DataRelation Constructor (String, DataColumn, DataColumn)

 

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

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

new : 
        relationName:string *
        parentColumn:DataColumn *
        childColumn:DataColumn -> DataRelation

Parameters

relationName
Type: System.String

The name of the DataRelation. If null or an empty string (""), a default name will be given when the created object is added to the DataRelationCollection.

parentColumn
Type: System.Data.DataColumn

The parent DataColumn in the relationship.

childColumn
Type: System.Data.DataColumn

The child DataColumn in the relationship.

Exception Condition
ArgumentNullException

One or both of the DataColumn objects contains null.

InvalidConstraintException

The columns have different data types

-Or-

The tables do not belong to the same DataSet.

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

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

.NET Framework
Available since 1.1
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