使用xmlhttp進行post資料到網頁出錯，請大神破解-有解無憂

使用xmlhttp進行post資料到網頁，大部分網頁都可以，但是今天post資料到某網頁時，回傳以下資訊。很多，我是新手，一下子就蒙了，這些都是啥喲？哪位大神能解答下。

<html>
    <head>
        <title>Invalid URI: The URI is empty.</title>
        <style>
         body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;}
         p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px}
         b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px}
         H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red }
         H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon }
         pre {font-family:"Lucida Console";font-size: .9em}
         .marker {font-weight: bold; color: black;text-decoration: none;}
         .version {color: gray;}
         .error {margin-bottom: 10px;}
         .expandable { text-decoration:underline; font-weight:bold; color:navy; cursor:hand; }
        </style>
    </head>

    <body bgcolor="white">

            <span><H1>Server Error in '/' Application.<hr width=100% size=1 color=silver></H1>

            <h2> <i>Invalid URI: The URI is empty.</i> </h2></span>

            <font face="Arial, Helvetica, Geneva, SunSans-Regular, sans-serif ">

            <b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

            <br><br>

            <b> Exception Details: </b>System.UriFormatException: Invalid URI: The URI is empty.<br><br>

            <b>Source Error:</b> <br><br>

            <table width=100% bgcolor="#ffffcc">
               <tr>
                  <td>
                      <code>

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>

                  </td>
               </tr>
            </table>

            <br>

            <b>Stack Trace:</b> <br><br>

            <table width=100% bgcolor="#ffffcc">
               <tr>
                  <td>
                      <code><pre>

[UriFormatException: Invalid URI: The URI is empty.]
   System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind) +7955503
   Core.RequestHelper.get_IsCrossSitePost() +141
   Web.ynffc.ajax.Page_Load(Object sender, EventArgs e) +72
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25
   System.Web.UI.Control.LoadRecursive() +71
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3048
</pre></code>

                  </td>
               </tr>
            </table>

            <br>

            <hr width=100% size=1 color=silver>

            <b>Version Information:</b> Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1

            </font>

    </body>
</html>

uj5u.com熱心網友回復：

附上我的post程式段，很簡單的

'------------------通過post獲取指定資訊-----------------------
Public Function postStr(StrUrl$, strref$, stract$) As String
   Dim XmlHttp
   Set XmlHttp = CreateObject("Microsoft.XMLHTTP")
   XmlHttp.Open "POST", StrUrl, True
   XmlHttp.setRequestHeader "Referer", strref
   XmlHttp.setRequestHeader "CONTENT-TYPE", "application/x-www-form-urlencoded"
   XmlHttp.send (stract)
   starttm = Timer
   While XmlHttp.ReadyState <> 4
      DoEvents
      If Timer - starttm > 5 Then postStr = "": Set XmlHttp = Nothing: Exit Function '判斷超出5秒即超時退出程序
   Wend
   postStr = StrConv(XmlHttp.ResponseBody, vbUnicode)
   Set XmlHttp = Nothing
End Function

uj5u.com熱心網友回復：

說不定是服務器程式的問題

uj5u.com熱心網友回復：

應該不是，我用httpwatch監控，網頁運行沒問題，但我想post獲取資訊時，它給我回傳這些，郁悶呀

uj5u.com熱心網友回復：

問題已經找到了，微軟封鎖了xmlhttp，xmlhttp已經不能設定referer了，所以報錯。我現在改用winhttp就ok了。大家要注意喲。

uj5u.com熱心網友回復：

33762439是你的QQ？

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