private void RefreshList()
{
string log;
using (FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
using (StreamReader reader = new StreamReader(fileStream))
{
log = reader.ReadToEnd();
}
var patterns = File.ReadAllText("patterns.txt");
list = logParser.ParseLog(log, patternsParser.GetPatterns(patterns));
lstLog.ItemsSource = Filter(list, txtSearch.Text);
}