Событие SqlCeConnection.FlushFailure
Возникает в том случае, когда фоновая запись данных завершается ошибкой.
Пространство имен: System.Data.SqlServerCe
Сборка: System.Data.SqlServerCe (в System.Data.SqlServerCe.dll)
Синтаксис
'Декларация
Public Event FlushFailure As SqlCeFlushFailureEventHandler
'Применение
Dim instance As SqlCeConnection
Dim handler As SqlCeFlushFailureEventHandler
AddHandler instance.FlushFailure, handler
public event SqlCeFlushFailureEventHandler FlushFailure
public:
event SqlCeFlushFailureEventHandler^ FlushFailure {
void add (SqlCeFlushFailureEventHandler^ value);
void remove (SqlCeFlushFailureEventHandler^ value);
}
member FlushFailure : IEvent<SqlCeFlushFailureEventHandler,
SqlCeFlushFailureEventArgs>
JScript поддерживает использование событий, но не объявление новых.
Примеры
Следующий пример демонстрирует обработку события FlushFailure.
Public Sub Snippet4()
Dim conn As SqlCeConnection = Nothing
Try
conn = New SqlCeConnection("Data Source = MyDatabase.sdf; Password ='<pwd>'")
AddHandler conn.FlushFailure, AddressOf conn_FlushFailure
conn.Open()
'Flush failure occurs here
'OnFlushFailure will be called from the background thread.
Finally
conn.Close()
End Try
End Sub
Private Sub conn_FlushFailure(ByVal sender As System.Object, ByVal e As SqlCeFlushFailureEventArgs)
Dim errors As SqlCeErrorCollection = e.Errors
Console.WriteLine("Flush Failure: " + errors(0).Message)
End Sub
// using System;
// using System.Xml;
// using System.Data;
// using System.Data.SqlServerCe;
// using System.Data.Common;
// using System.Windows.Forms;
/// <summary>
/// Demonstrates the usage of the FlushFailure event
/// </summary>
public class MyForm : Form
{
public void Snippet4()
{
SqlCeConnection conn = new SqlCeConnection();
conn.FlushFailure+=new SqlCeFlushFailureEventHandler(conn_FlushFailure);
conn.Open();
//Flush failure occurs here
//OnFlushFailure will be called from the background thread.
conn.Close();
}
void conn_FlushFailure(object sender, SqlCeFlushFailureEventArgs e)
{
SqlCeErrorCollection errors = e.Errors;
Console.WriteLine("Flush Failure:" + errors[0].Message);
}
}