DataRelationCollection.Add Method (String, DataColumn, DataColumn, Boolean)
Creates a DataRelation with the specified name, parent and child columns, with optional constraints according to the value of the createConstraints parameter, and adds it to the collection.
Namespace: System.Data
Assembly: System.Data (in System.Data.dll)
'Declaration Public Overridable Function Add ( _ name As String, _ parentColumn As DataColumn, _ childColumn As DataColumn, _ createConstraints As Boolean _ ) As DataRelation
Parameters
- name
- Type: System.String
The name of the relation.
- parentColumn
- Type: System.Data.DataColumn
The parent column of the relation.
- childColumn
- Type: System.Data.DataColumn
The child column of the relation.
- createConstraints
- Type: System.Boolean
true to create constraints; otherwise false. (The default is true).
When a DataRelation object is added to the collection, ForeignKeyConstraint and UniqueConstraint objects are created by default if they do not already exist. To prevent this, you can set createConstraints to false.
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.
