using System.Runtime.Serialization.Formatters.Soap;
private Hashtable SearchParams()
    {
        try
        {
            Hashtable htSearchParams=new Hashtable();
            FileStream fs = new FileStream("Set the Path", FileMode.Open);
            SoapFormatter formatter = new SoapFormatter();
            htSearchParams = (Hashtable)formatter.Deserialize(fs);
            return htSearchParams;
        }
        catch (Exception ex)
        {
            throw ex;

        }
    }