/// <summary>Starts execution of a background operation.</summary>
/// <param name="argument">A parameter for use by the background operation to be executed in the <see cref="E:System.ComponentModel.BackgroundWorker.DoWork" /> event handler. </param>
/// <exception cref="T:System.InvalidOperationException">
/// <see cref="P:System.ComponentModel.BackgroundWorker.IsBusy" /> is true. </exception>
public void RunWorkerAsync(object argument)
{
if (this.IsBusy)
{
throw new InvalidOperationException("The background worker is busy.");
}
this.async = AsyncOperationManager.CreateOperation(this);
BackgroundWorker.ProcessWorkerEventHandler processWorkerEventHandler = new BackgroundWorker.ProcessWorkerEventHandler(this.ProcessWorker);
processWorkerEventHandler.BeginInvoke(argument, this.async, new SendOrPostCallback(this.CompleteWorker), null, null);
}
public void RunWorkerAsync(object argument)
{
if (this.isRunning)
{
throw new InvalidOperationException(SR.GetString("BackgroundWorker_WorkerAlreadyRunning"));
}
this.isRunning = true;
this.cancellationPending = false;
this.asyncOperation = AsyncOperationManager.CreateOperation(null);
this.threadStart.BeginInvoke(argument, null, null);
}
/// <summary>Starts execution of a background operation.</summary>
/// <param name="argument">A parameter for use by the background operation to be executed in the <see cref="E:System.ComponentModel.BackgroundWorker.DoWork" /> event handler. </param>
/// <exception cref="T:System.InvalidOperationException">
/// <see cref="P:System.ComponentModel.BackgroundWorker.IsBusy" /> is true. </exception>
public void RunWorkerAsync(object argument)
{
if (IsBusy)
{
throw new InvalidOperationException("The background worker is busy.");
}
async = AsyncOperationManager.CreateOperation(this);
ProcessWorkerEventHandler processWorkerEventHandler = ProcessWorker;
processWorkerEventHandler.BeginInvoke(argument, async, CompleteWorker, null, null);
}
public void RunWorkerAsync(object argument)
{
if (_isRunning)
{
throw new InvalidOperationException(SR.BackgroundWorker_WorkerAlreadyRunning);
}
_isRunning = true;
_cancellationPending = false;
_asyncOperation = AsyncOperationManager.CreateOperation(null);
Task.Factory.StartNew(
(arg) => WorkerThreadStart(arg),
argument,
CancellationToken.None,
TaskCreationOptions.DenyChildAttach,
TaskScheduler.Default
);
}
/// <summary>
/// Creates a new async operation.
/// </summary>
/// <returns>
/// An <see cref="AsyncOperation"/>.
/// </returns>
protected virtual AsyncOperation CreateAsyncOperation()
{
return(AsyncOperationManager.CreateOperation(null));
}
