private void ReadLog()
{
var newLogFile = Logging.LogFile;
if (newLogFile != _currentLogFile)
{
_currentOffset = 0;
_currentLogFile = newLogFile;
_currentLogFileName = Logging.LogFileName;
}
try
{
if (!File.Exists(newLogFile))
{
Title = $@"{this.GetWindowStringValue(@"Title")}";
return;
}
using var reader = new StreamReader(new FileStream(newLogFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite));
if (_currentOffset == 0)
{
var maxSize = reader.BaseStream.Length;
if (maxSize > MaxReadSize)
{
reader.BaseStream.Seek(-MaxReadSize, SeekOrigin.End);
reader.ReadLine();
}
}
else
{
reader.BaseStream.Seek(_currentOffset, SeekOrigin.Begin);
}
var txt = reader.ReadToEnd();
if (!string.IsNullOrEmpty(txt))
{
LogTextBox.AppendText(txt);
if (LogTextBox.SelectionStart == 0 || LogTextBox.IsScrolledToEnd())
{
LogTextBox.ScrollToEnd();
}
else
{
LogTextBox.ScrollToLine(LogTextBox.GetLineIndexFromCharacterIndex(LogTextBox.SelectionStart));
}
}
_currentOffset = reader.BaseStream.Position;
}
catch (FileNotFoundException)
{
}
catch (ArgumentNullException)
{
}
Title = $@"{this.GetWindowStringValue(@"Title")} {_currentLogFileName}";
}