UniqueConstraint::Equals Method (Object^)


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Compares this constraint to a second to determine if both are identical.

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

virtual bool Equals(
	Object^ key2
) override


Type: System::Object^

The object to which this UniqueConstraint is compared.

Return Value

Type: System::Boolean

true, if the contraints are equal; otherwise, false.

Two constraints are equal if they constrain the same columns.

The following example compares two UiqueConstraint objects.

Private Sub CompareConstraints()
    Dim constraintCustomerOrders As UniqueConstraint
    Dim constraintOrderDetails As UniqueConstraint
    Dim relationCustomerOrders As DataRelation
    Dim relationOrderDetails As DataRelation

    ' Get a DataRelation from a DataSet.
    relationCustomerOrders = DataSet1.Relations("CustomerOrders")

    '  Get a constraint.
    constraintCustomerOrders = relationCustomerOrders.ParentKeyConstraint

    ' Get a second relation and constraint.
    relationOrderDetails = DataSet1.Relations("OrderDetails")
    constraintOrderDetails = relationOrderDetails.ParentKeyConstraint

    ' Compare the two.
    Console.WriteLine( _
 End Sub

.NET Framework
Available since 1.1
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