等号数据“导致”BeginGetRequest流失败

下面代码中标记的行（//这是异步调用）。 如果我将此值作为查询传递给我的函数，则不会回调异步回调：

<Verb>get</Verb><ResourceList><CatalogQuery><ItemQueryList><ItemIDList><ID>16-=-cedar-bonsai</ID></ItemIDList><AttributesType>all</AttributesType></ItemQueryList></CatalogQuery>

请注意 xml 的这一部分：

<ID>16-=-cedar-bonsai</ID>

但是，如果我将等号切换到其他任何东西，它可以工作

<Verb>get</Verb><ResourceList><CatalogQuery><ItemQueryList><ItemIDList><ID>16-here-cedar-bonsai</ID></ItemIDList><AttributesType>all</AttributesType></ItemQueryList></CatalogQuery>

真正让我感到困惑的是，查询的内容应该对被调用的回调绝对没有影响。右？

这是代码

//Get get a item attributes Async
        public XElement makeAsyncCall(string query,bool create = false,bool resent = false)
        {
            ManualResetEvent mre = null;
            //The results will be stored here;
            StringBuilder xresults = new StringBuilder() ;
            sem.WaitOne();
            try
            {
                query = query.Replace("&", "&");
                query = query.Replace("#39;", "apos;");
                //If this is not a query that is being sent again append additional info
                if (!resent)
                {
                    query = HEADER_TEXT + query + CLOSER_TEXT;
                }
                //Concatonate a declaration, header information, the query to be performed, and the closing XML tag. Then convert to a Byte array
                Byte[] byteData = UTF8Encoding.UTF8.GetBytes(
                            new XDocument(
                                new XDeclaration("1.0", "utf-8", null),
                                XElement.Parse(query)
                            ).ToString()
                );
                string paddr = POST_ADDRESS_QUERY;
                if (create != false)
                {
                    paddr = POST_ADDRESS_CREATION;
                }
                //Setup the post connection 
                HttpWebRequest httpWReq = WebRequest.Create(paddr) as HttpWebRequest;
                httpWReq.Method = "POST";
                httpWReq.ContentType = "application/x-www-form-urlencoded";
                httpWReq.Proxy = null;
                httpWReq.ContentLength = byteData.Length;
                httpWReq.KeepAlive = true;

                using (mre = new ManualResetEvent(false))
                {

                     //THIS IS THE ASYNC CALL
                     httpWReq.BeginGetRequestStream(new AsyncCallback(getRequestStreamAsync), Tuple.Create<HttpWebRequest, byte[], bool, StringBuilder, ManualResetEvent>(httpWReq, byteData, create, xresults, mre));
                    mre.WaitOne(10000);
                    mre.Close();
                    //Try again if not exited already.
                    if (xresults.Length == 0)
                    {
                        httpWReq.Abort();
                        sem.Release();
                        return makeAsyncCall(query, create, true);
                    }
                    sem.Release();
                    return XElement.Parse(xresults.ToString(), LoadOptions.PreserveWhitespace);
                }
            }
            catch(Exception ex)
            {
                mre.Close();
                sem.Release();
                throw (ex);
            }
        }