private static void WriteData(string content, string fullPath, bool needDateTime = true)
    {
        try
        {
            lock (lockObj)
            {
                if (string.IsNullOrEmpty(fullPath))
                {
                    return;
                }

                if (!Directory.Exists(Path.GetDirectoryName(fullPath)))
                {
                    Directory.CreateDirectory(Path.GetDirectoryName(fullPath));
                }
                using (var sw = new StreamWriter(fullPath, true, Encoding.Default))
                {
                    //StreamWriter sw = File.AppendText(fullPath);
                    sw.WriteLine((needDateTime ? DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss fff ") : "") + content);
                    sw.Close();
                    sw.Dispose();
                }
            }
        }
        catch (Exception e)
        {
            WriteExcept("WriteData Err:" + e + ",content:" + content);
            if (GetHardDiskFreeSpace(Path.GetPathRoot(AppDomain.CurrentDomain.BaseDirectory)) < 1 &&
                !e.Message.Contains("used by"))
            {

                IsDiskSpaceFull = true;
                MessageBox.Show("写入日志异常," + e.Message + ",content:" + content);
            }
        }
    }

有大佬遇到过这个问题吗？