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

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

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

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

Parameters

name
Type: System.String

The name of the DataRelation to create.

parentColumns
Type: System.Data.DataColumn[]

An array of parent DataColumn objects.

childColumns
Type: System.Data.DataColumn[]

An array of child DataColumn objects.

Return Value

Type: System.Data.DataRelation
The created DataRelation.

ExceptionCondition
ArgumentNullException

The relation name 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.

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.

No code example is currently available or this language may not be supported.

.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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