DbConnectionFailure 事件

套用變更期間資料庫連接失敗時發生。

命名空間：  Microsoft.Synchronization.Data
組件：  Microsoft.Synchronization.Data (在 Microsoft.Synchronization.Data.dll 中)

語法

'宣告
Public Event DbConnectionFailure As EventHandler(Of DbConnectionFailureEventArgs)
'用途
Dim instance As RelationalSyncProvider
Dim handler As EventHandler(Of DbConnectionFailureEventArgs)

AddHandler instance.DbConnectionFailure, handler

public event EventHandler<DbConnectionFailureEventArgs> DbConnectionFailure

public:
 event EventHandler<DbConnectionFailureEventArgs^>^ DbConnectionFailure {
    void add (EventHandler<DbConnectionFailureEventArgs^>^ value);
    void remove (EventHandler<DbConnectionFailureEventArgs^>^ value);
}

member DbConnectionFailure : IEvent<EventHandler<DbConnectionFailureEventArgs>,
    DbConnectionFailureEventArgs>

備註

這個事件可用來覆寫在共用系統上 (例如 SQL Azure) 設定資料庫連接節流時所採取的預設動作。可以註冊同步處理應用程式來處理這個事件，而且可以決定是否要重試交易或取消同步處理。

範例

以下範例示範 DbConnectionFailure 事件處理常式。此事件處理常式會檢查重試的次數並覆寫預設值，重試變更套用 10 次之後再停止同步處理。

       static void HandleDbConnectionFailure(object sender, DbConnectionFailureEventArgs e)
       {
            // Override the default to retry 10 times before fail.
           if (e.ApplyTransactionRetry < 10)
           {
               e.Action = DbConnectionFailureAction.Retry;
           }
           else
           {
               e.Action = DbConnectionFailureAction.AbortSync;
           }
       }

Private Shared Sub HandleDbConnectionFailure(ByVal sender As Object, ByVal e As DbConnectionFailureEventArgs)
    ' Override the default to retry 10 times before fail.
    If e.ApplyTransactionRetry < 10 Then
        e.Action = DbConnectionFailureAction.Retry
    Else
        e.Action = DbConnectionFailureAction.AbortSync
    End If
End Sub

請參閱

參考

RelationalSyncProvider類別

RelationalSyncProvider 成員

Microsoft.Synchronization.Data 命名空間

其他資源

HOW TO：設定及執行與 SQL Azure 的同步處理