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Showing content from https://docs.microsoft.com/en-us/dotnet/api/system.data.datarelationcollection below:

DataRelationCollection Class (System.Data) | Microsoft Learn

public ref class DataRelationCollection abstract : System::Data::InternalDataCollectionBase

public abstract class DataRelationCollection : System.Data.InternalDataCollectionBase

[System.Serializable]
public abstract class DataRelationCollection : System.Data.InternalDataCollectionBase

type DataRelationCollection = class
    inherit InternalDataCollectionBase

[<System.Serializable>]
type DataRelationCollection = class
    inherit InternalDataCollectionBase

Public MustInherit Class DataRelationCollection
Inherits InternalDataCollectionBase

Inheritance

Attributes

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.

Creates a DataRelation with a specified parent and child column, and adds it to the collection.

Creates a DataRelation with the specified parent and child columns, and adds it to the collection.

Adds a DataRelation to the DataRelationCollection.

Creates a DataRelation with the specified name, parent and child columns, with optional constraints according to the value of the createConstraints parameter, and adds it to the collection.

Creates a DataRelation with the specified name, and parent and child columns, and adds it to the collection.

Creates a DataRelation with the specified name, arrays of parent and child columns, and value specifying whether to create a constraint, and adds it to the collection.

Creates a DataRelation with the specified name and arrays of parent and child columns, and adds it to the collection.

Performs verification on the table.

Copies the elements of the specified DataRelation array to the end of the collection.

Verifies whether the specified DataRelation can be removed from the collection.

Clears the collection of any relations.

Verifies whether a DataRelation with the specific name (case insensitive) exists in the collection.

Copies all the elements of the current InternalDataCollectionBase to a one-dimensional Array, starting at the specified InternalDataCollectionBase index.

Copies the collection of DataRelation objects starting at the specified index.

Determines whether the specified object is equal to the current object.

This method supports the .NET infrastructure and is not intended to be used directly from your code.

Gets an IEnumerator for the collection.

Serves as the default hash function.

Gets the Type of the current instance.

Gets the index of the specified DataRelation object.

Gets the index of the DataRelation specified by name.

Creates a shallow copy of the current Object.

Raises the CollectionChanged event.

Raises the CollectionChanged event.

Removes the specified relation from the collection.

Removes the relation with the specified name from the collection.

Removes the relation at the specified index from the collection.

Performs a verification on the specified DataRelation object.

Returns a string that represents the current object.

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

• Adding DataRelations
• Navigating DataRelations

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