private void toolStripButtonShowEntryData_Click(object sender, EventArgs e)
{
if (listViewProviderEntries.SelectedItems.Count == 0)
{
return;
}
if (listViewProviderEntries.SelectedItems.Count > 1)
{
MessageBox.Show("Select only one entry to show its data.", "Note", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
DataStoreEntry entry = (DataStoreEntry)listViewProviderEntries.SelectedItems[0].Tag;
if (entry.Period.HasValue == false || entry.DataType != DataStoreEntry.EntryDataTypeEnum.DataBar)
{
return;
}
DataReaderWriter <DataBar> readerWriter = entry.GetDataBarReaderWriter();
if (readerWriter == null)
{
MessageBox.Show("Failed to read entry file.", "Open Forex Platform", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
List <DataBar> barData = readerWriter.Read();
RawDataTradeChartSeries series = new RawDataTradeChartSeries(entry.Symbol.Name);
series.Initialize(barData, entry.Period.Value);
ChartForm form = new ChartForm("Entry [" + entry.Symbol.Name + "," + entry.Period.ToString() + "] Data");
form.Chart.MasterPane.Add(series);
form.Chart.MasterPane.FitDrawingSpaceToScreen(true, true);
form.Show(this.ParentForm);
}
/// <summary>
/// Request bar dataDelivery from entry.
/// </summary>
public bool RequestDataHistoryUpdate(DataSessionInfo sessionInfo, DataHistoryRequest request, bool waitResult)
{
DataStoreEntry entry = DataStore.Instance.GetEntryBySessionInfo(sessionInfo);
if (this.OperationalState != OperationalStateEnum.Operational ||
entry == null)
{
SystemMonitor.OperationError("Data history request received while not operational, or invalid session requrested.");
return(false);
}
if (entry.Period != request.Period)
{
SystemMonitor.OperationError("Data history request received but period not recognized.");
return(false);
}
if (request.MaxValuesRetrieved.HasValue == false)
{
request.MaxValuesRetrieved = int.MaxValue;
}
if (request.StartIndex.HasValue == false)
{
request.StartIndex = -1;
}
GeneralHelper.GenericReturnDelegate <bool> operationDelegate = delegate()
{
if (request.IsTickBased)
{
DataReaderWriter <DataTick> readerWriter = entry.GetDataTickReaderWriter();
List <DataTick> dataTicks;
DataHistoryUpdate update = new DataHistoryUpdate(request.Period, new DataTick[] { });
if (readerWriter.Read(request.StartIndex.Value, request.MaxValuesRetrieved.Value, out dataTicks))
{
update.DataTicksUnsafe.AddRange(dataTicks);
if (DataHistoryUpdateEvent != null)
{
DataHistoryUpdateEvent(this, sessionInfo, update);
}
return(true);
}
}
else
{
DataReaderWriter <DataBar> readerWriter = entry.GetDataBarReaderWriter();
if (readerWriter == null)
{
SystemMonitor.OperationError("Failed to establish file reader writer for entry.");
return(false);
}
List <DataBar> dataBars;
DataHistoryUpdate update = new DataHistoryUpdate(request.Period, new DataBar[] { });
bool readResult = false;
if (request.StartIndex.Value < 0)
{// Instruction is to read the last count items.
readResult = readerWriter.ReadLast(
request.MaxValuesRetrieved.Value, out dataBars);
}
else
{
readResult = readerWriter.Read(request.StartIndex.Value,
request.MaxValuesRetrieved.Value, out dataBars);
}
if (readResult)
{
update.DataBarsUnsafe.AddRange(dataBars);
if (DataHistoryUpdateEvent != null)
{
DataHistoryUpdateEvent(this, sessionInfo, update);
}
return(true);
}
}
return(false);
};
if (waitResult)
{
return(operationDelegate());
}
else
{
GeneralHelper.FireAndForget(operationDelegate);
return(true);
}
}