SqlCeConnection.FlushFailure 事件
当背景刷新失败时发生。
命名空间： System.Data.SqlServerCe
程序集： System.Data.SqlServerCe（在 System.Data.SqlServerCe.dll 中）
语法
声明
Public Event FlushFailure As SqlCeFlushFailureEventHandler
用法
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 支持使用事件，但不支持声明新事件。
示例
下面的示例演示了如何使用 FlushFailure 事件。
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);
}
}