UniqueConstraint.Equals(Object) Method
Definition
Important
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Compares this constraint to a second to determine if both are identical.
public:
override bool Equals(System::Object ^ key2);
public override bool Equals (object? key2);
public override bool Equals (object key2);
override this.Equals : obj -> bool
Public Overrides Function Equals (key2 As Object) As Boolean
Parameters
- key2
- Object
The object to which this UniqueConstraint is compared.
Returns
true
, if the constraints are equal; otherwise, false
.
Examples
The following example compares two UniqueConstraint 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( _
constraintCustomerOrders.Equals(constraintOrderDetails).ToString())
End Sub
Remarks
Two constraints are equal if they constrain the same columns.
Applies to
See also
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