UniqueConstraint::Equals Method (Object^)
.NET Framework (current version)
Compares this constraint to a second to determine if both are identical.
Assembly: System.Data (in System.Data.dll)
Parameters
- key2
-
Type:
System::Object^
The object to which this UniqueConstraint is compared.
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( _ constraintCustomerOrders.Equals(constraintOrderDetails).ToString()) End Sub
.NET Framework
Available since 1.1
Available since 1.1
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