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DataRelationCollection Class

Represents the collection of DataRelation objects for this DataSet.

Namespace: System.Data
Assembly: System.Data (in

Public MustInherit Class DataRelationCollection
	Inherits InternalDataCollectionBase
Dim instance As DataRelationCollection

public abstract class DataRelationCollection extends InternalDataCollectionBase
public abstract class DataRelationCollection extends InternalDataCollectionBase

A DataRelationCollection object enables navigation between related parent/child DataTable objects.

You create a DataRelationCollection object by defining it as a property of either the DataSet or the DataTable, instead of by directly using a constructor. (Use the Relations property of the DataSet, or the ParentRelations property of the DataTable.)

To access the collection, use the Relations property of the DataSet object.

As soon as the collection exists you can manage the objects it contains by using methods such as Add, Clear, and Remove.


This type is safe for multithreaded read operations. You must synchronize any write operations.

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0