Classe ForeignKeyCollection
The ForeignKeyCollection class represents a collection of ForeignKey objects that represent all the foreign keys defined on the parent object.
Gerarchia di ereditarietà
System.Object
Microsoft.SqlServer.Management.Smo.AbstractCollectionBase
Microsoft.SqlServer.Management.Smo.SmoCollectionBase
Microsoft.SqlServer.Management.Smo.SortedListCollectionBase
Microsoft.SqlServer.Management.Smo.SimpleObjectCollectionBase
Microsoft.SqlServer.Management.Smo.ForeignKeyCollection
Spazio dei nomi Microsoft.SqlServer.Management.Smo
Assembly: Microsoft.SqlServer.Smo (in Microsoft.SqlServer.Smo.dll)
Sintassi
'Dichiarazione
Public NotInheritable Class ForeignKeyCollection _
Inherits SimpleObjectCollectionBase
'Utilizzo
Dim instance As ForeignKeyCollection
public sealed class ForeignKeyCollection : SimpleObjectCollectionBase
public ref class ForeignKeyCollection sealed : public SimpleObjectCollectionBase
[<SealedAttribute>]
type ForeignKeyCollection =
class
inherit SimpleObjectCollectionBase
end
public final class ForeignKeyCollection extends SimpleObjectCollectionBase
Nel tipo ForeignKeyCollection sono esposti i membri seguenti.
Proprietà
Nome | Descrizione | |
---|---|---|
Count | Gets the number of objects in the referenced collection. Ereditato da SmoCollectionBase. | |
IsSynchronized | Gets the Boolean property value that specifies whether access to the collection is synchronized and therefore thread-safe. Ereditato da SmoCollectionBase. | |
Item[Int32] | Gets a ForeignKey object in the collection by index number. | |
Item[String] | Gets a ForeignKey object in the collection by name. | |
Parent | Gets the Table object that is the parent of the ForeignKeyCollection object. | |
SyncRoot | Gets an object that can be used to synchronize access to the collection. Ereditato da SmoCollectionBase. |
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Metodi
Nome | Descrizione | |
---|---|---|
Add | Adds a ForeignKey object to the foreign key collection. | |
AddExisting | Adds an object to the collection. Ereditato da AbstractCollectionBase. | |
Contains | Verifies whether the specified object exists in the collection. Ereditato da SimpleObjectCollectionBase. | |
CopyTo | Copies the collection objects to a one-dimensional array beginning at the index value specified. | |
Equals | Ereditato da Object. | |
GetEnumerator | Returns an IEnumerator interface that allows you to iterate through the objects in the collection. Ereditato da SmoCollectionBase. | |
GetHashCode | Ereditato da Object. | |
GetType | Ereditato da Object. | |
ItemById | Extracts a member from the ForeignKeyCollection collection using a system-defined, unique identifier. | |
Refresh() | Refreshes the referenced collection. Ereditato da SmoCollectionBase. | |
Refresh(Boolean) | Refreshes the referenced collection with the option to refresh child objects of the referenced collection. Ereditato da SmoCollectionBase. | |
Remove(String) | Removes a ForeignKey object from the foreign key collection. | |
Remove(ForeignKey) | Removes a ForeignKey object from the foreign key collection. | |
ToString | Ereditato da Object. |
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Campi
Nome | Descrizione | |
---|---|---|
initialized | This value supports the SMO infrastructure and is not intended to be used directly from your code. Ereditato da AbstractCollectionBase. |
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Implementazioni esplicite dell'interfaccia
Nome | Descrizione | |
---|---|---|
ICollection.CopyTo | Copies the elements from an instance to an array beginning at the index indicated. Ereditato da SmoCollectionBase. |
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Osservazioni
A ForeignKeyCollection object can be used to gain access to a set of foreign keys. You can use the Item property to return a specific ForeignKey object.
Thread Safety
Tutti i membri statici pubblici (Shared in Microsoft Visual Basic) di questo tipo sono sicuri per le operazioni a thread multipli. Non è invece garantita la sicurezza dei membri dell'istanza.
Esempi
Protezione dei thread
I membri static (Shared in Visual Basic) pubblici di questo tipo sono affidabili. Non è invece garantita la sicurezza dei membri dell'istanza.