ArcGIS Pro 3.3 API Reference Guide
ArcGIS.Core.Data.DDL Namespace / FieldDescription Class / CreateObjectIDField Method
Example

In This Topic
    CreateObjectIDField Method
    In This Topic
    Creates a field description for an Object ID ArcGIS.Core.Data.Field.
    Syntax
    public static FieldDescription CreateObjectIDField()
    Public Shared Function CreateObjectIDField() As FieldDescription

    Return Value

    A field description for an Object ID ArcGIS.Core.Data.Field.
    Example
    Creating a Table
    public void CreateTableSnippet(Geodatabase geodatabase, CodedValueDomain inspectionResultsDomain)
    {
      // Create a PoleInspection table with the following fields
      //  GlobalID
      //  ObjectID
      //  InspectionDate (date)
      //  InspectionResults (pre-existing InspectionResults coded value domain)
      //  InspectionNotes (string)
    
      // This static helper routine creates a FieldDescription for a GlobalID field with default values
      FieldDescription globalIDFieldDescription = FieldDescription.CreateGlobalIDField();
    
      // This static helper routine creates a FieldDescription for an ObjectID field with default values
      FieldDescription objectIDFieldDescription = FieldDescription.CreateObjectIDField();
    
      // Create a FieldDescription for the InspectionDate field
      FieldDescription inspectionDateFieldDescription = new FieldDescription("InspectionDate", FieldType.Date)
      {
        AliasName = "Inspection Date"
      };
    
      // This static helper routine creates a FieldDescription for a Domain field (from a pre-existing domain)
      FieldDescription inspectionResultsFieldDescription = FieldDescription.CreateDomainField("InspectionResults", new CodedValueDomainDescription(inspectionResultsDomain));
      inspectionResultsFieldDescription.AliasName = "Inspection Results";
    
      // This static helper routine creates a FieldDescription for a string field
      FieldDescription inspectionNotesFieldDescription = FieldDescription.CreateStringField("InspectionNotes", 512);
      inspectionNotesFieldDescription.AliasName = "Inspection Notes";
    
      // Assemble a list of all of our field descriptions
      List<FieldDescription> fieldDescriptions = new List<FieldDescription>()
        { globalIDFieldDescription, objectIDFieldDescription, inspectionDateFieldDescription, inspectionResultsFieldDescription, inspectionNotesFieldDescription };
    
      // Create a TableDescription object to describe the table to create
      TableDescription tableDescription = new TableDescription("PoleInspection", fieldDescriptions);
    
      // Create a SchemaBuilder object
      SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase);
    
      // Add the creation of PoleInspection to our list of DDL tasks
      schemaBuilder.Create(tableDescription);
    
      // Execute the DDL
      bool success = schemaBuilder.Build();
    
      // Inspect error messages
      if (!success)
      {
        IReadOnlyList<string> errorMessages = schemaBuilder.ErrorMessages;
        //etc.
      }
    }
    Creating a feature class
    public void CreateFeatureClassSnippet(Geodatabase geodatabase, FeatureClass existingFeatureClass, SpatialReference spatialReference)
    {
      // Create a Cities feature class with the following fields
      //  GlobalID
      //  ObjectID
      //  Name (string)
      //  Population (integer)
    
      // This static helper routine creates a FieldDescription for a GlobalID field with default values
      FieldDescription globalIDFieldDescription = FieldDescription.CreateGlobalIDField();
    
      // This static helper routine creates a FieldDescription for an ObjectID field with default values
      FieldDescription objectIDFieldDescription = FieldDescription.CreateObjectIDField();
    
      // This static helper routine creates a FieldDescription for a string field
      FieldDescription nameFieldDescription = FieldDescription.CreateStringField("Name", 255);
    
      // This static helper routine creates a FieldDescription for an integer field
      FieldDescription populationFieldDescription = FieldDescription.CreateIntegerField("Population");
    
      // Assemble a list of all of our field descriptions
      List<FieldDescription> fieldDescriptions = new List<FieldDescription>()
        { globalIDFieldDescription, objectIDFieldDescription, nameFieldDescription, populationFieldDescription };
    
      // Create a ShapeDescription object
      ShapeDescription shapeDescription = new ShapeDescription(GeometryType.Point, spatialReference);
    
      // Alternatively, ShapeDescriptions can be created from another feature class.  In this case, the new feature class will inherit the same shape properties of the existing class
      ShapeDescription alternativeShapeDescription = new ShapeDescription(existingFeatureClass.GetDefinition());
    
      // Create a FeatureClassDescription object to describe the feature class to create
      FeatureClassDescription featureClassDescription =
        new FeatureClassDescription("Cities", fieldDescriptions, shapeDescription);
    
      // Create a SchemaBuilder object
      SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase);
    
      // Add the creation of the Cities feature class to our list of DDL tasks
      schemaBuilder.Create(featureClassDescription);
    
      // Execute the DDL
      bool success = schemaBuilder.Build();
    
      // Inspect error messages
      if (!success)
      {
        IReadOnlyList<string> errorMessages = schemaBuilder.ErrorMessages;
        //etc.
      }
    }
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3 or higher.
    See Also