/// <summary>
/// 同步模式:处理
/// </summary>
/// <param name="msg"></param>
/// <returns></returns>
public override object DoExecuteMessageRequest(string serviceName, WQMessage msg, bool async)
{
//1. 保存DB,返回msg.TranscactionID
//2. 异步调用同步方法
//3. 开启守护线程修补失败的
Log.Write(LogAction.Info, className, "DoExecuteMessageRequest", serviceName, -1, string.Format(startFormat, serviceName, msg.TransactionID));
Routing routing = Routing(serviceName, msg);
if (null == routing || routing.EmptyHandlerName.Length > 0)
{
return EmptyRouting(serviceName, msg, async);
}
int rtn = -1;
msg.ServiceName = serviceName;
long pidx = routing.ParentGroupIndex;
long idx = routing.GroupIndex;
rtn = MessageDao.Save(serviceName, msg, (int)DealStatus.Dealing, pidx, idx);
Log.Write(LogAction.Info, className, "DoExecuteMessageRequest", serviceName, -1, msg.TransactionID + ",保存消息返回值:" + rtn);
if (rtn > 0)
{
AsyncDelegate ad = new AsyncDelegate(AsyncExecute);
ad.BeginInvoke(serviceName, pidx, idx, msg, null, null);
}
return (rtn > 0);
}
public void transferDidStart(Transfer t)
{
AsyncDelegate d = delegate
{
View.TransferStatus = TransferStatus.InProgress;
View.ProgressIndeterminate = true;
Progress(String.Empty);
View.StatusText = String.Empty;
};
invoke(new SimpleDefaultMainAction(this, d));
}
/// <summary>
/// 异步调用完成时执行回调方法
/// 不会阻塞调用线程
/// </summary>
private void Test3()
{
//输出主线程ID
Console.WriteLine("主线程ID：{0}", Thread.CurrentThread.ManagedThreadId);
//创建委托
AsyncDelegate asyncDel = new AsyncDelegate(TestMethod);
int nThreadID = 0;
//异步执行TestMethod方法,使用回调函数并传入state参数
IAsyncResult result = asyncDel.BeginInvoke(3000, out nThreadID,
new AsyncCallback(AsyncCallCompleted), "测试参数传递");
}
/// <summary>
/// Notifies PM with a message.
/// </summary>
/// <param name="msg">Message sent to PM.</param>
public void NotifyPM(string msg)
{
if (repInfo.LoggingLvl.Equals("full"))
{
PMServices service = getPMServices();
AsyncDelegate RemoteDel = new AsyncDelegate(service.SendToLog);
// Call delegate to remote method
IAsyncResult RemAr = RemoteDel.BeginInvoke(msg, null, null);
}
}
/// <summary>
/// Finishes asynchronous execution of a SQL statement, returning the requested
/// <see cref="MySqlDataReader"/>.
/// </summary>
/// <param name="result">The <see cref="IAsyncResult"/> returned by the call to
/// <see cref="BeginExecuteReader()"/>.</param>
/// <returns>A <b>MySqlDataReader</b> object that can be used to retrieve the requested rows. </returns>
public MySqlDataReader EndExecuteReader(IAsyncResult result)
{
result.AsyncWaitHandle.WaitOne();
AsyncDelegate c = caller;
caller = null;
if (thrownException != null)
{
throw thrownException;
}
return((MySqlDataReader)c.EndInvoke(result));
}
/// <summary>
/// Initiates the asynchronous execution of the SQL statement or stored procedure
/// that is described by this <see cref="MySqlCommand"/>.
/// </summary>
/// <param name="callback">
/// An <see cref="AsyncCallback"/> delegate that is invoked when the command's
/// execution has completed. Pass a null reference (<b>Nothing</b> in Visual Basic)
/// to indicate that no callback is required.</param>
/// <param name="stateObject">A user-defined state object that is passed to the
/// callback procedure. Retrieve this object from within the callback procedure
/// using the <see cref="IAsyncResult.AsyncState"/> property.</param>
/// <returns>An <see cref="IAsyncResult"/> that can be used to poll or wait for results,
/// or both; this value is also needed when invoking <see cref="EndExecuteNonQuery"/>,
/// which returns the number of affected rows. </returns>
public IAsyncResult BeginExecuteNonQuery(AsyncCallback callback, object stateObject)
{
if (caller != null)
{
Throw(new MySqlException(Resources.UnableToStartSecondAsyncOp));
}
caller = new AsyncDelegate(AsyncExecuteWrapper);
asyncResult = caller.BeginInvoke(2, CommandBehavior.Default,
callback, stateObject);
return(asyncResult);
}
/// <summary>
/// Finishes asynchronous execution of a SQL statement.
/// </summary>
/// <param name="asyncResult">The <see cref="IAsyncResult"/> returned by the call
/// to <see cref="BeginExecuteNonQuery()"/>.</param>
/// <returns></returns>
public int EndExecuteNonQuery(IAsyncResult asyncResult)
{
asyncResult.AsyncWaitHandle.WaitOne();
AsyncDelegate c = caller;
caller = null;
if (thrownException != null)
{
throw thrownException;
}
return((int)c.EndInvoke(asyncResult));
}
public override void transferWillStart()
{
AsyncDelegate d = delegate
{
_view.TransferStatus = TransferStatus.InProgress;
_view.ProgressIndeterminate = true;
_controller.SetProgressText();
_controller.SetStatusText();
};
_controller.invoke(new SimpleDefaultMainAction(_controller, d));
}
private static void MSMQCallbackMethod(IAsyncResult ar)
{
AsyncDelegate dlgt = (AsyncDelegate)ar.AsyncState;
bool returnValue = dlgt.EndInvoke(ar);
//傳送失敗
if (!returnValue)
{
//do some thing here
}
}
static void Main(string[] args)
{
IObservable <string> o = LongRunningOperationAsync("Task1");
using (var sub = OutputToConsole(o))
{
Sleep(TimeSpan.FromSeconds(2));
};
WriteLine(" ---------------- ");
Task <string> t = LongRunningOperationTaskAsync("Task2");
using (var sub = OutputToConsole(t.ToObservable()))
{
Sleep(TimeSpan.FromSeconds(2));
};
WriteLine(" ---------------- ");
AsyncDelegate asyncMethod = LongRunningOperation;
// marked as obsolete, use tasks instead
Func <string, IObservable <string> > observableFactory =
Observable.FromAsyncPattern <string, string>(
asyncMethod.BeginInvoke, asyncMethod.EndInvoke);
o = observableFactory("Task3");
using (var sub = OutputToConsole(o))
{
Sleep(TimeSpan.FromSeconds(2));
};
WriteLine(" ---------------- ");
o = observableFactory("Task4");
AwaitOnObservable(o).Wait();
WriteLine(" ---------------- ");
using (var timer = new Timer(1000))
{
var ot = Observable.
FromEventPattern <ElapsedEventHandler, ElapsedEventArgs>(
h => timer.Elapsed += h,
h => timer.Elapsed -= h);
timer.Start();
using (var sub = OutputToConsole(ot))
{
Sleep(TimeSpan.FromSeconds(5));
}
WriteLine(" ---------------- ");
timer.Stop();
}
}
public void Crash(string opx, string rep)
{
RepServices repServ = getReplicaServiceFromProcessname(opx, rep);
//Asynchronous call without callback
// Create delegate to remote method
AsyncDelegate RemoteDel = new AsyncDelegate(repServ.Crash);
// Call delegate to remote method
IAsyncResult RemAr = RemoteDel.BeginInvoke(null, null);
SendToLog("Crash " + opx + " " + rep);
}
private void btn_async_Click(object sender, EventArgs e)
{
ad = new AsyncDelegate(t.GetTime);
AsyncCallback acb = new AsyncCallback(CB);
if (chk_sec.Checked)
{
ad.BeginInvoke(true, acb, null);
}
else
{
ad.BeginInvoke(false, acb, null);
}
}
public void CloseSock()
{
try
{
Lisen_sock.Close();
dlgt = null;
dlgtShow = null;
}
catch (Exception)
{
;
}
}
private static Task ExecuteDelegateAsync(AsyncDelegate asyncDelegate)
{
try
{
return(asyncDelegate());
}
catch (Exception ex)
{
var tcs = new TaskCompletionSource <int>();
tcs.SetException(ex);
return(tcs.Task);
}
}
/// <summary>
/// Executes the given AsyncDelegate in the SynchronizationContext associated with this
/// instance of async class
/// </summary>
/// <param name="ad">AsyncDelegate object</param>
public void ExecuteInSychronizationContext(AsyncDelegate ad)
{
if (_synchronizationContext != null)
{
_synchronizationContext.Send(
Delegate.CreateDelegate(typeof(SendOrPostCallback), ad.Method) as SendOrPostCallback,
null);
}
else
{
throw new InvalidOperationException(
"SynchronizationContext object is not available to execute the supplied code");
}
}
public void Deserialization()
{
// Organize file access
while (true)
{
if (state)
{
state = false;
AsyncDelegate action = AsyncDeserialization;
IAsyncResult asyncResult = action.BeginInvoke(null, null);
break;
}
}
}
private void View_StopEvent()
{
foreach (IProgressView progressView in View.SelectedTransfers)
{
Transfer transfer = GetTransferFromView(progressView);
AsyncDelegate run = transfer.cancel;
AsyncDelegate cleanup = delegate {; };
if (transfer.isRunning())
{
Background(run, cleanup);
}
}
}
/// <summary>
/// 將可續列化的物件使用Message Queue傳送
/// </summary>
/// <param name="o">被傳送的物件</param>
/// <param name="existingMachineName">MachineName</param>
/// <param name="existingQueueName">QueueName</param>
//public static void SendMesageQueue(object o, string existingMachineName, string existingQueueName)
public void SendMesageQueue(object o, string existingMachineName, string existingQueueName)
{
if (!MessageQueue.Exists(existingMachineName + "\\" + existingQueueName))
{
MessageQueue.Create(existingMachineName + "\\" + existingQueueName);
MSMQueue = new MessageQueue(existingMachineName + "\\" + existingQueueName);
MSMQueue.SetPermissions("Everyone", MessageQueueAccessRights.FullControl);
}
else
{
MSMQueue = new MessageQueue(existingMachineName + "\\" + existingQueueName);
}
MSMQueue.Formatter = new XmlMessageFormatter(new Type[] { o.GetType() });
AsyncDelegate dlgt = new AsyncDelegate(Send);
IAsyncResult ar = dlgt.BeginInvoke(o, new AsyncCallback(MSMQCallbackMethod), dlgt);
}
/// <summary>
/// 使用 EndInvoke阻塞调用线程，直到异步调用结束
/// </summary>
private void Test()
{
//输出主线程ID
Console.WriteLine("主线程ID：{0}", Thread.CurrentThread.ManagedThreadId);
//创建委托
AsyncDelegate asyncDel = new AsyncDelegate(TestMethod);
int nThreadID = 0;
//异步执行TestMethod方法
IAsyncResult result = asyncDel.BeginInvoke(3000, out nThreadID, null, null);
//阻塞调用线程
asyncDel.EndInvoke(out nThreadID, result);
this.BeginInvoke(_delegate, new object[] { nThreadID.ToString() });
}
void msgHandle(IAsyncResult ar)
{
AsyncDelegate dlgt = (AsyncDelegate)ar.AsyncState;
int count = dlgt.EndInvoke(ar);
string str = "";
for (int i = 0; i < count && i < 5; i++)
{
str += CConsLog.mLogInfo[i] + " 时间：" + CConsLog.mLogTime[i].ToShortTimeString() + "\t\t";
}
labelRoll1.Invoke(new EventHandler(delegate
{
labelRoll1.Text = str;
}));
//labelRoll1.Refresh();
}
private static AsyncDelegate getAction()
{
AsyncDelegate action = null;
foreach (SchedulerEntry entry in schedulerEntries)
{
if (entry.IsDue)
{
action = entry.Action;
toBeRemoved.Add(entry);
break;
}
}
return(action);
}
private void CreateShapeFile(BaseControlGroup b, string state, string filePath)
{
string msg = string.Empty;
ESIL.DBUtility.FireBirdHelperBase fb = new ESIL.DBUtility.ESILFireBirdHelper();
ModelDataLine modelDataLine = new ModelDataLine(); try
{
modelDataLine.DatabaseFilePath = filePath;
System.Data.DataTable dtModel = CommonClass.ExcelToDataTable(filePath);
DataSourceCommonClass.UpdateModelDataLineFromDataSet(b.Pollutant, modelDataLine, dtModel);
switch (state)
{
case "baseline":
b.Base = null;
b.Base = modelDataLine;
break;
case "control":
b.Control = null;
b.Control = modelDataLine;
break;
}
if (modelDataLine.ModelAttributes.Count == 0)
{
msg = "Error reading files.";
return;
}
int threadId = -1;
AsyncDelegate asyncD = new AsyncDelegate(AsyncCreateFile);
IAsyncResult ar = asyncD.BeginInvoke(b, modelDataLine, state, out threadId, null, null);
return;
}
catch (Exception ex)
{
Logger.LogError(ex);
return;
}
finally
{
if (msg != string.Empty)
{
MessageBox.Show(msg, "Error", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
}
public void BeginInvoke(AsyncDelegate del)
{
ControllerMainAction mainAction = new SimpleDefaultMainAction(this, del);
try
{
if (!View.IsHandleCreated)
{
return;
}
View.BeginInvoke(new AsyncDelegate(mainAction.run), null);
}
catch (ObjectDisposedException)
{
//happens because there is no synchronization between the lifecycle of a form and callbacks of background threads.
//catch silently
}
}
public static Task <TException> ExpectExceptionAsync <TException>(AsyncDelegate del, string exceptionMessage)
where TException : Exception
{
var task = ExpectExceptionAsync <TException>(del);
// Only check exception message on English build and OS, since some exception messages come from the OS
// and will be in the native language.
if (UnitTestHelper.EnglishBuildAndOS)
{
task = task.ContinueWith(res =>
{
var ex = res.GetAwaiter().GetResult();
Assert.AreEqual(exceptionMessage, ex.Message, "Incorrect exception message.");
return(ex);
});
}
return(task);
}
public void BeginInvoke(AsyncDelegate del)
{
ControllerMainAction mainAction = new SimpleDefaultMainAction(this, del);
try
{
if (!View.IsHandleCreated)
{
return;
}
View.BeginInvoke(new AsyncDelegate(mainAction.run), null);
}
catch (ObjectDisposedException)
{
//happens because there is no synchronization between the lifecycle of a form and callbacks of background threads.
//catch silently
}
}
public override void transferDidEnd()
{
AsyncDelegate d = delegate
{
_view.TransferStatus = TransferStatus.Complete;
_controller._messageText = null;
_controller.SetMessageText();
_controller.SetProgressText();
_controller.SetStatusText();
_view.TransferStatus = _controller._transfer.isComplete()
? TransferStatus.Complete
: TransferStatus.Incomplete;
//todo
//filesPopup.itemAtIndex(new NSInteger(0)).setEnabled(transfer.getRoot().getLocal().exists());
_controller.UpdateOverallProgress();
};
_controller.invoke(new SimpleDefaultMainAction(_controller, d));
}
public void Status()
{
foreach (string operator_id in repServices.Keys)
{
ArrayList array;
repServices.TryGetValue(operator_id, out array);
for (int i = 0; i < array.Count; i++)
{
RepServices repS = (RepServices)array[i];
//Asynchronous call without callback
// Create delegate to remote method
AsyncDelegate RemoteDel = new AsyncDelegate(repS.Status);
// Call delegate to remote method
IAsyncResult RemAr = RemoteDel.BeginInvoke(null, null);
}
}
SendToLog("Status");
}
static void Main(string[] args)
{
Console.WriteLine($"Potok nomer {Thread.CurrentThread.ManagedThreadId} na4al paboty");
var asyncDelegate = new AsyncDelegate(Calculate);
// var result = asyncDelegate.Invoke(10, 15);
//async nomer 1
//var asyncResult = asyncDelegate.BeginInvoke(10, 15, null, null);
//while (!asyncResult.IsCompleted)
//{
// Console.WriteLine("Жди");
// Thread.Sleep(800);
//}
//var result = asyncDelegate.EndInvoke(asyncResult);
//Console.WriteLine("Rezylt = " + result);
//async nomer 2
asyncDelegate.BeginInvoke(10, 15, new AsyncCallback(CalculateCallback), null /*<--Тип Object*/);
Console.ReadLine();
}
public void DoOldApm()
{
try
{
AsyncDelegate asyncDelegate = AsyncWaitThenReturn;
IAsyncResult asyncResult = asyncDelegate.BeginInvoke(123, new TimeSpan(0, 0, 1), ar =>
{
var result = asyncDelegate.EndInvoke(ar);
Console.WriteLine("result=" + result);
}, null);
SpinWait.SpinUntil(() => asyncResult.IsCompleted);
Console.WriteLine("Async Delegate Finished.");
}
catch (PlatformNotSupportedException ex)
{
Console.WriteLine("PlatformNotSupportedException=" + ex);
}
}
private static void Execute(AsyncDelegate ad, ITask task, ThreadPool tp)
{
if (defaultThreadPool != null)
{
if (tp == null)
{
defaultThreadPool.Dispatch(task);
}
else
{
tp.Dispatch(task);
}
}
else
{
throw new ApplicationException("Thread Pool used by AsynchronousCodeBlock class is closed. " +
"Cannot execute any more asynchronous code blocks on default Thread pool. Please open the " +
"Thread Pool used by AsynchronousCodeBlock class or supply your own Thread Pool object for " +
"asynchronous code block");
}
}
public void prompt(Credentials credentials, string title, string reason, LoginOptions options)
{
AsyncDelegate d = delegate
{
View = ObjectFactory.GetInstance <IPasswordPromptView>();
View.Title = title;
View.Reason = reason;
View.OkButtonText = LocaleFactory.localizedString("Unlock Vault", "Cryptomator");
View.IconView = IconCache.Instance.IconForName(options.icon(), 64);
View.SavePassword = false;
View.ValidateInput += ValidateInputEventHandler;
if (DialogResult.Cancel == View.ShowDialog(_browser.View))
{
throw new LoginCanceledException();
}
credentials.setPassword(View.InputText);
credentials.setSaved(View.SavePassword);
};
_browser.Invoke(d);
}
public override void SubscribeBidAskBook(ASecurity s, int level)
{
//异步执行前，保存记录
long reqId = _requestId++;
this.htSubscribe.Add(reqId, true);
//异步调用
AsyncDelegate dlg;
switch (s.category)
{
case SecurityCategory.STOCK:
case SecurityCategory.ETF:
this.htSubscribedStocks.Add(s.code, s.bidaskbook);
this.addSubscribedStocks(s.code);
if (!isLoopingDbfFile)
{
isLoopingDbfFile = true;
dlg = new AsyncDelegate(updateStockBidAskBook);
dlg.BeginInvoke(reqId, null, null);
}
break;
case SecurityCategory.OPTION:
this.htSubscribedOptions.Add(s.code, s.bidaskbook);
if (!isLoopingMktFile)
{
isLoopingMktFile = true;
dlg = new AsyncDelegate(updateOptionBidAskBook);
dlg.BeginInvoke(reqId, null, null);
}
break;
default:
string msg = string.Format("无法读取该类证券行情：{0}", s.category);
MessageManager.GetInstance().Add(MessageType.Error, msg);
throw new Exception(msg);
}
}
private void Freeze()
{
AsyncDelegate freezeDelegate = new AsyncDelegate(FreezeAsync);
BeginInvoke(freezeDelegate);
}
/// <summary>
/// Initiates the asynchronous execution of the SQL statement or stored procedure
/// that is described by this <see cref="MySqlCommand"/> using one of the
/// <b>CommandBehavior</b> values.
/// </summary>
/// <param name="behavior">One of the <see cref="CommandBehavior"/> values, indicating
/// options for statement execution and data retrieval.</param>
/// <returns>An <see cref="IAsyncResult"/> that can be used to poll, wait for results,
/// or both; this value is also needed when invoking EndExecuteReader,
/// which returns a <see cref="MySqlDataReader"/> instance that can be used to retrieve
/// the returned rows. </returns>
public IAsyncResult BeginExecuteReader(CommandBehavior behavior)
{
if (caller != null)
Throw(new MySqlException(Resources.UnableToStartSecondAsyncOp));
caller = new AsyncDelegate(AsyncExecuteWrapper);
asyncResult = caller.BeginInvoke(1, behavior, null, null);
return asyncResult;
}
protected void BeginInvoke(AsyncDelegate del)
{
del.BeginInvoke(EndInvoke, del);
}
private void Read()
{
AsyncDelegate read = new AsyncDelegate(ReadAsync);
BeginInvoke(read);
}
private void Begin()
{
AsyncDelegate begin = new AsyncDelegate(BeginAsync);
BeginInvoke(begin);
}
private void Recover()
{
AsyncDelegate recover = new AsyncDelegate(RecoverAsync);
BeginInvoke(recover);
}
private void Fail()
{
AsyncDelegate fail = new AsyncDelegate(FailAsync);
BeginInvoke(fail);
}
private void Connect()
{
AsyncDelegate connect = new AsyncDelegate(ConnectAsync);
BeginInvoke(connect);
}
/// <summary>
/// Initiates the asynchronous execution of the SQL statement or stored procedure
/// that is described by this <see cref="MySqlCommand"/>.
/// </summary>
/// <param name="callback">
/// An <see cref="AsyncCallback"/> delegate that is invoked when the command's
/// execution has completed. Pass a null reference (<b>Nothing</b> in Visual Basic)
/// to indicate that no callback is required.</param>
/// <param name="stateObject">A user-defined state object that is passed to the
/// callback procedure. Retrieve this object from within the callback procedure
/// using the <see cref="IAsyncResult.AsyncState"/> property.</param>
/// <returns>An <see cref="IAsyncResult"/> that can be used to poll or wait for results,
/// or both; this value is also needed when invoking <see cref="EndExecuteNonQuery"/>,
/// which returns the number of affected rows. </returns>
public IAsyncResult BeginExecuteNonQuery(AsyncCallback callback, object stateObject)
{
if (caller != null)
throw new MySqlException("ResourceStrings.UnableToStartSecondAsyncOp");
caller = new AsyncDelegate(AsyncExecuteWrapper);
asyncResult = caller.BeginInvoke(2, CommandBehavior.Default,
callback, stateObject);
return asyncResult;
}
public static void Write(LogEvent log)
{
try
{
AsyncDelegate ad = new AsyncDelegate(write);
ad.BeginInvoke(log, new AsyncCallback(CallbackMethod), ad);
}
catch { }
}
public static void OpenAttachmentAsync(Control Ctrl, int AttachmentID, int ConnectionID)
{
Ctrl.UseWaitCursor = true;
// Create the delegate.
AsyncDelegate dlgt = new AsyncDelegate(Utils.OpenAttachment);
// Initiate the asychronous call. Include an AsyncCallback
// delegate representing the callback method, and the data
// needed to call EndInvoke.
IAsyncResult ar = dlgt.BeginInvoke(Ctrl, AttachmentID, ConnectionID, new AsyncCallback(CallbackMethod), dlgt);
}
public void Invoke(AsyncDelegate del)
{
Invoke(del, false);
}
public void Invoke(AsyncDelegate del, bool wait)
{
ControllerMainAction mainAction = new SimpleDefaultMainAction(this, del);
invoke(mainAction, wait);
}
/// <summary>
/// Initiates the asynchronous execution of the SQL statement or stored procedure
/// that is described by this <see cref="MySqlCommand"/>.
/// </summary>
/// <param name="callback">
/// An <see cref="AsyncCallback"/> delegate that is invoked when the command's
/// execution has completed. Pass a null reference (<b>Nothing</b> in Visual Basic)
/// to indicate that no callback is required.</param>
/// <param name="stateObject">A user-defined state object that is passed to the
/// callback procedure. Retrieve this object from within the callback procedure
/// using the <see cref="IAsyncResult.AsyncState"/> property.</param>
/// <returns>An <see cref="IAsyncResult"/> that can be used to poll or wait for results,
/// or both; this value is also needed when invoking <see cref="EndExecuteNonQuery"/>,
/// which returns the number of affected rows. </returns>
public IAsyncResult BeginExecuteNonQuery(AsyncCallback callback, object stateObject)
{
AsyncDelegate del = new AsyncDelegate(AsyncExecuteWrapper);
asyncResult = del.BeginInvoke(2, CommandBehavior.Default,
callback, stateObject);
return asyncResult;
}
public void Background(AsyncDelegate del, AsyncDelegate cleanup)
{
// Move to background thread
background(new AsyncDelegateBackgroundAction(del, cleanup));
}
/// <summary>
/// Initiates the asynchronous execution of the SQL statement or stored procedure
/// that is described by this <see cref="MySqlCommand"/> using one of the
/// <b>CommandBehavior</b> values.
/// </summary>
/// <param name="behavior">One of the <see cref="CommandBehavior"/> values, indicating
/// options for statement execution and data retrieval.</param>
/// <returns>An <see cref="IAsyncResult"/> that can be used to poll, wait for results,
/// or both; this value is also needed when invoking EndExecuteReader,
/// which returns a <see cref="MySqlDataReader"/> instance that can be used to retrieve
/// the returned rows. </returns>
public IAsyncResult BeginExecuteReader(CommandBehavior behavior)
{
AsyncDelegate del = new AsyncDelegate(AsyncExecuteWrapper);
asyncResult = del.BeginInvoke(1, behavior, null, null);
return asyncResult;
}
/// <summary>
/// Initiates the asynchronous execution of the SQL statement or stored procedure
/// that is described by this <see cref="MySqlCommand"/>.
/// </summary>
/// <returns>An <see cref="IAsyncResult"/> that can be used to poll or wait for results,
/// or both; this value is also needed when invoking <see cref="EndExecuteNonQuery"/>,
/// which returns the number of affected rows. </returns>
public IAsyncResult BeginExecuteNonQuery()
{
if (caller != null)
Throw(new MySqlException(Resources.UnableToStartSecondAsyncOp));
caller = new AsyncDelegate(AsyncExecuteWrapper);
asyncResult = caller.BeginInvoke(2, CommandBehavior.Default, null, null);
return asyncResult;
}
private void Create()
{
AsyncDelegate create = new AsyncDelegate(CreateAsync);
BeginInvoke(create);
}
private void Write()
{
AsyncDelegate write = new AsyncDelegate(WriteAsync);
BeginInvoke(write);
}
private void Commit()
{
AsyncDelegate commit = new AsyncDelegate(CommitAsync);
BeginInvoke(commit);
}
/// <summary>
/// Initiates the asynchronous execution of the SQL statement or stored procedure
/// that is described by this <see cref="MySqlCommand"/>.
/// </summary>
/// <returns>An <see cref="IAsyncResult"/> that can be used to poll or wait for results,
/// or both; this value is also needed when invoking <see cref="EndExecuteNonQuery"/>,
/// which returns the number of affected rows. </returns>
public IAsyncResult BeginExecuteNonQuery()
{
AsyncDelegate del = new AsyncDelegate(AsyncExecuteWrapper);
asyncResult = del.BeginInvoke(2, CommandBehavior.Default, null, null);
return asyncResult;
}
protected void BeginInvoke(AsyncDelegate del)
{
// thread the delegate, as a fire and forget.
del.BeginInvoke(EndAsync, del);
}
private void Access()
{
AsyncDelegate access = new AsyncDelegate(AccessAsync);
BeginInvoke(access);
}
/// <summary>
/// Finishes asynchronous execution of a SQL statement, returning the requested
/// <see cref="MySqlDataReader"/>.
/// </summary>
/// <param name="result">The <see cref="IAsyncResult"/> returned by the call to
/// <see cref="BeginExecuteReader()"/>.</param>
/// <returns>A <b>MySqlDataReader</b> object that can be used to retrieve the requested rows. </returns>
public MySqlDataReader EndExecuteReader(IAsyncResult result)
{
result.AsyncWaitHandle.WaitOne();
AsyncDelegate c = caller;
caller = null;
if (thrownException != null)
throw thrownException;
return (MySqlDataReader)c.EndInvoke(result);
}
private void Abort()
{
AsyncDelegate abort = new AsyncDelegate(AbortAsync);
BeginInvoke(abort);
}
/// <summary>
/// Finishes asynchronous execution of a SQL statement.
/// </summary>
/// <param name="asyncResult">The <see cref="IAsyncResult"/> returned by the call
/// to <see cref="BeginExecuteNonQuery()"/>.</param>
/// <returns></returns>
public int EndExecuteNonQuery(IAsyncResult asyncResult)
{
asyncResult.AsyncWaitHandle.WaitOne();
AsyncDelegate c = caller;
caller = null;
if (thrownException != null)
throw thrownException;
return (int)c.EndInvoke(asyncResult);
}
static void Main(){
AsyncDelegate asyncDlg = new AsyncDelegate();
asyncDlg.Run();
}
