public static FileSystemWatcher OnFileChanged(this string filePath, Action onFileChanged)
{
if (filePath.IsBlank())
{
throw Fault.NullRef("filePath");
}
if (!File.Exists(filePath))
{
throw Fault.MissingFile(filePath);
}
var abs = filePath.MakeAbsolute();
var dir = Path.GetDirectoryName(abs);
var nme = Path.GetFileName(abs);
var watchr = new FileSystemWatcher(dir, nme);
watchr.NotifyFilter = NotifyFilters.LastWrite;
watchr.Changed += (s, e) =>
{
try
{
onFileChanged?.Invoke();
}
catch (Exception ex)
{
Alert.Show(ex, "OnFileChanged");
}
};
watchr.EnableRaisingEvents = true;
return(watchr);
}
private void InitializeFileWatcher()
{
if (WatchedFile.IsBlank())
{
throw Fault.NullRef(nameof(WatchedFile));
}
if (!File.Exists(WatchedFile))
{
throw Fault.MissingFile(WatchedFile);
}
var abs = WatchedFile.MakeAbsolute();
var dir = Path.GetDirectoryName(abs);
var nme = Path.GetFileName(abs);
_watchr = new FileSystemWatcher(dir, nme);
_watchr.NotifyFilter = NotifyFilters.LastWrite;
_watchr.Changed += async(s, e) =>
{
if (!_isDelaying)
{
_isDelaying = true;
await Task.Delay(1000);
IsFileChanged = true;
OnFileChanged();
_isDelaying = false;
}
};
_watchr.EnableRaisingEvents = true;
}
public static bool FileContains(this string filePath, string text)
{
if (!File.Exists(filePath))
{
throw Fault.MissingFile(filePath);
}
return(File.ReadLines(filePath).ToList()
.Any(_ => _.Contains(text)));
}
