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DataRelationCollection.Add Method (DataColumn, DataColumn)

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

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

public virtual DataRelation Add(
	DataColumn parentColumn,
	DataColumn childColumn
)

Parameters

parentColumn
Type: System.Data.DataColumn

The parent column of the relation.

childColumn
Type: System.Data.DataColumn

The child column of the relation.

Return Value

Type: System.Data.DataRelation
The created relation.

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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