UniqueConstraint.Equals(Object) Method

Reference

Definition

Namespace:: System.Data

Assemblies:: netstandard.dll, System.Data.Common.dll

Assembly:: System.Data.Common.dll

Assembly:: System.Data.dll

Assembly:: netstandard.dll

Source:: UniqueConstraint.cs

Source:: UniqueConstraint.cs

Source:: UniqueConstraint.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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

Boolean

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

다음을 통해 공유