IDbTransaction.Commit メソッド
アセンブリ: System.Data (system.data.dll 内)



派生クラス SqlConnection および SqlTransaction のインスタンスを作成する例を次に示します。Commit、BeginTransaction、Rollback の各メソッドの使い方も示します。
Private Sub ExecuteSqlTransaction(ByVal connectionString As String) Using connection As New SqlConnection(connectionString) connection.Open() Dim command As SqlCommand = connection.CreateCommand() Dim transaction As SqlTransaction ' Start a local transaction transaction = connection.BeginTransaction("SampleTransaction") ' Must assign both transaction object and connection ' to Command object for a pending local transaction. command.Connection = connection command.Transaction = transaction Try command.CommandText = _ "Insert into Region (RegionID, RegionDescription) VALUES (100, 'Description')" command.ExecuteNonQuery() command.CommandText = _ "Insert into Region (RegionID, RegionDescription) VALUES (101, 'Description')" command.ExecuteNonQuery() ' Attempt to commit the transaction. transaction.Commit() Console.WriteLine("Both records are written to database.") Catch ex As Exception Console.WriteLine("Commit Exception Type: {0}", ex.GetType()) Console.WriteLine(" Message: {0}", ex.Message) ' Attempt to roll back the transaction. Try transaction.Rollback() Catch ex2 As Exception ' This catch block will handle any errors that may have occurred ' on the server that would cause the rollback to fail, such as ' a closed connection. Console.WriteLine("Rollback Exception Type: {0}", ex2.GetType()) Console.WriteLine(" Message: {0}", ex2.Message) End Try End Try End Using End Sub
private static void ExecuteSqlTransaction(string connectionString) { using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); SqlCommand command = connection.CreateCommand(); SqlTransaction transaction; // Start a local transaction. transaction = connection.BeginTransaction("SampleTransaction"); // Must assign both transaction object and connection // to Command object for a pending local transaction command.Connection = connection; command.Transaction = transaction; try { command.CommandText = "Insert into Region (RegionID, RegionDescription) VALUES (100, 'Description')"; command.ExecuteNonQuery(); command.CommandText = "Insert into Region (RegionID, RegionDescription) VALUES (101, 'Description')"; command.ExecuteNonQuery(); // Attempt to commit the transaction. transaction.Commit(); Console.WriteLine("Both records are written to database."); } catch (Exception ex) { Console.WriteLine("Commit Exception Type: {0}", ex.GetType()); Console.WriteLine(" Message: {0}", ex.Message); // Attempt to roll back the transaction. try { transaction.Rollback(); } catch (Exception ex2) { // This catch block will handle any errors that may have occurred // on the server that would cause the rollback to fail, such as // a closed connection. Console.WriteLine("Rollback Exception Type: {0}", ex2.GetType()); Console.WriteLine(" Message: {0}", ex2.Message); } } } }

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
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