private void ListCallback(IDbServiceAsyncCallback <List <object> > callback)
{
var data = (CachedListCallback)callback;
var list = data.Cache.Data;
list.RaiseListChangedEvents = false;
list.Clear();
list.Add(string.Empty);
foreach (var i in data.Results)
{
list.Add(i);
}
list.RaiseListChangedEvents = true;
list.ResetBindings();
}
private void SearchComplete(IDbServiceAsyncCallback <DataTable> callback)
{
var data = (ResultCallback)callback;
if (data.Exception != null)
{
MessageBox.Show(data.Exception.Message, "Search", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
else
{
ResultSQL = ((SearchDetails)data.Details).Sql;
Result.DataSource = data.Results;
}
SearchCanceller = null;
}
public Action GetList(IFieldPath path, IDbServiceAsyncCallback <List <object> > callback) //ListCallback callback)
{
var worker = new BackgroundWorker();
worker.WorkerSupportsCancellation = true;
worker.DoWork += (s1, e1) =>
{
e1.Result = GetList(path);
e1.Cancel = worker.CancellationPending;
};
worker.RunWorkerCompleted += (s2, e2) =>
{
worker.Dispose();
// cancellation assumes the SearchWorker property has been set null
if (e2.Cancelled)
{
return;
}
if (e2.Error != null)
{
//MessageBox.Show("There was an error when trying to perform the search.\n\n" + e2.Error.Message, "Search", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
callback.Exception = e2.Error;
}
else
{
callback.Results = e2.Result as List <object>;
//callback(path, e2.Result as List<object>);
}
callback.Callback(callback);
};
worker.RunWorkerAsync();
return(new Action(worker.CancelAsync));
}
