Remove Method (Constraint)
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ConstraintCollection.Remove Method (Constraint)


Removes the specified Constraint from the collection.

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

Public Sub Remove (
	constraint As Constraint


Type: System.Data.Constraint

The Constraint to remove.

Exception Condition

The constraint argument is null.


The constraint does not belong to the collection.

Before using the Remove method, you can use the Contains method to determine whether the collection contains the target Constraint, and the CanRemove method to determine whether a Constraint can be removed.

The CollectionChanged event occurs if the constraint is successfully removed.

Private Sub RemoveConstraint(table As DataTable, _
    constraint As Constraint)

    If table.Constraints.Contains(constraint.ConstraintName) Then
        If table.Constraints.CanRemove(constraint) Then
        End If
    End If
End Sub

.NET Framework
Available since 1.1
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