TransactionCompletedEventHandler 代理人
定義
重要
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表示處理 TransactionCompleted 類別之 Transaction 事件的方法。
public delegate void TransactionCompletedEventHandler(System::Object ^ sender, TransactionEventArgs ^ e);
public delegate void TransactionCompletedEventHandler(object? sender, TransactionEventArgs e);
public delegate void TransactionCompletedEventHandler(object sender, TransactionEventArgs e);
type TransactionCompletedEventHandler = delegate of obj * TransactionEventArgs -> unit
Public Delegate Sub TransactionCompletedEventHandler(sender As Object, e As TransactionEventArgs)
參數
- sender
- Object
事件的來源。
包含事件資料的 TransactionEventArgs。
範例
下列範例示範應用程式如何藉 TransactionCompleted 由訂閱 事件來取得交易的結果。
static void Main(string[] args)
{
try
{
//Create the transaction scope
using (TransactionScope scope = new TransactionScope())
{
//Register for the transaction completed event for the current transaction
Transaction.Current.TransactionCompleted += new TransactionCompletedEventHandler(Current_TransactionCompleted);
//Call complete on the TransactionScope based on console input
ConsoleKeyInfo c;
while (true)
{
Console.Write("Complete the transaction scope? [Y|N] ");
c = Console.ReadKey();
Console.WriteLine();
if ((c.KeyChar == 'Y') || (c.KeyChar == 'y'))
{
scope.Complete();
break;
}
else if ((c.KeyChar == 'N') || (c.KeyChar == 'n'))
{
break;
}
}
}
}
catch (System.Transactions.TransactionException ex)
{
Console.WriteLine(ex);
}
catch
{
Console.WriteLine("Cannot complete transaction");
throw;
}
}
//Transaction completed event handler
static void Current_TransactionCompleted(object sender, TransactionEventArgs e)
{
Console.WriteLine("A transaction has completed:");
Console.WriteLine("ID: {0}", e.Transaction.TransactionInformation.LocalIdentifier);
Console.WriteLine("Distributed ID: {0}", e.Transaction.TransactionInformation.DistributedIdentifier);
Console.WriteLine("Status: {0}", e.Transaction.TransactionInformation.Status);
Console.WriteLine("IsolationLevel: {0}", e.Transaction.IsolationLevel);
}
Public Shared Sub Main()
Try
Using scope As TransactionScope = New TransactionScope()
'Register for the transaction completed event for the current transaction
AddHandler Transaction.Current.TransactionCompleted, AddressOf Current_TransactionCompleted
'Perform transactional work here.
'Call complete on the TransactionScope based on console input
Dim c As ConsoleKeyInfo
While (True)
Console.Write("Complete the transaction scope? [Y|N] ")
c = Console.ReadKey()
Console.WriteLine()
If (c.KeyChar = "Y") Or (c.KeyChar = "y") Then
scope.Complete()
Exit While
ElseIf ((c.KeyChar = "N") Or (c.KeyChar = "n")) Then
Exit While
End If
End While
End Using
Catch ex As TransactionException
Console.WriteLine(ex)
Catch
Console.WriteLine("Cannot complete transaction")
Throw
End Try
End Sub
'Transaction completed event handler
Private Shared Sub Current_TransactionCompleted(ByVal sender As Object, ByVal e As TransactionEventArgs)
Console.WriteLine("A transaction has completed:")
Console.WriteLine("ID: {0}", e.Transaction.TransactionInformation.LocalIdentifier)
Console.WriteLine("Distributed ID: {0}", e.Transaction.TransactionInformation.DistributedIdentifier)
Console.WriteLine("Status: {0}", e.Transaction.TransactionInformation.Status)
Console.WriteLine("IsolationLevel: {0}", e.Transaction.IsolationLevel)
End Sub
擴充方法
GetMethodInfo(Delegate) |
取得表示特定委派所代表之方法的物件。 |