Classe ColumnCollection
The ColumnCollection class represents a collection of Column objects that represent all the columns defined on a table.
Gerarchia di ereditarietà
System.Object
Microsoft.SqlServer.Management.Smo.AbstractCollectionBase
Microsoft.SqlServer.Management.Smo.SmoCollectionBase
Microsoft.SqlServer.Management.Smo.ArrayListCollectionBase
Microsoft.SqlServer.Management.Smo.ParameterCollectionBase
Microsoft.SqlServer.Management.Smo.ColumnCollection
Spazio dei nomi Microsoft.SqlServer.Management.Smo
Assembly: Microsoft.SqlServer.Smo (in Microsoft.SqlServer.Smo.dll)
Sintassi
'Dichiarazione
Public NotInheritable Class ColumnCollection _
Inherits ParameterCollectionBase
'Utilizzo
Dim instance As ColumnCollection
public sealed class ColumnCollection : ParameterCollectionBase
public ref class ColumnCollection sealed : public ParameterCollectionBase
[<SealedAttribute>]
type ColumnCollection =
class
inherit ParameterCollectionBase
end
public final class ColumnCollection extends ParameterCollectionBase
Nel tipo ColumnCollection 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 Column object in the collection by index number. | |
Item[String] | Gets a Column object in the collection by name. | |
Parent | Gets the SqlSmoObject object that is the parent of the ColumnCollection 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(Column) | Adds a Column object to the ColumnCollection collection. | |
Add(Column, Int32) | Adds a Column object to the ColumnCollection collection at a specified position. | |
Add(Column, String) | Adds a Column object to the ColumnCollection collection after a specified Column object currently in the ColumnCollection collection. | |
AddExisting | Adds an object to the collection. Ereditato da AbstractCollectionBase. | |
Contains | Validates whether the parameter collection contains a member with a name equal to the specified string. Ereditato da ParameterCollectionBase. | |
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 ColumnCollection 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 member from the collection with the specified name. Ereditato da ParameterCollectionBase. | |
Remove(Column) | Removes a Column object from the ColumnCollection 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 ColumnCollection object can be used to gain access to a set of columns. You can use the Item property to return a specific Column 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.