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DataRelationCollection.Add Method (DataRelation)

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

'Declaration
Public Sub Add ( _
	relation As DataRelation _
)

Parameters

relation
Type: System.Data.DataRelation

The DataRelation to add to the collection.

ExceptionCondition
ArgumentNullException

The relation parameter is a null value.

ArgumentException

The relation already belongs to this collection, or it belongs to another collection.

DuplicateNameException

The collection already has a relation with the specified name. (The comparison is not case sensitive.)

InvalidConstraintException

The relation has entered an invalid state since it was created.

If the relation is successfully added to the collection, the CollectionChanged event occurs.

When a DataRelation object is added to the collection, ForeignKeyConstraint and UniqueConstraint objects are created by default if they do not already exist.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0
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