dotConnect for PostgreSQL Documentation
Devart.Common Namespace / DbConnectionBase Class / TransactionStateChanged Event
Example

In This Topic
    TransactionStateChanged Event
    In This Topic
    Occurs when the state of the transaction is changed.
    Syntax
    'Declaration
     
    Public Event TransactionStateChanged As TransactionStateChangedEventHandler
    public event TransactionStateChangedEventHandler TransactionStateChanged
    Event Data

    The event handler receives an argument of type TransactionStateChangedEventArgs containing data related to this event. The following TransactionStateChangedEventArgs properties provide information specific to this event.

    PropertyDescription
    Indicates the operation that is being performed or has been performed in the transaction when the DbTransactionBase.StateChanged or DbTransactionBase.StateChanging event occurs. (Inherited from Devart.Common.TransactionStateChangeEventArgs)
    Example
    This sample demonstrates how to use the TransactionStateChanged and TransactionStateChanging events.
    PgSqlConnection connection = new PgSqlConnection(
         "host=server;database=test;user id=postgres;");
         connection.TransactionStateChanged += new TransactionStateChangedEventHandler(connection_TransactionStateChanged);
         connection.TransactionStateChanging += new TransactionStateChangingEventHandler(connection_TransactionStateChanging);
         connection.Open();
    
         // ...
    PgSqlTransaction tr = connection.BeginTransaction();
         // ...
         tr.Commit();
         // ...
    
    void connection_TransactionStateChanging(object sender, TransactionStateChangingEventArgs e) {
    
            if (e.Action == TransactionAction.Commit) {
                    // do somthing...
            }
    }
    
    void connection_TransactionStateChanged(object sender, TransactionStateChangedEventArgs e) {
         
            if (e.Action == TransactionAction.Commit) {
                    // do somthing...
            }
    }
    Dim connection As New PgSqlConnection( _
        "host=server;database=test;user id=postgres;")
    AddHandler connection.TransactionStateChanged, New TransactionStateChangedEventHandler(AddressOf &_ Me.connection_TransactionStateChanged)
            AddHandler connection.TransactionStateChanging, New TransactionStateChangingEventHandler(AddressOf &_ Me.connection_TransactionStateChanging)
            connection.Open()
            '...
            Dim Transaction As PgSqlTransaction
            Transaction = connection.BeginTransaction()
            '...
            Transaction.Commit()
            '...
    
            Private Sub connection_TransactionStateChanged(ByVal sender As Object, ByVal e As TransactionStateChangedEventArgs)
            If (e.Action = TransactionAction.Commit) Then
                    '...
            End If
    End Sub
    
    Private Sub connection_TransactionStateChanging(ByVal sender As Object, ByVal e As TransactionStateChangingEventArgs)
            If (e.Action = TransactionAction.Commit) Then
                    '...
            End If
    End Sub
    Requirements

    Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

    See Also