private void onUploadFileCompleted(object sender, UploadCompletedEventArgs e)
{
if (UploadFileCompleted != null)
{
UploadFileCompleted(sender, e);
}
}
private void UploadCompleted(object sender, UploadCompletedEventArgs e)
{
Dispatcher.BeginInvoke(() =>
{
displayMessage("Upload completed. Processing..");
}
);
}
private void processFieldWorker(string filePath, IProcessingSettings settings,
AsyncOperation asyncOp)
{
Exception e = null;
Task task = new Task();
try
{
if (settings is TextFieldProcessingSettings)
{
task.Id = _syncClient.ProcessTextField(filePath, settings as TextFieldProcessingSettings);
}
else if (settings is BarcodeFieldProcessingSettings)
{
task.Id = _syncClient.ProcessBarcodeField(filePath, settings as BarcodeFieldProcessingSettings);
}
else if (settings is CheckmarkFieldProcessingSettings)
{
task.Id = _syncClient.ProcessCheckmarkField(filePath, settings as CheckmarkFieldProcessingSettings);
}
else
{
throw new ArgumentException("Invalid type of processing settings");
}
// Notify that upload was completed
Task uploadedTask = new Task(task.Id, TaskStatus.Submitted);
UploadCompletedEventArgs uploadCompletedEventArgs = new UploadCompletedEventArgs(uploadedTask, asyncOp.UserSuppliedState);
asyncOp.Post(onUploadCompletedDelegate, uploadCompletedEventArgs);
// Wait until task finishes
startTaskMonitorIfNecessary();
_taskList.AddTask(task);
task = waitUntilTaskFinishes(task);
}
catch (Exception ex)
{
e = ex;
}
lock (processJobs.SyncRoot)
{
processJobs.Remove(asyncOp.UserSuppliedState);
}
bool canceled = false;
// Package the results of the operation in EventArgs
TaskEventArgs ev = new TaskEventArgs(task, e, canceled, asyncOp.UserSuppliedState);
// End the task. The asyncOp object is responsible
// for marshaling the call.
asyncOp.PostOperationCompleted(onProcessingCompleteDelegate, ev);
}
// This method performs the actual prime number computation.
// It is executed on the worker thread.
private void processFileWorker(string filePath, IProcessingSettings settings,
AsyncOperation asyncOp)
{
Exception e = null;
// Check that the task is still active.
// The operation may have been canceled before
// the thread was scheduled.
Task task = null;
try
{
if (settings is ProcessingSettings)
{
task = _syncClient.ProcessImage(filePath, settings as ProcessingSettings);
}
else if (settings is BusCardProcessingSettings)
{
task = _syncClient.ProcessBusinessCard(filePath, settings as BusCardProcessingSettings);
}
else if (settings is CaptureDataSettings)
{
string templateName = (settings as CaptureDataSettings).TemplateName;
task = _syncClient.CaptureData(filePath, templateName);
}
// Notify subscriber that upload completed
Task uploadedTask = new Task(task.Id, TaskStatus.Submitted);
UploadCompletedEventArgs uploadCompletedEventArgs = new UploadCompletedEventArgs(uploadedTask, asyncOp.UserSuppliedState);
asyncOp.Post(onUploadCompletedDelegate, uploadCompletedEventArgs);
startTaskMonitorIfNecessary();
_taskList.AddTask(task);
task = waitUntilTaskFinishes(task); // task is modified on server
}
catch (Exception ex)
{
e = ex;
}
processCompletionMethod(task, e, false, asyncOp);
}
/// <summary>
/// Submit and process image asynchronously.
/// Performs callbacks:
/// UploadFileCompleted
/// TaskProcessingCompleted
/// </summary>
/// <param name="filePath">Path to file in isolated storage</param>
/// <param name="settings"></param>
/// <param name="userState"></param>
public void ProcessImageAsync(string filePath, ProcessingSettings settings, object userState)
{
BackgroundWorker w = new BackgroundWorker();
w.DoWork += new DoWorkEventHandler((sender, e) =>
{
OcrSdkTask task = null;
try
{
task = _syncClient.ProcessImage(filePath, settings);
UploadCompletedEventArgs uploadArgs = new UploadCompletedEventArgs(task, userState);
onUploadFileCompleted(sender, uploadArgs);
// Wait until task finishes
while (true)
{
task = _syncClient.GetTaskStatus(task.Id);
if (!task.IsTaskActive())
{
break;
}
Thread.Sleep(1000);
}
if (task.Status == TaskStatus.NotEnoughCredits)
{
throw new Exception("Not enough credits to process image. Please add more pages to your application's account.");
}
TaskEventArgs taskArgs = new TaskEventArgs(task, null, false, userState);
onProcessingCompleted(sender, taskArgs);
}
catch (Exception ex)
{
TaskEventArgs taskArgs = new TaskEventArgs(task, ex, false, userState);
onProcessingCompleted(sender, taskArgs);
}
}
);
w.RunWorkerAsync();
}
/// <summary>
/// Submit and process image asynchronously.
/// Performs callbacks:
/// UploadFileCompleted
/// TaskProcessingCompleted
/// </summary>
/// <param name="filePath">Path to file in isolated storage</param>
/// <param name="settings"></param>
/// <param name="userState"></param>
public void ProcessImageAsync(string filePath, ProcessingSettings settings, object userState)
{
BackgroundWorker w = new BackgroundWorker();
w.DoWork += new DoWorkEventHandler((sender, e) =>
{
Task task = null;
try
{
task = _syncClient.ProcessImage(filePath, settings);
UploadCompletedEventArgs uploadArgs = new UploadCompletedEventArgs(task, userState);
onUploadFileCompleted(sender, uploadArgs);
// Wait until task finishes
while (true)
{
task = _syncClient.GetTaskStatus(task.Id);
if (!task.IsTaskActive())
{
break;
}
Thread.Sleep(1000);
}
if (task.Status == TaskStatus.NotEnoughCredits)
{
throw new Exception("Not enough credits to process image. Please add more pages to your application's account.");
}
TaskEventArgs taskArgs = new TaskEventArgs(task, null, false, userState);
onProcessingCompleted(sender, taskArgs);
}
catch (Exception ex)
{
TaskEventArgs taskArgs = new TaskEventArgs(task, ex, false, userState);
onProcessingCompleted(sender, taskArgs);
}
}
);
w.RunWorkerAsync();
}
private void UploadCompleted(object sender, UploadCompletedEventArgs e)
{
UserTask task = e.UserState as UserTask;
task.TaskStatus = "Processing";
task.TaskId = e.Result.Id.ToString();
}
private void onUploadFileCompleted(object sender, UploadCompletedEventArgs e)
{
if (UploadFileCompleted != null)
{
UploadFileCompleted(sender, e);
}
}
private void processFieldWorker(string filePath, IProcessingSettings settings,
AsyncOperation asyncOp)
{
Exception e = null;
Task task = new Task();
try
{
if (settings is TextFieldProcessingSettings)
{
task = _syncClient.ProcessTextField(filePath, settings as TextFieldProcessingSettings);
}
else if (settings is BarcodeFieldProcessingSettings)
{
task = _syncClient.ProcessBarcodeField(filePath, settings as BarcodeFieldProcessingSettings);
}
else if (settings is CheckmarkFieldProcessingSettings)
{
task = _syncClient.ProcessCheckmarkField(filePath, settings as CheckmarkFieldProcessingSettings);
}
else
{
throw new ArgumentException("Invalid type of processing settings");
}
// Notify that upload was completed
Task uploadedTask = new Task(task.Id, TaskStatus.Submitted);
UploadCompletedEventArgs uploadCompletedEventArgs = new UploadCompletedEventArgs(uploadedTask, asyncOp.UserSuppliedState);
asyncOp.Post(onUploadCompletedDelegate, uploadCompletedEventArgs);
// Wait until task finishes
startTaskMonitorIfNecessary();
_taskList.AddTask(task);
task = waitUntilTaskFinishes(task);
}
catch (Exception ex)
{
e = ex;
}
lock (processJobs)
{
processJobs.Remove(asyncOp.UserSuppliedState);
}
bool canceled = false;
// Package the results of the operation in EventArgs
TaskEventArgs ev = new TaskEventArgs(task, e, canceled, asyncOp.UserSuppliedState);
// End the task. The asyncOp object is responsible
// for marshaling the call.
asyncOp.PostOperationCompleted(onProcessingCompleteDelegate, ev);
}
// This method performs the actual file processing.
// It is executed on the worker thread.
private void processFileWorker(string filePath, IProcessingSettings settings,
AsyncOperation asyncOp)
{
Exception e = null;
// Check that the task is still active.
// The operation may have been canceled before
// the thread was scheduled.
Task task = null;
try
{
if (settings is ProcessingSettings)
{
task = _syncClient.ProcessImage(filePath, settings as ProcessingSettings);
}
else if (settings is BusCardProcessingSettings)
{
task = _syncClient.ProcessBusinessCard(filePath, settings as BusCardProcessingSettings);
}
else if (settings is CaptureDataSettings)
{
string templateName = (settings as CaptureDataSettings).TemplateName;
task = _syncClient.CaptureData(filePath, templateName);
}
// Notify subscriber that upload completed
Task uploadedTask = new Task(task.Id, TaskStatus.Submitted);
UploadCompletedEventArgs uploadCompletedEventArgs = new UploadCompletedEventArgs(uploadedTask, asyncOp.UserSuppliedState);
asyncOp.Post(onUploadCompletedDelegate, uploadCompletedEventArgs);
startTaskMonitorIfNecessary();
_taskList.AddTask(task);
task = waitUntilTaskFinishes(task); // task is modified on server
}
catch (Exception ex)
{
e = ex;
}
processCompletionMethod(task, e, false, asyncOp);
}
// This method is invoked via the AsyncOperation object,
// so it is guaranteed to be executed on the correct thread.
private void uploadCompleted(object operationState)
{
UploadCompletedEventArgs e = operationState as UploadCompletedEventArgs;
onUploadFileCompleted(null, e);
}