private void mainBackgroundWorker_DoWork(object sender, DoWorkEventArgs e)
{
DataViewerActionArgs actionArgs = (DataViewerActionArgs)e.Argument;
DataActionEventArgs eventArgs = new DataActionEventArgs(actionArgs.Data);
switch (actionArgs.Action)
{
case DataViewerAction.Load:
OnLoadAsync(eventArgs);
break;
case DataViewerAction.Open:
OnOpenAsync(eventArgs);
break;
case DataViewerAction.New:
OnNewAsync(eventArgs);
break;
case DataViewerAction.Delete:
OnDeleteAsync(eventArgs);
break;
}
DataViewerActionResult result = new DataViewerActionResult(
eventArgs.Data,
actionArgs.StatusGuid,
eventArgs.Cancelled,
eventArgs.UserMessage,
actionArgs.Action);
e.Result = result;
}
private void runActionAsync(DataViewerAction action, object inputData)
{
if (!mainBackgroundWorker.IsBusy)
{
DataActionBeforeEventArgs beforeArgs = new DataActionBeforeEventArgs(inputData);
switch (action)
{
case DataViewerAction.Load:
OnBeforeLoadAsync(beforeArgs);
break;
case DataViewerAction.Open:
OnBeforeOpenAsync(beforeArgs);
break;
case DataViewerAction.New:
OnBeforeNewAsync(beforeArgs);
break;
case DataViewerAction.Delete:
OnBeforeDeleteAsync(beforeArgs);
break;
}
if (!beforeArgs.Cancel)
{
DataViewerActionArgs args = new DataViewerActionArgs(
beforeArgs.Data,
beforeArgs.StatusGuid,
action);
mainBackgroundWorker.RunWorkerAsync(args);
}
else
{
DataViewerActionResult result = new DataViewerActionResult(
beforeArgs.Data,
beforeArgs.StatusGuid,
true,
string.Empty,
action);
handleAfterDataAction(result);
}
}
}
private void mainBackgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
DataViewerActionResult result = (DataViewerActionResult)e.Result;
if (e.Error != null)
{
// Throw on windows forms thread.
Invoke(
(MethodInvoker) delegate()
{
throw new Exception(
"An error occured while running the background worker.", e.Error);
}
);
}
handleAfterDataAction(result);
}
private void handleAfterDataAction(DataViewerActionResult result)
{
DataActionAfterEventArgs eventArgs = new DataActionAfterEventArgs(
result.StatusGuid, result.Cancelled, result.Data);
switch (result.Action)
{
case DataViewerAction.Load:
OnAfterLoadAsync(eventArgs);
break;
case DataViewerAction.Open:
OnAfterOpenAsync(eventArgs);
break;
case DataViewerAction.New:
OnAfterNewAsync(eventArgs);
break;
case DataViewerAction.Delete:
OnAfterDeleteAsync(eventArgs);
break;
}
}
