Add Method (DataColumn[], DataColumn[])

DataRelationCollection.Add Method (DataColumn[], DataColumn[])

 

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

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

abstract Add : 
        parentColumns:DataColumn[] *
        childColumns:DataColumn[] -> DataRelation
override Add : 
        parentColumns:DataColumn[] *
        childColumns:DataColumn[] -> DataRelation

Parameters

parentColumns
Type: System.Data.DataColumn[]

The parent columns of the relation.

childColumns
Type: System.Data.DataColumn[]

The child columns of the relation.

Return Value

Type: System.Data.DataRelation

The created relation.

Exception Condition
ArgumentNullException

The relation argument 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 same name. (The comparison is not case sensitive.)

InvalidConstraintException

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

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
Available since 1.1
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