How Can I Check Whether A File Is Open Or Not

public static Boolean IsFileLocked(FileInfo file)
        {
            FileStream stream = null;
            try
            {
                stream = file.Open(FileMode.Truncate, FileAccess.Write, FileShare.None);
                //using (StreamReader reader = new StreamReader(File.Open(filePath, FileMode.Open, FileAccess.ReadWrite)))
                //{
                //    return false;
                //}
            }
            catch (IOException)
            {
                return true;
            }
            finally
            {
                if (stream != null)
                    stream.Close();
            }
            return false;
        }