOfTargetFeatureDataset;
//Convert feature dataset
IFeatureDataConverter featureDataConverter = new FeatureDataConverterClass();
featureDataConverter.ConvertFeatureDataset(sourceFeatureDatasetName, targetFeatureDatasetName, null, "", 1000, 0);
}
public static void GdbTransfer(IWorkspaceName sourceWorkspaceName, IWorkspaceName targetWorkspaceName, string sourceDatasetName)
{
//// Create workspace name objects.
//IWorkspaceName sourceWorkspaceName = new WorkspaceNameClass();
//IWorkspaceName targetWorkspaceName = new WorkspaceNameClass();
IName targetName = (IName) targetWorkspaceName;
//// Set the workspace name properties.
//sourceWorkspaceName.PathName = @"C:\arcgis\ArcTutor\BuildingaGeodatabase\Montgomery.gdb";
//sourceWorkspaceName.WorkspaceFactoryProgID = "esriDataSourcesGDB.FileGDBWorkspaceFactory";
//targetWorkspaceName.PathName = @"PartialMontgomery.gdb";
//targetWorkspaceName.WorkspaceFactoryProgID = "esriDataSourcesGDB.FileGDBWorkspaceFactory";
// Create a name object for the source feature class.
IFeatureClassName featureClassName = new FeatureClassNameClass();
// Set the featureClassName properties.
IDatasetName pSourceDatasetName = (IDatasetName) featureClassName;
pSourceDatasetName.WorkspaceName = sourceWorkspaceName;
pSourceDatasetName.Name = sourceDatasetName;
IName sourceName = (IName)pSourceDatasetName;
// Create an enumerator for source datasets.
IEnumName sourceEnumName = new NamesEnumeratorClass();
IEnumNameEdit sourceEnumNameEdit = (IEnumNameEdit) sourceEnumName;
// Add the name object for the source class to the enumerator.
sourceEnumNameEdit.Add(sourceName);
// Create a GeoDBDataTransfer object and a null name mapping enumerator.
IGeoDBDataTransfer geoDBDataTransfer = new GeoDBDataTransferClass();
IEnumNameMapping enumNameMapping;
// Use the data transfer object to create a name mapping enumerator.
Boolean conflictsFound = geoDBDataTransfer.GenerateNameMapping(sourceEnumName, targetName, out enumNameMapping);
enumNameMapping.Reset();
// Check for conflicts.
if (conflictsFound)
{
// Iterate through each name mapping.
INameMapping nameMapping = null;
while ((nameMapping = enumNameMapping.Next()) != null)
{
// Resolve the mapping's conflict (if there is one).
if (nameMapping.NameConflicts)
nameMapping.TargetName = nameMapping.GetSuggestedName(targetName);
// See if the mapping's children have conflicts.
IEnumNameMapping childEnumNameMapping = nameMapping.Children;
if (childEnumNameMapping == null) continue;
childEnumNameMapping.Reset();
// Iterate through each child mapping.
INameMapping childNameMapping = null;
while ((childNameMapping = childEnumNameMapping.Next()) != null)
{
if (childNameMapping.NameConflicts)
childNameMapping.TargetName = childNameMapping.GetSuggestedName(targetName);
}
}
}
// Start the transfer.
geoDBDataTransfer.Transfer(enumNameMapping, targetName);
}
