public static bool HasChild(string QueryString)
        {
            SqlConnection _conn = new SqlConnection(EMSConFunc.ConString());
            int           nHas  = 0;
            SqlCommand    cmd   = new SqlCommand(QueryString, _conn);

            if (_conn.State == ConnectionState.Open)
            {
            }
            else
            {
                cmd.Connection.Open();
            }
            object bIsExist = cmd.ExecuteScalar();

            cmd.Connection.Close();
            nHas = Convert.ToInt32(bIsExist);
            if (nHas > 0)
            {
                return(true);
            }
            else
            {
                return(false);
            }
        }
        public static void ExeNonQuery(string QueryString)
        {
            SqlConnection _conn = new SqlConnection(EMSConFunc.ConString());
            SqlCommand    cmd   = new SqlCommand(QueryString, _conn);

            if (_conn.State == ConnectionState.Open)
            {
            }
            else
            {
                cmd.Connection.Open();
            }
            cmd.ExecuteNonQuery();
            cmd.Dispose();
            cmd.Connection.Close();
        }
        public static int ExeRetInt(string QueryString)
        {
            int           nHas  = 0;
            SqlConnection _conn = new SqlConnection(EMSConFunc.ConString());
            SqlCommand    cmd   = new SqlCommand(QueryString, _conn);

            if (_conn.State == ConnectionState.Open)
            {
            }
            else
            {
                cmd.Connection.Open();
            }
            object bIsExist = cmd.ExecuteScalar();

            cmd.Connection.Close();
            nHas = Convert.ToInt32(bIsExist);
            return(nHas);
        }