private void Derror(string XmlFile)
        {
            bool flag = false;

            if (File.Exists(XmlFile))
            {
                string[] array = File.ReadAllLines(XmlFile);
                for (int i = 0; i < array.Length; i++)
                {
                    if (array[i].Contains("&"))
                    {
                        string str = array[i].Replace("&", "&");
                        array[i] = array[i] + str;
                        flag = true;
                    }
                }
                if (flag)
                {
                    File.WriteAllLines(XmlFile, array);
                }
            }
            else
            {
                // Could not find the XML file
            }

        }