SqlCeCommand.Transaction 속성

SqlCeCommand가 실행되는 트랜잭션을 가져오거나 설정합니다.

네임스페이스:  System.Data.SqlServerCe
어셈블리:  System.Data.SqlServerCe(System.Data.SqlServerCe.dll)

구문

‘선언
Public Property Transaction As SqlCeTransaction
    Get
    Set
‘사용 방법
Dim instance As SqlCeCommand
Dim value As SqlCeTransaction

value = instance.Transaction

instance.Transaction = value

public SqlCeTransaction Transaction { get; set; }

public:
property SqlCeTransaction^ Transaction {
    SqlCeTransaction^ get ();
    void set (SqlCeTransaction^ value);
}

member Transaction : SqlCeTransaction with get, set

function get Transaction () : SqlCeTransaction
function set Transaction (value : SqlCeTransaction)

속성 값

유형: System.Data.SqlServerCe.SqlCeTransaction
SqlCeTransaction 입니다. 기본값은 nullnull 참조(Visual Basic에서는 Nothing)입니다.

주의

Transaction 속성이 이미 특정 값으로 설정되어 있고 명령을 실행하는 중이면 사용자가 이 속성을 설정할 수 없습니다. SqlCeCommand 개체와 같은 SqlCeConnection에 연결되지 않은 SqlCeTransaction 개체로 트랜잭션 속성을 설정하면 다음 번에 문을 실행할 때 예외가 throw됩니다.

SqlCeTransaction이 nullnull 참조(Visual Basic에서는 Nothing)로 설정된 상태에서 SqlCeCommand를 실행하면 해당 명령은 자동 커밋 모드에서 실행되므로 각 문은 자체 트랜잭션에서 실행됩니다.

예

Dim conn As New SqlCeConnection("Data Source = MyDatabase.sdf; Password ='<pwd>'")
conn.Open()

' Start a local transaction
'
Dim tx As SqlCeTransaction = conn.BeginTransaction()

' By default, commands run in auto-commit mode; 
'
Dim cmd1 As SqlCeCommand = conn.CreateCommand()

' You may create multiple commands on the same connection
'
Dim cmd2 As SqlCeCommand = conn.CreateCommand()

' To enlist a command in a transaction, set the Transaction property
'
cmd1.Transaction = tx

Try
    cmd1.CommandText = "INSERT INTO Shippers ([Company Name]) VALUES ('Northwind Traders')"
    cmd1.ExecuteNonQuery()

    ' Auto-commited because cmd2 is not enlisted in a transaction
    '
    cmd2.CommandText = "INSERT INTO Employees ([Last Name], [First Name]) VALUES ('Decker', 'Barbara')"
    cmd2.ExecuteNonQuery()

    ' This will cause referential constraint violation
    '
    cmd1.CommandText = "DELETE FROM Products WHERE [Product ID] = 1"
    cmd1.ExecuteNonQuery()

    ' Commit the changes to disk if everything above succeeded
    '
    tx.Commit()
Catch
    tx.Rollback()
Finally
    conn.Close()
End Try

SqlCeConnection conn = new SqlCeConnection("Data Source = MyDatabase.sdf; Password ='<pwd>'");
conn.Open();

// Start a local transaction
//
SqlCeTransaction tx = conn.BeginTransaction();

// By default, commands run in auto-commit mode; 
//
SqlCeCommand cmd1 = conn.CreateCommand();

// You may create multiple commands on the same connection
//
SqlCeCommand cmd2 = conn.CreateCommand();

// To enlist a command in a transaction, set the Transaction property
//
cmd1.Transaction = tx;

try
{
    cmd1.CommandText = "INSERT INTO Shippers ([Company Name]) VALUES ('Northwind Traders')";
    cmd1.ExecuteNonQuery();

    // Auto-commited because cmd2 is not enlisted in a transaction
    //
    cmd2.CommandText = "INSERT INTO Employees ([Last Name], [First Name]) VALUES ('Decker', 'Barbara')";
    cmd2.ExecuteNonQuery();

    // This will cause referential constraint violation
    //
    cmd1.CommandText = "DELETE FROM Products WHERE [Product ID] = 1";
    cmd1.ExecuteNonQuery();

    // Commit the changes to disk if everything above succeeded
    //
    tx.Commit();
}
catch (Exception)
{
    tx.Rollback();
}
finally
{
    conn.Close();
}

참고 항목

참조

SqlCeCommand 클래스

System.Data.SqlServerCe 네임스페이스