ArcGIS Pro SDK （八）地理数据库 7 DDL
ArcGIS Pro SDK （八）地理数据库 7 DDL
文章目录
- ArcGIS Pro SDK （八）地理数据库 7 DDL
- 1 创建表
- 2 创建要素类
- 3 删除表
- 4 删除要素类
- 5 打开内存地理数据库
- 6 创建内存地理数据库
- 7 删除内存地理数据库
- 8 创建文件地理数据库
- 9 删除文件地理数据库
- 10 创建移动地理数据库
- 11 删除移动地理数据库
- 12 创建范围域
- 13 创建编码值域
- 14 创建要素数据集
- 15 删除要素数据集
- 16 重命名要素数据集
- 17 在一次操作中创建具有要素类的要素数据集
- 18 在现有要素数据集中创建要素类
- 19 将要素类添加到要素数据集
- 20 重命名表
- 21 向要素类添加字段
- 22 添加使用域的字段
- 23 从表中删除字段
- 24 创建注记要素类
- 25 创建关联要素的注记要素类
- 26 在要素数据集内创建注记要素类
环境：Visual Studio 2022 + .NET6 + ArcGIS Pro SDK 3.0
（图片来源网络，侵删）1 创建表
// 创建一个PoleInspection表，包含以下字段 // GlobalID // ObjectID // InspectionDate（日期） // InspectionResults（预定义的InspectionResults编码值域） // InspectionNotes（字符串） // 这个静态辅助方法创建一个带有默认值的GlobalID字段的FieldDescription FieldDescription globalIDFieldDescription = FieldDescription.CreateGlobalIDField(); // 这个静态辅助方法创建一个带有默认值的ObjectID字段的FieldDescription FieldDescription objectIDFieldDescription = FieldDescription.CreateObjectIDField(); // 为InspectionDate字段创建一个FieldDescription FieldDescription inspectionDateFieldDescription = new FieldDescription("InspectionDate", FieldType.Date) { AliasName = "Inspection Date" }; // 这个静态辅助方法为域字段创建一个FieldDescription（来自预定义的域） FieldDescription inspectionResultsFieldDescription = FieldDescription.CreateDomainField("InspectionResults", new CodedValueDomainDescription(inspectionResultsDomain)); inspectionResultsFieldDescription.AliasName = "Inspection Results"; // 这个静态辅助方法为字符串字段创建一个FieldDescription FieldDescription inspectionNotesFieldDescription = FieldDescription.CreateStringField("InspectionNotes", 512); inspectionNotesFieldDescription.AliasName = "Inspection Notes"; // 汇总所有字段描述的列表 List fieldDescriptions = new List() { globalIDFieldDescription, objectIDFieldDescription, inspectionDateFieldDescription, inspectionResultsFieldDescription, inspectionNotesFieldDescription }; // 创建一个描述要创建表的TableDescription对象 TableDescription tableDescription = new TableDescription("PoleInspection", fieldDescriptions); // 创建一个SchemaBuilder对象 SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 将PoleInspection表的创建添加到我们的DDL任务列表中 schemaBuilder.Create(tableDescription); // 执行DDL bool success = schemaBuilder.Build(); // 检查错误信息 if (!success) { IReadOnlyList errorMessages = schemaBuilder.ErrorMessages; //等等 }2 创建要素类
// 创建一个Cities要素类，包含以下字段 // GlobalID // ObjectID // Name（字符串） // Population（整数） // 这个静态辅助方法创建一个带有默认值的GlobalID字段的FieldDescription FieldDescription globalIDFieldDescription = FieldDescription.CreateGlobalIDField(); // 这个静态辅助方法创建一个带有默认值的ObjectID字段的FieldDescription FieldDescription objectIDFieldDescription = FieldDescription.CreateObjectIDField(); // 这个静态辅助方法为字符串字段创建一个FieldDescription FieldDescription nameFieldDescription = FieldDescription.CreateStringField("Name", 255); // 这个静态辅助方法为整数字段创建一个FieldDescription FieldDescription populationFieldDescription = FieldDescription.CreateIntegerField("Population"); // 汇总所有字段描述的列表 List fieldDescriptions = new List() { globalIDFieldDescription, objectIDFieldDescription, nameFieldDescription, populationFieldDescription }; // 创建一个ShapeDescription对象 ShapeDescription shapeDescription = new ShapeDescription(GeometryType.Point, spatialReference); // 或者，ShapeDescription可以从另一个要素类创建。在这种情况下，新的要素类将继承现有类的形状属性 ShapeDescription alternativeShapeDescription = new ShapeDescription(existingFeatureClass.GetDefinition()); // 创建一个描述要创建要素类的FeatureClassDescription对象 FeatureClassDescription featureClassDescription = new FeatureClassDescription("Cities", fieldDescriptions, shapeDescription); // 创建一个SchemaBuilder对象 SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 将Cities要素类的创建添加到我们的DDL任务列表中 schemaBuilder.Create(featureClassDescription); // 执行DDL bool success = schemaBuilder.Build(); // 检查错误信息 if (!success) { IReadOnlyList errorMessages = schemaBuilder.ErrorMessages; //等等 }3 删除表
// 创建一个TableDescription对象 TableDescription tableDescription = new TableDescription(table.GetDefinition()); // 创建一个SchemaBuilder对象 SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 将表的删除添加到我们的DDL任务列表中 schemaBuilder.Delete(tableDescription); // 执行DDL bool success = schemaBuilder.Build();
4 删除要素类
// 创建一个FeatureClassDescription对象 FeatureClassDescription featureClassDescription = new FeatureClassDescription(featureClass.GetDefinition()); // 创建一个SchemaBuilder对象 SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 将要素类的删除添加到我们的DDL任务列表中 schemaBuilder.Delete(featureClassDescription); // 执行DDL bool success = schemaBuilder.Build();
5 打开内存地理数据库
// 连接到默认的内存地理数据库（如果存在），否则抛出异常 MemoryConnectionProperties memoryConnectionProperties = new MemoryConnectionProperties(); // 或者，连接到名为'InterimMemoryGeodatabase'的内存地理数据库 // MemoryConnectionProperties memoryConnectionProperties = new MemoryConnectionProperties("InterimMemoryGeodatabase"); // 打开内存地理数据库 using (Geodatabase geodatabase = new Geodatabase(memoryConnectionProperties)) { // 使用内存地理数据库 }6 创建内存地理数据库
// 创建连接默认内存地理数据库的内存连接属性 MemoryConnectionProperties memoryConnectionProperties = new MemoryConnectionProperties(); // 或者创建连接名为'InterimMemoryGeodatabase'的内存地理数据库的内存连接属性 // MemoryConnectionProperties memoryConnectionProperties = new MemoryConnectionProperties("InterimMemoryGeodatabase"); // 创建并使用内存地理数据库 using (Geodatabase geodatabase = SchemaBuilder.CreateGeodatabase(memoryConnectionProperties)) { // 在这里创建额外的模式 }7 删除内存地理数据库
// 创建连接默认内存地理数据库的内存连接属性 MemoryConnectionProperties memoryConnectionProperties = new MemoryConnectionProperties(); // 删除内存地理数据库 SchemaBuilder.DeleteGeodatabase(memoryConnectionProperties);
8 创建文件地理数据库
// 创建FileGeodatabaseConnectionPath，指定要创建的文件地理数据库名称 FileGeodatabaseConnectionPath fileGeodatabaseConnectionPath = new FileGeodatabaseConnectionPath(new Uri(@"C:\Path-To-File-Geodatabase\YourName.gdb")); // 创建并使用文件地理数据库 using (Geodatabase geodatabase = SchemaBuilder.CreateGeodatabase(fileGeodatabaseConnectionPath)) { // 在这里创建额外的模式 }9 删除文件地理数据库
// 创建FileGeodatabaseConnectionPath，指定要删除的文件地理数据库名称 FileGeodatabaseConnectionPath fileGeodatabaseConnectionPath = new FileGeodatabaseConnectionPath(new Uri(@"C:\Path-To-File-Geodatabase\YourName.gdb")); // 删除文件地理数据库 SchemaBuilder.DeleteGeodatabase(fileGeodatabaseConnectionPath);
10 创建移动地理数据库
// 创建MobileGeodatabaseConnectionPath，指定要创建的移动地理数据库名称 MobileGeodatabaseConnectionPath mobileGeodatabaseConnectionPath = new MobileGeodatabaseConnectionPath(new Uri(@"C:\Path-To-Mobile-Geodatabase\YourName.geodatabase")); // 创建并使用移动地理数据库 using (Geodatabase geodatabase = SchemaBuilder.CreateGeodatabase(mobileGeodatabaseConnectionPath)) { // 在这里创建额外的模式 }11 删除移动地理数据库
// 创建MobileGeodatabaseConnectionPath，指定要删除的移动地理数据库名称 MobileGeodatabaseConnectionPath mobileGeodatabaseConnectionPath = new MobileGeodatabaseConnectionPath(new Uri(@"C:\Path-To-Mobile-Geodatabase\YourName.geodatabase")); // 删除移动地理数据库 SchemaBuilder.DeleteGeodatabase(mobileGeodatabaseConnectionPath);12 创建范围域
// 创建一个范围描述，最小值 = 0，最大值 = 1000 RangeDomainDescription rangeDomainDescriptionMinMax = new RangeDomainDescription("RangeDomain_0_1000", FieldType.Integer, 0, 1000) { Description = "Domain value ranges from 0 to 1000" }; SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 创建范围域 schemaBuilder.Create(rangeDomainDescriptionMinMax); schemaBuilder.Build();13 创建编码值域
// 创建一个用于水管的编码值域描述 CodedValueDomainDescription codedValueDomainDescription = new CodedValueDomainDescription( "WaterPipeTypes", FieldType.String, new SortedList { { "Copper", "C_1" }, { "Steel", "S_2" } }) { SplitPolicy = SplitPolicy.Duplicate, MergePolicy = MergePolicy.DefaultValue }; SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 创建编码值域 CodedValueDomainToken codedValueDomainToken = schemaBuilder.Create(codedValueDomainDescription); schemaBuilder.Build();14 创建要素数据集
// 创建名为'Parcel_Information'的要素数据集 SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 创建名为'Parcel Information'的要素数据集 FeatureDatasetDescription featureDatasetDescription = new FeatureDatasetDescription("Parcel_Information", SpatialReferences.WGS84); schemaBuilder.Create(featureDatasetDescription); // 构建状态 bool buildStatus = schemaBuilder.Build(); // 构建错误 if (!buildStatus) { IReadOnlyList errors = schemaBuilder.ErrorMessages; }15 删除要素数据集
// 删除名为'Parcel_Information'的要素数据集 FeatureDatasetDefinition featureDatasetDefinition = geodatabase.GetDefinition("Parcel_Information"); FeatureDatasetDescription featureDatasetDescription = new FeatureDatasetDescription(featureDatasetDefinition); SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 删除名为'Parcel_Information'的现有要素数据集 schemaBuilder.Delete(featureDatasetDescription); schemaBuilder.Build();16 重命名要素数据集
// 将一个要素数据集从 'Parcel_Information' 重命名为 'Parcel_Information_With_Tax_Jurisdiction' string originalDatasetName = "Parcel_Information"; string datasetRenameAs = "Parcel_Information_With_Tax_Jurisdiction"; FeatureDatasetDefinition originalDatasetDefinition = geodatabase.GetDefinition(originalDatasetName); FeatureDatasetDescription originalFeatureDatasetDescription = new FeatureDatasetDescription(originalDatasetDefinition); SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 将现有的要素数据集 'Parcel_Information' 重命名为 'Parcel_Information_With_Tax_Jurisdiction' schemaBuilder.Rename(originalFeatureDatasetDescription, datasetRenameAs); schemaBuilder.Build();17 在一次操作中创建具有要素类的要素数据集
// 在一次操作中创建一个名为 'Parcel_Information' 的要素数据集和一个名为 'Parcels' 的要素类 string featureDatasetName = "Parcel_Information"; string featureClassName = "Parcels"; SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 创建一个要素数据集令牌 FeatureDatasetDescription featureDatasetDescription = new FeatureDatasetDescription(featureDatasetName, SpatialReferences.WGS84); FeatureDatasetToken featureDatasetToken = schemaBuilder.Create(featureDatasetDescription); // 创建一个要素类描述 FeatureClassDescription featureClassDescription = new FeatureClassDescription( featureClassName, new List() { new FieldDescription("Id", FieldType.Integer), new FieldDescription("Address", FieldType.String) }, new ShapeDescription(GeometryType.Point, SpatialReferences.WGS84)); // 在要素数据集中创建一个要素类 FeatureClassToken featureClassToken = schemaBuilder.Create(new FeatureDatasetDescription(featureDatasetToken), featureClassDescription); // 构建状态 bool buildStatus = schemaBuilder.Build(); // 构建错误 if (!buildStatus) { IReadOnlyList errors = schemaBuilder.ErrorMessages; }18 在现有要素数据集中创建要素类
// 在现有名为 'Parcels_Information' 的要素数据集中创建一个名为 'Tax_Jurisdiction' 的要素类 string featureDatasetName = "Parcels_Information"; string featureClassName = "Tax_Jurisdiction"; // 创建一个要素类描述 FeatureClassDescription featureClassDescription = new FeatureClassDescription( featureClassName, new List() { new FieldDescription("Tax_Id", FieldType.Integer), new FieldDescription("Address", FieldType.String) }, new ShapeDescription(GeometryType.Point, SpatialReferences.WGS84)); FeatureDatasetDefinition featureDatasetDefinition = geodatabase.GetDefinition(featureDatasetName); SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 使用FeatureDatasetDefinition在FeatureDataset中创建一个FeatureClass schemaBuilder.Create(new FeatureDatasetDescription(featureDatasetDefinition), featureClassDescription); // 构建状态 bool buildStatus = schemaBuilder.Build(); // 构建错误 if (!buildStatus) { IReadOnlyList errors = schemaBuilder.ErrorMessages; }19 将要素类添加到要素数据集
// 将一个名为 'Tax_Jurisdiction' 的要素类添加到一个名为 'Parcels_Information' 的要素数据集中 string featureDatasetName = "Parcels_Information"; string featureClassNameToAdd = "Tax_Jurisdiction"; FeatureDatasetDefinition featureDatasetDefinition = geodatabase.GetDefinition(featureDatasetName); FeatureDatasetDescription featureDatasetDescription = new FeatureDatasetDescription(featureDatasetDefinition); FeatureClassDefinition featureClassDefinition = geodatabase.GetDefinition(featureClassNameToAdd); FeatureClassDescription featureClassDescription = new FeatureClassDescription(featureClassDefinition); SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 将 'Tax_Jurisdiction' 要素类添加到 'Parcels_Information' 要素数据集中 schemaBuilder.AddFeatureClass(featureDatasetDescription, featureClassDescription); bool addStatus = schemaBuilder.Build(); if (!addStatus) { IReadOnlyList errors = schemaBuilder.ErrorMessages; }20 重命名表
// 将一个表从 'Original_Table' 重命名为 'Renamed_Table' string tableToBeRenamed = "Original_Table"; string tableRenameAs = "Renamed_Table"; TableDefinition tableDefinition = geodatabase.GetDefinition(tableToBeRenamed); SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 表重命名 schemaBuilder.Rename(new TableDescription(tableDefinition), tableRenameAs); schemaBuilder.Build();
21 向要素类添加字段
// 向 'Parcels' 要素类添加以下字段 // 全局 ID // Parcel_ID // Tax_Code // Parcel_Address // 要添加字段的要素类 string featureClassName = "Parcels"; FeatureClassDefinition originalFeatureClassDefinition = geodatabase.GetDefinition(featureClassName); FeatureClassDescription originalFeatureClassDescription = new FeatureClassDescription(originalFeatureClassDefinition); // 向 'Parcels' 要素类添加的四个新字段 FieldDescription globalIdField = FieldDescription.CreateGlobalIDField(); FieldDescription parcelIdDescription = new FieldDescription("Parcel_ID", FieldType.GUID); FieldDescription taxCodeDescription = FieldDescription.CreateIntegerField("Tax_Code"); FieldDescription addressDescription = FieldDescription.CreateStringField("Parcel_Address", 150); List fieldsToAdd = new List { globalIdField, parcelIdDescription, taxCodeDescription, addressDescription }; // 将新字段添加到新的 FieldDescription 列表中 List modifiedFieldDescriptions = new List(originalFeatureClassDescription.FieldDescriptions); modifiedFieldDescriptions.AddRange(fieldsToAdd); // 带有附加字段的新 FeatureClassDescription FeatureClassDescription modifiedFeatureClassDescription = new FeatureClassDescription( originalFeatureClassDescription.Name, modifiedFieldDescriptions, originalFeatureClassDescription.ShapeDescription); SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 用新添加的字段更新 'Parcels' 要素类 schemaBuilder.Modify(modifiedFeatureClassDescription); bool modifyStatus = schemaBuilder.Build(); if (!modifyStatus) { IReadOnlyList errors = schemaBuilder.ErrorMessages; }22 添加使用域的字段
// 添加一个名为“PipeType”的字段，该字段使用编码值域到“Pipes”要素类 // 要添加字段的要素类 string featureClassName = "Pipes"; SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 创建一个水管的编码值域描述 CodedValueDomainDescription pipeDomainDescription = new CodedValueDomainDescription( "WaterPipeTypes", FieldType.String, new SortedList { { "Copper", "C_1" }, { "Steel", "S_2" } }) { SplitPolicy = SplitPolicy.Duplicate, MergePolicy = MergePolicy.DefaultValue }; // 创建一个编码值域令牌 CodedValueDomainToken codedValueDomainToken = schemaBuilder.Create(pipeDomainDescription); // 从域令牌创建一个新的描述 CodedValueDomainDescription codedValueDomainDescription = new CodedValueDomainDescription(codedValueDomainToken); // 使用域描述创建一个名为“PipeType”的字段 FieldDescription domainFieldDescription = new FieldDescription("PipeType", FieldType.String) { DomainDescription = codedValueDomainDescription }; //检索“Pipes”要素类的现有信息 FeatureClassDefinition originalFeatureClassDefinition = geodatabase.GetDefinition(featureClassName); FeatureClassDescription originalFeatureClassDescription = new FeatureClassDescription(originalFeatureClassDefinition); // 将域字段添加到现有字段中 List modifiedFieldDescriptions = new List(originalFeatureClassDescription.FieldDescriptions) { domainFieldDescription }; // 创建一个带有更新字段的“Pipes”要素类的新描述 FeatureClassDescription featureClassDescription = new FeatureClassDescription(originalFeatureClassDescription.Name, modifiedFieldDescriptions, originalFeatureClassDescription.ShapeDescription); // 使用域字段更新“Pipes”要素类 schemaBuilder.Modify(featureClassDescription); // 构建状态 bool buildStatus = schemaBuilder.Build(); // 构建错误 if (!buildStatus) { IReadOnlyList errors = schemaBuilder.ErrorMessages; }23 从表中删除字段
// 从“Parcels”表中删除所有字段，保留以下字段 // Tax_Code // Parcel_Address // 要删除字段的表 string tableName = "Parcels"; TableDefinition tableDefinition = geodatabase.GetDefinition(tableName); IReadOnlyList fields = tableDefinition.GetFields(); // 从“Parcels”表中获取现有字段 Field taxCodeField = fields.First(f => f.Name.Equals("Tax_Code")); Field parcelAddressField = fields.First(f => f.Name.Equals("Parcel_Address")); FieldDescription taxFieldDescription = new FieldDescription(taxCodeField); FieldDescription parcelAddressFieldDescription = new FieldDescription(parcelAddressField); // 修改后的表中要保留的字段 List fieldsToBeRetained = new List() { taxFieldDescription, parcelAddressFieldDescription }; // 包含“Tax_Code”和“Parcel_Address”字段的“Parcels”表的新描述 TableDescription modifiedTableDescription = new TableDescription(tableName, fieldsToBeRetained); SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 删除除“Tax_Code”和“Parcel_Address”字段外的所有字段 schemaBuilder.Modify(modifiedTableDescription); schemaBuilder.Build();24 创建注记要素类
// 创建一个名为“Cities”的注记要素类 // 包含以下用户定义字段 // Name // GlobalID // 注记要素类名称 string annotationFeatureClassName = "CitiesAnnotation"; // 为注记要素类创建用户定义的属性字段 FieldDescription globalIDFieldDescription = FieldDescription.CreateGlobalIDField(); FieldDescription nameFieldDescription = FieldDescription.CreateStringField("Name", 255); // 创建所有字段描述的列表 List fieldDescriptions = new List { globalIDFieldDescription, nameFieldDescription }; // 创建一个ShapeDescription对象 ShapeDescription shapeDescription = new ShapeDescription(GeometryType.Polygon, spatialReference); // 为Maplex引擎创建常规放置属性 CIMMaplexGeneralPlacementProperties generalPlacementProperties = new CIMMaplexGeneralPlacementProperties { AllowBorderOverlap = true, PlacementQuality = MaplexQualityType.High, DrawUnplacedLabels = true, InvertedLabelTolerance = 1.0, RotateLabelWithDisplay = true, UnplacedLabelColor = new CIMRGBColor { R = 0, G = 255, B = 0, Alpha = 0.5f // 绿色 } }; // 为标准引擎创建常规放置属性 //CIMStandardGeneralPlacementProperties generalPlacementProperties = // new CIMStandardGeneralPlacementProperties // { // DrawUnplacedLabels = true, // InvertedLabelTolerance = 3.0, // RotateLabelWithDisplay = true, // UnplacedLabelColor = new CIMRGBColor // { // R = 255, G = 0, B = 0, Alpha = 0.5f // 红色 // } // }; // 创建注记标签类 // 绿色标签 CIMLabelClass greenLabelClass = new CIMLabelClass { Name = "Green", ExpressionTitle = "Expression-Green", ExpressionEngine = LabelExpressionEngine.Arcade, Expression = "$feature.OBJECTID", ID = 1, Priority = 0, Visibility = true, TextSymbol = new CIMSymbolReference { Symbol = new CIMTextSymbol() { Angle = 45, FontType = FontType.Type1, FontFamilyName = "Tahoma", FontEffects = FontEffects.Normal, HaloSize = 2.0, Symbol = new CIMPolygonSymbol { SymbolLayers = new CIMSymbolLayer[] { new CIMSolidFill { Color = CIMColor.CreateRGBColor(0, 255, 0) } }, UseRealWorldSymbolSizes = true } }, MaxScale = 0, MinScale = 0, SymbolName = "TextSymbol-Green" }, StandardLabelPlacementProperties = new CIMStandardLabelPlacementProperties { AllowOverlappingLabels = true, LineOffset = 1.0 }, MaplexLabelPlacementProperties = new CIMMaplexLabelPlacementProperties { AlignLabelToLineDirection = true, AvoidPolygonHoles = true } }; // 蓝色标签 CIMLabelClass blueLabelClass = new CIMLabelClass { Name = "Blue", ExpressionTitle = "Expression-Blue", ExpressionEngine = LabelExpressionEngine.Arcade, Expression = "$feature.OBJECTID", ID = 2, Priority = 0, Visibility = true, TextSymbol = new CIMSymbolReference { Symbol = new CIMTextSymbol() { Angle = 45, FontType = FontType.Type1, FontFamilyName = "Consolas", FontEffects = FontEffects.Normal, HaloSize = 2.0, Symbol = new CIMPolygonSymbol { SymbolLayers = new CIMSymbolLayer[] { new CIMSolidFill { Color = CIMColor.CreateRGBColor(0, 0, 255) } }, UseRealWorldSymbolSizes = true } }, MaxScale = 0, MinScale = 0, SymbolName = "TextSymbol-Blue" }, StandardLabelPlacementProperties = new CIMStandardLabelPlacementProperties { AllowOverlappingLabels = true, LineOffset = 1.0 }, MaplexLabelPlacementProperties = new CIMMaplexLabelPlacementProperties { AlignLabelToLineDirection = true, AvoidPolygonHoles = true } }; // 创建标签列表 List labelClasses = new List { greenLabelClass, blueLabelClass }; // 创建注记要素类描述对象以描述要创建的要素类 AnnotationFeatureClassDescription annotationFeatureClassDescription = new AnnotationFeatureClassDescription(annotationFeatureClassName, fieldDescriptions, shapeDescription, generalPlacementProperties, labelClasses) { IsAutoCreate = true, IsSymbolIDRequired = false, IsUpdatedOnShapeChange = true }; // 创建一个SchemaBuilder对象 SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 将创建Cities注记要素类的操作添加到DDL任务列表中 schemaBuilder.Create(annotationFeatureClassDescription); // 执行DDL bool success = schemaBuilder.Build(); // 检查错误消息 if (!success) { IReadOnlyList errorMessages = schemaBuilder.ErrorMessages; //等。 }25 创建关联要素的注记要素类
// 在供水网络中创建水管和阀门之间的关联注记要素类 // 包含以下用户定义字段 // PipeName // GlobalID // 注记要素类名称 string annotationFeatureClassName = "WaterPipeAnnotation"; // 为注记要素类创建用户定义的属性字段 FieldDescription pipeGlobalID = FieldDescription.CreateGlobalIDField(); FieldDescription nameFieldDescription = FieldDescription.CreateStringField("Name", 255); // 创建所有字段描述的列表 List fieldDescriptions = new List { pipeGlobalID, nameFieldDescription }; // 创建一个ShapeDescription对象 ShapeDescription shapeDescription = new ShapeDescription(GeometryType.Polygon, spatialReference); // 为Maplex引擎创建常规放置属性 CIMMaplexGeneralPlacementProperties generalPlacementProperties = new CIMMaplexGeneralPlacementProperties { AllowBorderOverlap = true, PlacementQuality = MaplexQualityType.High, DrawUnplacedLabels = true, InvertedLabelTolerance = 1.0, RotateLabelWithDisplay = true, UnplacedLabelColor = new CIMRGBColor { R = 255, G = 0, B = 0, Alpha = 0.5f } }; // 创建注记标签类 // 绿色标签 CIMLabelClass greenLabelClass = new CIMLabelClass { Name = "Green", ExpressionTitle = "Expression-Green", ExpressionEngine = LabelExpressionEngine.Arcade, Expression = "$feature.OBJECTID", ID = 1, Priority = 0, Visibility = true, TextSymbol = new CIMSymbolReference { Symbol = new CIMTextSymbol() { Angle = 45, FontType = FontType.Type1, FontFamilyName = "Tahoma", FontEffects = FontEffects.Normal, HaloSize = 2.0, Symbol = new CIMPolygonSymbol { SymbolLayers = new CIMSymbolLayer[] { new CIMSolidFill { Color = CIMColor.CreateRGBColor(0, 255, 0) } }, UseRealWorldSymbolSizes = true } }, MaxScale = 0, MinScale = 0, SymbolName = "TextSymbol-Green" }, StandardLabelPlacementProperties = new CIMStandardLabelPlacementProperties { AllowOverlappingLabels = true, LineOffset = 1.0 }, MaplexLabelPlacementProperties = new CIMMaplexLabelPlacementProperties { AlignLabelToLineDirection = true, AvoidPolygonHoles = true } }; // 蓝色标签 CIMLabelClass blueLabelClass = new CIMLabelClass { Name = "Blue", ExpressionTitle = "Expression-Blue", ExpressionEngine = LabelExpressionEngine.Arcade, Expression = "$feature.OBJECTID", ID = 2, Priority = 0, Visibility = true, TextSymbol = new CIMSymbolReference { Symbol = new CIMTextSymbol() { Angle = 45, FontType = FontType.Type1, FontFamilyName = "Consolas", FontEffects = FontEffects.Normal, HaloSize = 2.0, Symbol = new CIMPolygonSymbol { SymbolLayers = new CIMSymbolLayer[] { new CIMSolidFill { Color = CIMColor.CreateRGBColor(0, 0, 255) } }, UseRealWorldSymbolSizes = true } }, MaxScale = 0, MinScale = 0, SymbolName = "TextSymbol-Blue" }, StandardLabelPlacementProperties = new CIMStandardLabelPlacementProperties { AllowOverlappingLabels = true, LineOffset = 1.0 }, MaplexLabelPlacementProperties = new CIMMaplexLabelPlacementProperties { AlignLabelToLineDirection = true, AvoidPolygonHoles = true } }; // 创建标签列表 List labelClasses = new List { greenLabelClass, blueLabelClass }; // 创建关联要素描述 // 关联要素类名称 string linkedFeatureClassName = "WaterPipe"; // 为水管创建字段 FieldDescription waterPipeGlobalID = FieldDescription.CreateGlobalIDField(); FieldDescription pipeName = FieldDescription.CreateStringField("PipeName", 255); // 创建水管字段描述的列表 List pipeFieldDescriptions = new List { waterPipeGlobalID, pipeName }; // 创建关联要素类描述 FeatureClassDescription linkedFeatureClassDescription = new FeatureClassDescription(linkedFeatureClassName, pipeFieldDescriptions, new ShapeDescription(GeometryType.Polyline, spatialReference)); // 创建一个SchemaBuilder对象 SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 将创建关联要素类的操作添加到DDL任务列表中 FeatureClassToken linkedFeatureClassToken = schemaBuilder.Create(linkedFeatureClassDescription); // 创建一个注记要素类描述对象以描述要创建的要素类 AnnotationFeatureClassDescription annotationFeatureClassDescription = new AnnotationFeatureClassDescription(annotationFeatureClassName, fieldDescriptions, shapeDescription, generalPlacementProperties, labelClasses, new FeatureClassDescription(linkedFeatureClassToken)) { IsAutoCreate = true, IsSymbolIDRequired = false, IsUpdatedOnShapeChange = true }; // 将创建注记要素类的操作添加到DDL任务列表中 schemaBuilder.Create(annotationFeatureClassDescription); // 执行DDL bool success = schemaBuilder.Build(); // 检查错误消息 if (!success) { IReadOnlyList errorMessages = schemaBuilder.ErrorMessages; //等。 }26 在要素数据集内创建注记要素类
// 在Places要素数据集中使用现有注记要素类创建Cities注记要素类 // 要素数据集名称 string featureDatasetName = "Places"; // 注记要素类名称 string annotationFeatureClassName = "CitiesAnnotation"; // 创建一个SchemaBuilder对象 SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase); // 打开现有的注记要素类 using (AnnotationFeatureClass existingAnnotationFeatureClass = geodatabase.OpenDataset("ExistingAnnotationFeatureClass")) { // 创建要素数据集描述 FeatureDatasetDescription featureDatasetDescription = new FeatureDatasetDescription(featureDatasetName, existingAnnotationFeatureClass.GetDefinition().GetSpatialReference()); // 将创建Places数据集的操作添加到DDL任务中 FeatureDatasetToken featureDatasetToken = schemaBuilder.Create(featureDatasetDescription); // 使用现有注记要素类创建注记要素类描述 AnnotationFeatureClassDescription annotationFeatureClassDescription = new AnnotationFeatureClassDescription(annotationFeatureClassName, existingAnnotationFeatureClass.GetDefinition()) { IsAutoCreate = true, IsSymbolIDRequired = false, IsUpdatedOnShapeChange = true }; // 将创建Cities注记要素类的操作添加到Places要素数据集中 schemaBuilder.Create(new FeatureDatasetDescription(featureDatasetToken), annotationFeatureClassDescription); // 执行DDL bool success = schemaBuilder.Build(); // 检查错误消息 if (!success) { IReadOnlyList errorMessages = schemaBuilder.ErrorMessages; //等。 } }
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