private void DgvLog_CellValueNeeded(object sender,
DataGridViewCellValueEventArgs e)
{
var logIndex = e.RowIndex;
if (LogEntries.TryGetValue(logIndex, out var logEntry))
{
if (logEntry.Status == LogEntryStatus.Present)
{
e.Value = logEntry.Message;
}
return;
}
e.Value = "";
if (!logToken.HasValue)
{
return;
}
// Find first displayed row that has no log present or requested
var start = logIndex;
for (; start > DgvLog.FirstDisplayedScrollingRowIndex; start--)
{
if (LogEntries.TryGetValue(start - 1, out var _))
{
break;
}
}
// Find last displayed row that has no log present or requested
var end = logIndex;
for (; end < DgvLog.GetLastDisplayedScrollingRowIndex(true); end++)
{
if (LogEntries.TryGetValue(end + 1, out var _))
{
break;
}
}
var count = end - start + 1;
RequestLogEntries(logToken.Value, start, count);
}
private void StatusTimerCallback(object param)
{
try
{
var status = WcfProxy.GetCurrentStatus();
this.InvokeIfRequired(() =>
{
if (logToken != status.LogToken)
{
// Has to be in this order
// Otherwise clearing the DGV causes cell value requests
// in this thread before continuing here.
// Which has a high chance of adding items in the
// LogEntries list, which are subsequently cleared,
// leaving empty cells in the DGV that won't be filled.
DgvLog.RowCount = 0;
LogEntries.Clear();
}
logToken = status.LogToken;
// If we are scrolled down, we auto scroll
var prevRowCount = DgvLog.RowCount;
DgvLog.RowCount = status.LogCount;
if (DgvLog.GetLastDisplayedScrollingRowIndex(false) + 1
>= prevRowCount)
{
DgvLog.FirstDisplayedScrollingRowIndex =
DgvLog.RowCount - 1;
}
UpdateOperation(status.Operation);
DuplicateCount = status.DuplicateCount;
LblDuplicateCount.Text = string.Format(
StatusInfoDuplicateCount,
DuplicateCount);
BtnResolveDuplicates.Enabled = DuplicateCount > 0;
BtnDiscardDuplicates.Enabled = DuplicateCount > 0;
});
}
catch (Exception ex) when(
ex is EndpointNotFoundException ||
ex is CommunicationException ||
ex is TimeoutException)
{
Debug.Print("Status request failed with: " + ex.Message);
this.InvokeIfRequired(() =>
{
BtnResolveDuplicates.Enabled = false;
UpdateOperation(new OperationInfo
{
Message = "Connecting...",
ProgressStyle = ProgressStyle.Marquee,
});
});
}
finally
{
_ = StatusTimer.StartSingle(Settings.StatusRequestInterval);
}
}
