private void TailUpdateEvent(TaileFileInfo taileFileInfo)
{
if (taileFileInfo.Name == File)
{
_evaluate = false;
Updated = true;
int rows = 1;
FileSize = taileFileInfo.Size;
foreach (var item in taileFileInfo.FilesRows)
{
if (rows >= taileFileInfo.FilesRows.Count)
{
if (Dispatcher != null)
{
Dispatcher.BeginInvoke(
new Action(() => AddRow(item, true)));
}
}
else
{
if (Dispatcher != null)
{
Dispatcher.BeginInvoke(
new Action(() => AddRow(item)));
}
}
rows++;
}
}
}
/// <summary>
/// Find tab page by name from tail tabFile
/// and call updatePage
/// </summary>
/// <param name="taileFileInfo"></param>
private void TailUpdateEvent(TaileFileInfo taileFileInfo)
{
var page = tabControl1.TabPages[taileFileInfo.TabName];
if (page.InvokeRequired)
{
page.Invoke(new EventHandler(delegate { page.Update(tabControl1); }));
}
}
public void TailFile(CancellationToken ct)
{
using (StreamReader reader = new StreamReader(new FileStream(_fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)))
{
//start at the end of the file
long lastMaxOffset = reader.BaseStream.Length;
//while (_tailingFile)
while (!ct.IsCancellationRequested)
{
Thread.Sleep(100);
//if the file size has not changed, idle
if (reader.BaseStream.Length == lastMaxOffset)
{
continue;
}
//Create tailfile info object
var tailFileInfo = new TaileFileInfo
{
Name = _fileName,
Size = reader.BaseStream.Length,
TabName = _tabName
};
//seek to the last max offset
reader.BaseStream.Seek(lastMaxOffset, SeekOrigin.Begin);
//read out of the file until the EOF
string line;
while ((line = reader.ReadLine()) != null)
{
tailFileInfo.FilesRows.Add(line);
}
//publish new file rows.
_messageService.Publish(tailFileInfo);
//update the last max offset
lastMaxOffset = reader.BaseStream.Position;
}
reader.Close();
reader.DiscardBufferedData();
reader.Dispose();
Dispose();
}
}
