SqlCeReplication.EndSynchronize メソッドとは何？わかりやすく解説 Weblio辞書

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.NET Framework クラスライブラリリファレンス

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SqlCeReplication.EndSynchronize メソッド

BeginSynchronize メソッドを呼び出して開始した非同期データの同期化を終了します。

名前空間: System.Data.SqlServerCe
アセンブリ: System.Data.SqlServerCe (system.data.sqlserverce.dll 内)
構文

Visual Basic (宣言)

Public Sub EndSynchronize ( _
    ar As IAsyncResult _
)

Visual Basic (使用法)

Dim instance As SqlCeReplication
Dim ar As IAsyncResult

instance.EndSynchronize(ar)

public void EndSynchronize (
    IAsyncResult ar
)

C++

public:
void EndSynchronize (
    IAsyncResult^ ar
)

public void EndSynchronize (
    IAsyncResult ar
)

JScript

public function EndSynchronize (
    ar : IAsyncResult
)

パラメータ

ar: BeginSynchronize メソッドが返す IAsyncResult インターフェイス。

解説

この関数は、非同期データの同期化中のエラーをテストするために、同期の完了時に呼び出します。同期が失敗すると、この関数によって、同期エラーを反映した SqlCeException がスローされます。この関数は、通常、同期の完了時に自動的に呼び出されるユーザーデリゲートから呼び出されます。

SQL Server Mobile における非同期データの同期化の詳細については、SQL Server Mobile Books Online の「非同期データの同期化」を参照してください。

使用例

非同期データを同期化させるために SQL Server Mobile のレプリケーションをセットアップする方法を次の例に示します。

Visual Basic

' Imports System;
' Imports System.Data;
' Imports System.IO;
' Imports System.Data.SqlServerCe;
' Imports System.Windows.Forms;

'/ <summary>
'/ Demonstrates the usage of asynchronous database synchronization
'/ </summary>
Public Class MyForm
    Inherits Form

    Private myUserInterfaceUpdateEvent As EventHandler
    Private tableName As String
    Private percentage As Integer
    Private eventStatus As SyncStatus
    Private repl As SqlCeReplication

    Friend Enum SyncStatus
        PercentComplete
        BeginUpload
        BeginDownload
        SyncComplete
    End Enum 'SyncStatus

    Public Sub New()
        ' InitializeComponent();
        Me.myUserInterfaceUpdateEvent = New
 EventHandler(AddressOf UserInterfaceUpdateEvent)

    End Sub 'New

    Private Sub UserInterfaceUpdateEvent(ByVal
 sender As Object, ByVal
 e As System.EventArgs)
        Select Case Me.eventStatus
            Case SyncStatus.BeginUpload
                'this.labelStatusValue.Text = "Began uploading
 table : " & tableName;

            Case SyncStatus.PercentComplete
                'this.labelStatusValue.Text = "Sync with SQL Server
 is " & percentage.ToString() & "% complete.";

            Case SyncStatus.BeginDownload
                'this.labelStatusValue.Text = "Began downloading
 table : " & tableName;

            Case SyncStatus.SyncComplete
                'this.labelStatusValue.Text = "Synchronization
 has completed successfully";
                'this.labelLastSyncValue.Text = GetLastSuccessfulSyncTime().ToString();
        End Select
    End Sub 'UserInterfaceUpdateEvent

    Public Sub SyncCompletedCallback(ByVal
 ar As IAsyncResult)
        Try
            Dim repl As SqlCeReplication =
 CType(ar.AsyncState, SqlCeReplication)

            repl.EndSynchronize(ar)
            repl.SaveProperties()

            Me.eventStatus = SyncStatus.SyncComplete
        Catch e As SqlCeException
            MessageBox.Show(e.Message)
        Finally
            ' NOTE: If you'd like to set Control properties from within
 this 
            ' method, you need to use Control.Invoke method in order
 to marshal
            ' the call to the UI thread; otherwise you might deadlock
 your 
            ' application; See Control.Invoke documentation for more
 information
            '
            Me.Invoke(Me.myUserInterfaceUpdateEvent)
        End Try

    End Sub 'SyncCompletedCallback

    Public Sub OnStartTableUploadCallback(ByVal
 ar As IAsyncResult, ByVal tableName As
 String)
        Me.tableName = tableName
        Me.eventStatus = SyncStatus.BeginUpload

        ' NOTE: If you'd like to set Control properties from within
 this 
        ' method, you need to use Control.Invoke method in order to
 marshal
        ' the call to the UI thread; otherwise you might deadlock your
 
        ' application; See Control.Invoke documentation for more information
        '
        Me.Invoke(Me.myUserInterfaceUpdateEvent)

    End Sub 'OnStartTableUploadCallback

    Public Sub OnSynchronizationCallback(ByVal
 ar As IAsyncResult, ByVal percentComplete
 As Integer)
        Me.percentage = percentComplete
        Me.eventStatus = SyncStatus.PercentComplete

        ' NOTE: If you'd like to set Control properties from within
 this 
        ' method, you need to use Control.Invoke method in order to
 marshal
        ' the call to the UI thread; otherwise you might deadlock your
 
        ' application; See Control.Invoke documentation for more information
        '
        Me.Invoke(Me.myUserInterfaceUpdateEvent)

    End Sub 'OnSynchronizationCallback

    Public Sub OnStartTableDownloadCallback(ByVal
 ar As IAsyncResult, ByVal tableName As
 String)
        Me.tableName = tableName
        Me.eventStatus = SyncStatus.BeginDownload

        ' NOTE: If you'd like to set Control properties from within
 this 
        ' method, you need to use Control.Invoke method in order to
 marshal
        ' the call to the UI thread; otherwise you might deadlock your
 
        ' application; See Control.Invoke documentation for more information
        '
        Me.Invoke(Me.myUserInterfaceUpdateEvent)

    End Sub 'OnStartTableDownloadCallback

    Private Sub ButtonSynchronize_Click(ByVal
 sender As Object, ByVal
 e As System.EventArgs)
        Try
            Me.repl = New SqlCeReplication()
            repl.SubscriberConnectionString = "Data Source=Test.sdf"

            If False = File.Exists("Test.sdf")
 Then
                repl.AddSubscription(AddOption.CreateDatabase)
                repl.PublisherSecurityMode = SecurityType.DBAuthentication
                repl.Publisher = "MyPublisher"
                repl.PublisherLogin = "PublisherLogin"
                repl.PublisherPassword = "<Password>"
                repl.PublisherDatabase = "AdventureWorksDW"
                repl.Publication = "AdventureWorksDW"
                repl.InternetUrl = "http://www.adventure-works.com/sqlmobile/sqlcesa30.dll"
                repl.InternetLogin = "InternetLogin"
                repl.InternetPassword = "<Password>"
                repl.Subscriber = "MySubscriber"
            Else
                repl.LoadProperties()
            End If

            Dim ar As IAsyncResult = repl.BeginSynchronize(
 _
                New AsyncCallback(AddressOf
 Me.SyncCompletedCallback), _
                New OnStartTableUpload(AddressOf
 Me.OnStartTableUploadCallback), _
                New OnStartTableDownload(AddressOf
 Me.OnStartTableDownloadCallback), _
                New OnSynchronization(AddressOf
 Me.OnSynchronizationCallback), repl)

        Catch ex As SqlCeException
            MessageBox.Show(ex.Message)
        End Try

    End Sub 'ButtonSynchronize_Click

    Public Function GetLastSuccessfulSyncTime()
 As DateTime
        Dim utcDateTime As DateTime
        Dim localDateTime As DateTime

        Dim conn As SqlCeConnection = Nothing
        Dim cmd As SqlCeCommand = Nothing

        Try
            conn = New SqlCeConnection("Data
 Source = Test.sdf")
            conn.Open()

            cmd = conn.CreateCommand()
            cmd.CommandText = "SELECT LastSuccessfulSync FROM
 __sysMergeSubscriptions " & _
                "WHERE Publication=@publication"

            cmd.Parameters.Add("@publication", SqlDbType.NVarChar,
 4000)
            cmd.Parameters("@publication").Value =
 "AdventureWorksDW"

            utcDateTime = CType(cmd.ExecuteScalar(), DateTime)
            localDateTime = utcDateTime.ToLocalTime()

            Return localDateTime
        Finally
            conn.Close()
        End Try

    End Function 'GetLastSuccessfulSyncTime
End Class 'MyForm

// using System;
// using System.Data;
// using System.IO;
// using System.Data.SqlServerCe;
// using System.Windows.Forms;

/// <summary>
/// Demonstrates the usage of asynchronous database synchronization
/// </summary>
public class MyForm : Form
{
    private string tableName;
    private int percentage;
    private SyncStatus eventStatus;
    private SqlCeReplication repl;
    private EventHandler myUserInterfaceUpdateEvent;

    internal enum SyncStatus
    {
        PercentComplete,
        BeginUpload,
        BeginDownload,
        SyncComplete
    }

    public MyForm()
    {
        // InitializeComponent();
        this.myUserInterfaceUpdateEvent = new
 EventHandler(MyUserInterfaceUpdateEvent);
    }

    private void MyUserInterfaceUpdateEvent(object
 sender, System.EventArgs e)
    {
        switch (this.eventStatus)
        {
            case SyncStatus.BeginUpload:
                //this.labelStatusValue.Text = "Began uploading
 table : " + tableName;
                break;

            case SyncStatus.PercentComplete:
                //this.labelStatusValue.Text = "Sync with SQL Server
 is " + percentage.ToString() + "% complete.";
                break;

            case SyncStatus.BeginDownload:
                //this.labelStatusValue.Text = "Began downloading
 table : " + tableName;
                break;

            case SyncStatus.SyncComplete:
                //this.labelStatusValue.Text = "Synchronization
 has completed successfully";
                //this.labelLastSyncValue.Text = GetLastSuccessfulSyncTime().ToString();
                break;
        }
    }

    public void SyncCompletedCallback(IAsyncResult
 ar)
    {
        try
        {
            SqlCeReplication repl = (SqlCeReplication)ar.AsyncState;

            repl.EndSynchronize(ar);
            repl.SaveProperties();

            this.eventStatus = SyncStatus.SyncComplete;
        }
        catch (SqlCeException e)
        {
            MessageBox.Show(e.Message);
        }
        finally
        {
            // NOTE: If you'd like to set Control properties from within
 this 
            // method, you need to use Control.Invoke method in order
 to marshal
            // the call to the UI thread; otherwise you might deadlock
 your 
            // application; See Control.Invoke documentation for more
 information
            //
            this.Invoke(this.myUserInterfaceUpdateEvent);
        }
    }

    public void OnStartTableUploadCallback(IAsyncResult
 ar, string tableName)
    {
        this.tableName = tableName;
        this.eventStatus = SyncStatus.BeginUpload;

        // NOTE: If you'd like to set Control properties from within
 this 
        // method, you need to use Control.Invoke method in order to
 marshal
        // the call to the UI thread; otherwise you might deadlock your
 
        // application; See Control.Invoke documentation for more information
        //
        this.Invoke(this.myUserInterfaceUpdateEvent);
    }

    public void OnSynchronizationCallback(IAsyncResult
 ar, int percentComplete)
    {
        this.percentage = percentComplete;
        this.eventStatus = SyncStatus.PercentComplete;

        // NOTE: If you'd like to set Control properties from within
 this 
        // method, you need to use Control.Invoke method in order to
 marshal
        // the call to the UI thread; otherwise you might deadlock your
 
        // application; See Control.Invoke documentation for more information
        //
        this.Invoke(this.myUserInterfaceUpdateEvent);
    }

    public void OnStartTableDownloadCallback(IAsyncResult
 ar, string tableName)
    {
        this.tableName = tableName;
        this.eventStatus = SyncStatus.BeginDownload;

        // NOTE: If you'd like to set Control properties from within
 this 
        // method, you need to use Control.Invoke method in order to
 marshal
        // the call to the UI thread; otherwise you might deadlock your
 
        // application; See Control.Invoke documentation for more information
        //
        this.Invoke(this.myUserInterfaceUpdateEvent);
    }

    private void ButtonSynchronize_Click(object
 sender, System.EventArgs e)
    {
        try
        {
            this.repl = new SqlCeReplication();
            repl.SubscriberConnectionString = "Data Source=Test.sdf";

            if (false == File.Exists("Test.sdf"))
            {
                repl.AddSubscription(AddOption.CreateDatabase);
                repl.PublisherSecurityMode = SecurityType.DBAuthentication;
                repl.Publisher = "MyPublisher";
                repl.PublisherLogin = "PublisherLogin";
                repl.PublisherPassword = "<Password>";
                repl.PublisherDatabase = "AdventureWorksDW";
                repl.Publication = "AdventureWorksDW";
                repl.InternetUrl = "http://www.adventure-works.com/sqlmobile/sqlcesa30.dll";
                repl.InternetLogin = "MyInternetLogin";
                repl.InternetPassword = "<Password";
                repl.Subscriber = "MySubscriber";
            }
            else
            {
                repl.LoadProperties();
            }

            IAsyncResult ar = repl.BeginSynchronize(
                new AsyncCallback(this.SyncCompletedCallback)
,
                new OnStartTableUpload(this.OnStartTableUploadCallback)
,
                new OnStartTableDownload(this.OnStartTableDownloadCallback)
,
                new OnSynchronization(this.OnSynchronizationCallback),
 
                repl);
        }
        catch (SqlCeException ex)
        {
            MessageBox.Show(ex.Message);
        }
    }

    public DateTime GetLastSuccessfulSyncTime()
    {
        DateTime utcDateTime;
        DateTime localDateTime;
        SqlCeConnection conn = null;
        SqlCeCommand cmd = null;

        try
        {
            conn = new SqlCeConnection("Data Source = Test.sdf");
            conn.Open();

            cmd = conn.CreateCommand();
            cmd.CommandText = "SELECT LastSuccessfulSync FROM __sysMergeSubscriptions
 " +
                "WHERE Publication=@publication";

            cmd.Parameters.Add("@publication", SqlDbType.NVarChar, 4000);
            cmd.Parameters["@publication"].Value = "AdventureWorksDW";

            utcDateTime = (DateTime)cmd.ExecuteScalar();
            localDateTime = utcDateTime.ToLocalTime();

            return localDateTime;
        }
        finally
        {
            conn.Close();
        }
    }
}

.NET Framework のセキュリティ

直前の呼び出し元に対する完全な信頼。このメンバは、部分的に信頼されているコードから使用することはできません。詳細については、「」を参照してください。

プラットフォーム

Windows CE, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows XP Professional x64 Edition, Windows XP SP2

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Compact Framework
サポート対象 : 2.0

参照

関連項目
SqlCeReplication クラス
SqlCeReplication メンバ
System.Data.SqlServerCe 名前空間

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SqlCeReplication.EndSynchronize メソッドとは？ わかりやすく解説

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SqlCeReplication.EndSynchronize メソッドとは？わかりやすく解説