/// <include file='doc\ConstraintCollection.uex' path='docs/doc[@for="ConstraintCollection.BaseRemove"]/*' />
/// <devdoc>
/// Does verification on the constraint and it's name.
/// An ArgumentNullException is thrown if this constraint is null. An ArgumentException is thrown
/// if this constraint doesn't belong to this collection or if this constraint is part of a relationship.
/// </devdoc>
private void BaseRemove(Constraint constraint)
{
if (constraint == null)
{
throw ExceptionBuilder.ArgumentNull("constraint");
}
if (constraint.Table != table)
{
throw ExceptionBuilder.ConstraintRemoveFailed();
}
UnregisterName(constraint.ConstraintName);
constraint.InCollection = false;
}
/// <summary>
/// Does verification on the constraint and it's name.
/// An ArgumentNullException is thrown if this constraint is null. An ArgumentException is thrown
/// if this constraint doesn't belong to this collection or if this constraint is part of a relationship.
/// </summary>
private void BaseRemove(Constraint constraint)
{
if (constraint == null)
{
throw ExceptionBuilder.ArgumentNull(nameof(constraint));
}
if (constraint.Table != _table)
{
throw ExceptionBuilder.ConstraintRemoveFailed();
}
UnregisterName(constraint.ConstraintName);
constraint.InCollection = false;
if (constraint is UniqueConstraint)
{
for (int i = 0; i < Table.ChildRelations.Count; i++)
{
DataRelation rel = Table.ChildRelations[i];
if (rel.ParentKeyConstraint == constraint)
{
rel.SetParentKeyConstraint(null);
}
}
((UniqueConstraint)constraint).ConstraintIndexClear();
}
else if (constraint is ForeignKeyConstraint)
{
for (int i = 0; i < Table.ParentRelations.Count; i++)
{
DataRelation rel = Table.ParentRelations[i];
if (rel.ChildKeyConstraint == constraint)
{
rel.SetChildKeyConstraint(null);
}
}
}
}
