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

.NET Framework 4.5

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)

public virtual DataRelation Add(
	DataColumn[] parentColumns,
	DataColumn[] childColumns
)

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.

Exceptions

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.

Remarks

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

Version Information

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

DataRelationCollection Class

Add Overload

System.Data Namespace

Other Resources

Adding DataRelations (ADO.NET)

Navigating DataRelations (ADO.NET)

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