Use Request to receive xml data that send by using HttpWebRequest,

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Here are my sending data part of the code:
-----------------------------------
XmlTextWriter myWriter = null;
HttpWebRequest myRequest;

XmlTextReader myXMLReader = null;
XmlDocument myDoc = null;

myDoc = new XmlDocument();
myDoc = Miscellaneous.C reateXMLDoc(); // will return a xml doc

// post xml file
myRequest =
(HttpWebRequest )WebRequest.Cre ate("http://localhost:2772/Default.aspx");

myRequest.Metho d = "POST";
myRequest.Conte ntType = "text/xml";
myRequest.KeepA live = false;
try
{
myWriter = new
XmlTextWriter(m yRequest.GetReq uestStream(),Sy stem.Text.Encod ing.UTF8);
//myDoc =
Miscellaneous.C reateXMLDoc(txt Login.Text,Subm issionInfo.StrP asswd);
myDoc.WriteCont entTo(myWriter) ;
myWriter.Flush( );
myWriter.Close( );
}.............

Here is my receving data code in Default.aspx.cs file
---------------------------------------------------------
// Get input from client
HttpContext con = Context;
HttpRequest httpReq = con.Request;
httpReq.Content Type = "text/xml";
httpReq.Request Type = "GET";

XmlTextReader myXMLReader = new
XmlTextReader(h ttpReq.InputStr eam);

if (httpReq.InputS tream.Length != 0)
{
}

The problem is the length of httpReq.InputSt ream is 0. Can you tell me
what's wrong?

Thank you very much in advance,
Ying