System.Data Namespace   DataRelation Class

Initializes a new instance of the DataRelation class.

1. Initializes a new instance of the DataRelation class using the specified name, parent, and child columns.

2. Initializes a new instance of the DataRelation class using the specified name, parent and child columns, and a value indicating whether to create constraints.

3. Initializes a new instance of the DataRelation class using the specified name and matched arrays of parent and child columns.

4. Initializes a new instance of the DataRelation class using the specified name, matched arrays of parent and child columns, and a value indicating whether to create constraints.

The following example initializes a new DataRelation and adds it to the DataRelationCollection of a DataSet.

NOTE: This example uses one of the overloaded versions of the DataRelation constructor. For other examples that may be available, see the individual overload topics.

DataRelation categoryId = new DataRelation ( "categoryId", 
   myDataSet.Tables [ "Categories" ].Columns [ "CategoryID" ],
   myDataSet.Tables [ "Products" ].Columns [ "CategoryID" ] );

   // add the relation to the DataSet.
   myDataSet.Relations.Add ( categoryId );

Dim categoryId As New DataRelation ( "categoryId", _
   myDataSet.Tables ( "Categories" ).Columns ( "CategoryID" ), _
   myDataSet.Tables ( "Products" ).Columns ( "CategoryID" ) )

   ' add the relation to the DataSet.
   myDataSet.Relations.Add ( categoryId )

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DataRelation Members