SqlTransaction.Commit 메서드

정의

네임스페이스:

System.Data.SqlClient

어셈블리:

System.Data.dll

데이터베이스 트랜잭션을 커밋합니다.

public:
 override void Commit();

public override void Commit ();

override this.Commit : unit -> unit

Public Overrides Sub Commit ()

예외

Exception

트랜잭션을 커밋하는 동안 오류가 발생한 경우

InvalidOperationException

트랜잭션이 이미 커밋 또는 롤백된 경우

또는

연결이 손상된 경우

예제

다음 예제에서는 및 를 SqlConnectionSqlTransaction만듭니다. 사용 하는 방법을 보여 줍니다 합니다 Commit, BeginTransaction, 및 Rollback 메서드. 트랜잭션은 오류에 대해 롤백됩니다. Try / Catch 오류 처리는 트랜잭션을 커밋하거나 롤백하려고 할 때 오류를 처리하는 데 사용됩니다.

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();

        // 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);
            }
        }
    }
}

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()

        ' 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

설명

메서드는 Commit Transact-SQL COMMIT TRANSACTION 문과 동일합니다. 모든 수정 사항이 데이터베이스의 영구적인 부분이 되었기 때문에 커밋된 후에는 트랜잭션을 롤백할 수 없습니다. 자세한 내용은 COMMIT TRANSACTION(Transact-SQL) 을 참조하세요.

참고

Try / Catch 예외 처리는 를 커밋하거나 롤백 SqlTransaction할 때 항상 사용해야 합니다. 및 Rollback 는 둘 다 Commit 연결이 종료되었거나 트랜잭션이 이미 서버에서 롤백된 경우 를 생성 InvalidOperationException 합니다.

SQL Server 트랜잭션에 대한 자세한 내용은 트랜잭션(Transact-SQL)을 참조하세요.

추가 정보

• 로컬 트랜잭션
• ADO.NET 개요