GetDefinition<T>(String) Method

In This Topic

Gets a specific Definition instance associated with of type in the feature dataset. This method must be called on the MCT. Use QueuedTask.Run.

Syntax

C#
Visual Basic (Declaration)

public T GetDefinition<T>( 
   string name
)
where T: Definition

Public Overloads Function GetDefinition(Of T As Definition)( _
   ByVal name As String _
) As T

Parameters

name: The name of the dataset.

Type Parameters

T: The type of dataset definition.

Return Value

A specific Definition instance corresponding to type .

Exceptions

Exception	Description
System.InvalidOperationException	Using AttributedRelationshipClassDefinition as T to open a definition whose type is actually RelationshipClassDefinition. -or- The DatasetType corresponding to type T is not supported.
System.ArgumentException	name is invalid (e.g., a null value or an empty string).
ArcGIS.Core.Data.Exceptions.GeodatabaseException	A geodatabase-related exception has occurred.

Exception

Description

System.InvalidOperationException

Using AttributedRelationshipClassDefinition as T to open a definition whose type is actually RelationshipClassDefinition.

-or-

The DatasetType corresponding to type T is not supported.

System.ArgumentException

is invalid (e.g., a null value or an empty string).

ArcGIS.Core.Data.Exceptions.GeodatabaseException

A geodatabase-related exception has occurred.

Example

Iterate datasets inside a feature dataset

public void IterateDatasetsFromAFeatureDataset(Geodatabase geodatabase, string featureDatasetName = "City", string featureClassInFeatureDataset = "Buildings")
{
  // Open a feature dataset
  using (FeatureDataset cityFeatureDataset = geodatabase.OpenDataset<FeatureDataset>(featureDatasetName))
  {
    // Get a feature class definition from a feature dataset
    FeatureClassDefinition buildingsFeatureClassDefinition = cityFeatureDataset.GetDefinition<FeatureClassDefinition>(featureClassInFeatureDataset);

    // Iterate dataset definition
    IReadOnlyList<FeatureClassDefinition> cityFeatureClassDefinitions = cityFeatureDataset.GetDefinitions<FeatureClassDefinition>();
    foreach (FeatureClassDefinition cityFeatureClassDefinition in cityFeatureClassDefinitions)
    {
      // Use feature class definition
    }
  }
}

Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.2 or higher.

Reference

FeatureDataset Class
FeatureDataset Members
Overload List

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