DbHelperSQL里一个函数的用法？该如何解决

/// <summary>        /// 执行SQL语句，返回影响的记录数        /// </summary>        /// <param name="SQLString">SQL语句</param>        /// <returns>影响的记录数</returns>        public static int ExecuteSql(string SQLString, params SqlParameter[] cmdParms)        {            using (SqlConnection connection = new SqlConnection(connectionString))            {                using (SqlCommand cmd = new SqlCommand())                {                    try                    {                        PrepareCommand(cmd, connection, null, SQLString, cmdParms);                        int rows = cmd.ExecuteNonQuery();                        cmd.Parameters.Clear();                        return rows;                    }                    catch (System.Data.SqlClient.SqlException e)                    {                        throw e;                    }                }            }        }

IDataParameter[] p = new IDataParameter[3];            p[0] = new SqlParameter("@a",SqlDbType.NVarChar,50);            p[1] = new SqlParameter("@b", SqlDbType.Text);            p[2] = new SqlParameter("@c",SqlDbType.Text);            string sql = "insert into report (user_name,content,url)values(@a,@b,@c)";            return DbHelperSQL.ExecuteSql(sql, p);