CommittableTransaction Costruttori

Definizione

Inizializza una nuova istanza della classe CommittableTransaction.Initializes a new instance of the CommittableTransaction class.

Overload

CommittableTransaction()

Inizializza una nuova istanza della classe CommittableTransaction.Initializes a new instance of the CommittableTransaction class.

CommittableTransaction(TimeSpan)

Inizializza una nuova istanza della classe CommittableTransaction con il valore timeout specificato.Initializes a new instance of the CommittableTransaction class with the specified timeout value.

CommittableTransaction(TransactionOptions)

Inizializza una nuova istanza della classe CommittableTransaction con le opzioni di transazione specificate.Initializes a new instance of the CommittableTransaction class with the specified transaction options.

CommittableTransaction()

Inizializza una nuova istanza della classe CommittableTransaction.Initializes a new instance of the CommittableTransaction class.

public:
 CommittableTransaction();
public CommittableTransaction ();
Public Sub New ()

Eccezioni

Tentativo di creare una transazione in Windows 98, Windows 98 Second Edition o Windows Millennium Edition.An attempt to create a transaction under Windows 98, Windows 98 Second Edition or Windows Millennium Edition.

Esempio

Nell'esempio seguente viene creata una nuova istanza di e ne viene eseguito il CommittableTransaction commit.The following sample creates a new instance of CommittableTransaction and commits it.

//Create a committable transaction
tx = new CommittableTransaction();

SqlConnection myConnection = new SqlConnection("server=(local)\\SQLExpress;Integrated Security=SSPI;database=northwind");
SqlCommand myCommand = new SqlCommand();

//Open the SQL connection
myConnection.Open();

//Give the transaction to SQL to enlist with
myConnection.EnlistTransaction(tx);

myCommand.Connection = myConnection;

// Restore database to near it's original condition so sample will work correctly.
myCommand.CommandText = "DELETE FROM Region WHERE (RegionID = 100) OR (RegionID = 101)";
myCommand.ExecuteNonQuery();

// Insert the first record.
myCommand.CommandText = "Insert into Region (RegionID, RegionDescription) VALUES (100, 'MidWestern')";
myCommand.ExecuteNonQuery();

// Insert the second record.
myCommand.CommandText = "Insert into Region (RegionID, RegionDescription) VALUES (101, 'MidEastern')";
myCommand.ExecuteNonQuery();

// Commit or rollback the transaction
while (true)
{
    Console.Write("Commit or Rollback? [C|R] ");
    ConsoleKeyInfo c = Console.ReadKey();
    Console.WriteLine();

    if ((c.KeyChar == 'C') || (c.KeyChar == 'c'))
    {
        tx.Commit();
        break;
    }
    else if ((c.KeyChar == 'R') || (c.KeyChar == 'r'))
    {
        tx.Rollback();
        break;
    }
}
myConnection.Close();
tx = null;
tx = New CommittableTransaction

Dim myConnection As New SqlConnection("server=(local)\SQLExpress;Integrated Security=SSPI;database=northwind")
Dim myCommand As New SqlCommand()

'Open the SQL connection
myConnection.Open()

'Give the transaction to SQL to enlist with
myConnection.EnlistTransaction(tx)

myCommand.Connection = myConnection

'Restore database to near it's original condition so sample will work correctly.
myCommand.CommandText = "DELETE FROM Region WHERE (RegionID = 100) OR (RegionID = 101)"
myCommand.ExecuteNonQuery()

'Insert the first record.
myCommand.CommandText = "Insert into Region (RegionID, RegionDescription) VALUES (100, 'MidWestern')"
myCommand.ExecuteNonQuery()

'Insert the second record.
myCommand.CommandText = "Insert into Region (RegionID, RegionDescription) VALUES (101, 'MidEastern')"
myCommand.ExecuteNonQuery()

'Commit or rollback the transaction
Dim c As ConsoleKeyInfo
While (True)
    Console.Write("Commit or Rollback? [C|R] ")
    c = Console.ReadKey()
    Console.WriteLine()

    If (c.KeyChar = "C") Or (c.KeyChar = "c") Then
        tx.Commit()
        Exit While
    ElseIf ((c.KeyChar = "R") Or (c.KeyChar = "r")) Then
        tx.Rollback()
        Exit While
    End If
End While

myConnection.Close()
tx = Nothing

Si applica a

CommittableTransaction(TimeSpan)

Inizializza una nuova istanza della classe CommittableTransaction con il valore timeout specificato.Initializes a new instance of the CommittableTransaction class with the specified timeout value.

public:
 CommittableTransaction(TimeSpan timeout);
public CommittableTransaction (TimeSpan timeout);
new System.Transactions.CommittableTransaction : TimeSpan -> System.Transactions.CommittableTransaction
Public Sub New (timeout As TimeSpan)

Parametri

timeout
TimeSpan

Tempo massimo di esistenza della transazione prima della sua interruzione.The maximum amount of time the transaction can exist, before it is aborted.

Eccezioni

Tentativo di creare una transazione in Windows 98, Windows 98 Second Edition o Windows Millennium Edition.An attempt to create a transaction under Windows 98, Windows 98 Second Edition or Windows Millennium Edition.

Si applica a

CommittableTransaction(TransactionOptions)

Inizializza una nuova istanza della classe CommittableTransaction con le opzioni di transazione specificate.Initializes a new instance of the CommittableTransaction class with the specified transaction options.

public:
 CommittableTransaction(System::Transactions::TransactionOptions options);
public CommittableTransaction (System.Transactions.TransactionOptions options);
new System.Transactions.CommittableTransaction : System.Transactions.TransactionOptions -> System.Transactions.CommittableTransaction
Public Sub New (options As TransactionOptions)

Parametri

options
TransactionOptions

Struttura TransactionOptions che descrive le opzioni di transazione da utilizzare per la nuova transazione.A TransactionOptions structure that describes the transaction options to use for the new transaction.

Eccezioni

Tentativo di creare una transazione in Windows 98, Windows 98 Second Edition o Windows Millennium Edition.An attempt to create a transaction under Windows 98, Windows 98 Second Edition or Windows Millennium Edition.

options non è valido.options is invalid.

Esempio

Nell'esempio seguente viene creata una nuova istanza di CommittableTransaction con le opzioni e viene interrotta.The following sample creates a new instance of CommittableTransaction with options, and aborts it.

Si applica a