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SQL Anywhere 11.0.1 (Français) » UltraLite - .NET Programming » UltraLite .NET 2.0 API reference » ULActiveSyncListener interface

 

ActiveSyncInvoked method

Invoked when the MobiLink provider for ActiveSync calls the application to perform synchronization.

Syntax
Visual Basic
Public Sub ActiveSyncInvoked( _
   ByVal launchedByProvider As Boolean _
)
C#
public void ActiveSyncInvoked(
   bool launchedByProvider
);
Parameters
  • launchedByProvider   True if the application was launched by the MobiLink provider to perform ActiveSync synchronization. The application must then shut itself down after it has finished synchronizing. False if the application was already running when called by the MobiLink provider for ActiveSync.

Remarks

This method is invoked by a separate thread. To avoid multi-threading issues, it should post an event to the UI. If you are using multi-threading, it is recommended that you use a separate connection and use the lock keyword to access any objects shared with the rest of the application.

Once synchronization has completed, applications should call ULDatabaseManager.SignalSyncIsComplete() to signal the MobiLink provider for ActiveSync.

Example

The following code fragments demonstrate how to receive an ActiveSync request and perform a synchronization in the UI thread.

' Visual Basic
Imports iAnywhere.Data.UltraLite
   
Public Class MainWindow
  Inherits System.Windows.Forms.Form
  Implements ULActiveSyncListener
  Private conn As ULConnection

  Public Sub New(ByVal args() As String)

    MyBase.New()

    'This call is required by the Windows Form Designer.
    InitializeComponent()

    'Add any initialization after the InitializeComponent() call
    ULConnection.DatabaseManager.SetActiveSyncListener( _
        "myCompany.myapp", Me _
      )
    'Create Connection
    ...
  End Sub

  Protected Overrides Sub OnClosing( _
        ByVal e As System.ComponentModel.CancelEventArgs _
      )
    ULConnection.DatabaseManager.SetActiveSyncListener( _
        Nothing, Nothing _
      )
    MyBase.OnClosing(e)
  End Sub

  Public Sub ActiveSyncInvoked( _
        ByVal launchedByProvider As Boolean _
      ) Implements ULActiveSyncListener.ActiveSyncInvoked
    Me.Invoke(New EventHandler(AddressOf Me.ActiveSyncAction))
  End Sub

  Public Sub ActiveSyncAction( _
        ByVal sender As Object, ByVal e As EventArgs _
      )
    ' Do active sync
    conn.Synchronize()
    ULConnection.DatabaseManager.SignalSyncIsComplete()
  End Sub
End Class
// C#
using iAnywhere.Data.UltraLite;
public class Form1 : System.Windows.Forms.Form, ULActiveSyncListener
{
  private System.Windows.Forms.MainMenu mainMenu1;
  private ULConnection conn;

  public Form1()
  {
    //
    // Required for Windows Form Designer support
    //
    InitializeComponent();

    //
    // TODO: Add any constructor code after
    // InitializeComponent call
    //
    ULConnection.DatabaseManager.SetActiveSyncListener(
        "myCompany.myapp", this
      );
    // Create connection
    ...
  }

  protected override void Dispose( bool disposing )
  {
    base.Dispose( disposing );
  }

  protected override void OnClosing(
      System.ComponentModel.CancelEventArgs e
    )
  {
    ULConnection.DatabaseManager.SetActiveSyncListener(
        null, null
      );
    base.OnClosing(e);
  }

  public void ActiveSyncInvoked(bool launchedByProvider)
  {
    this.Invoke( new EventHandler( ActiveSyncHandler ) );
  }

  internal void ActiveSyncHandler(object sender, EventArgs e)
  {
    conn.Synchronize();
    ULConnection.DatabaseManager.SignalSyncIsComplete();
  }
}
See also